Patent Publication Number: US-9408332-B2

Title: System and method for fluid cooling of electronic devices installed in a sealed enclosure

Description:
RELATED APPLICATION 
     This application is a continuation-in-part of U.S. patent application Ser. No. 14/749,615, filed on Jun. 24, 2015 and entitled “APPARATUS AND METHOD FOR FLUID COOLING OF ELECTRONIC DEVICES INSTALLED IN AN ENCLOSURE”, now issued as U.S. Pat. No. 9,258,926, issued on Feb. 9, 2016, which claims priority of U.S. Provisional 62/016,638, filed on Jun. 24, 2014 and entitled “FLUID COOLING OF ELECTRONIC DEVICES INSTALLED IN A SEALED ENCLOSURE”, and U.S. Provisional 62/060,290, filed on Oct. 6, 2014 and entitled “SYSTEM AND METHOD FOR FLUID COOLING OF ELECTRONIC DEVICES INSTALLED IN A SEALED ENCLOSURE”, and claims priority of U.S. Provisional 62/272,751, filed on Dec. 30, 2015 and entitled “SYSTEM AND METHOD FOR FLUID COOLING OF ELECTRONIC DEVICES INSTALLED IN A SEALED ENCLOSURE”, all of which are hereby incorporated by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     This disclosure relates to a system and method for cooling electronic devices, including but not limited to computer systems, by installing the electronic devices in a fluid-tight enclosure, said enclosure constructed with various configurations of heat exchange and pressure control mechanisms. 
     BACKGROUND 
     Electronic devices generate significant amounts of thermal energy during operation. The functional lifetime of electronic devices is significantly diminished by excess heat buildup. Therefore, a number of methods have been presented to remove thermal energy from electronic devices and reject it into an external environment. Since the beginnings of electronic devices, air movement over these devices has been the primary means of heat removal. For example, in the early large-scale computing systems of the 1940s and 1950s, heat dissipation consisted primarily of ventilation apertures in housings, followed by ambient-air fans and blowers which cooled by forced air convection. Even today, refined versions of these early air-based heat dissipation systems are the most common means of electronic device and computer systems cooling. In air-based heat dissipation systems, air within a device enclosure is heated by the electronic device and internal fans expel heated air into the immediate environment around the device. The environment around the device is typically maintained with regards to temperature, humidity, and particulate matter, by using compression-based heat exchange with the outside environment. This process is effective and in common use for non-stop electronic devices such as computer servers. Although this process is effective, it is complex process with a number of systems that must be constantly maintained to produce the desired environment thus having high construction and operational costs. For example, air-based cooling relies on a) the proper operation of fans to circulate air inside the device enclosure, in the server room, and in outside condensers, b) a very clean environment free of most dust and particulates, c) proper humidity control, and d) costly “white space” in the server room to allow human access to electronic devices for repair and maintenance. Air based cooling faces significant risks from a) internal fan and cooling failures, b) server room cooling failures and inconsistencies, c) fire control systems, d) unauthorized human access, e) maintenance failures and mistakes, and f) natural disasters. Taken together, these factors typically require specialized and costly installation space for electronic devices such as computer servers. Further, air-based cooling of electronic systems can double the total amount of electrical energy required to operate these systems, resulting in a costly and wasteful means of operating such systems. 
     Noting the inefficiencies and problems with air-based heat dissipation, designs begin to arise in the 1960s and 1970s that took advantage of the much higher thermal conductivity of liquids, which typically conduct heat ten to one hundred times more rapidly than gases. Liquid vapor cooling of individual semiconductors and other solid state components was disclosed by Davis in U.S. Pat. No. 3,270,250, and in U.S. Pat. No. 3,524,497, Chu et. al. disclose a double-walled container for component-level electronics, with liquid flow in the space between the walls. The predominance of such designs focused on component level cooling of larger systems. 
     As individual CPU processing speed and power increased during the 1980s, inventors continued to disclose methods for additional cooling capability in electronic assemblies. Many of these disclosures related to component level cooling, but a few began to focus on system level liquid cooling. Cray, in U.S. Pat. No. 4,590,538 (1986), discloses a means of immersing an entire electronic assembly in coolant liquid, and circulating the liquid out of the assembly container for the purpose of thermal energy removal. Numerous other methods of liquid cooling of components and component assemblies continued to be disclosed throughout the 1990s. In the late 2000s, the liquid cooling designs from the 1980s and 1990s were applied to individual servers and computing systems. These innovations were followed by modifications and improvements which incorporated liquid cooling elements into the structural design of computing systems rather than individual modules or computing units. For example, in U.S. Pat. No. 8,351,206, Campbell et. al. disclose a liquid-cooled electronics rack with immersion-cooled electronics and a vertically mounted vapor condensation unit attached to or adjacent to the electronics rack. 
     Olsen, et. al. describe in U.S. Pat. No. 8,416,572 a design for multiple electronic devices connected in an array, thermally coupled to a flowing liquid. In U.S. Pat. No. 8,467,189 and related following patents Attlesey discloses designs for an array of rack-mounted plurality of cases for electronics systems; each case contains a dielectric fluid for heat conduction, and the rack system incorporates a manifold for liquid circulation through the plurality of cases, with a pump and heat exchanger incorporated into the fluid circulation loop. Best et. al. disclose, in U. S. Patent Application 2011/0132579 a design in which a series of horizontally oriented computer server racks are submerged in a liquid tank containing a dielectric cooling fluid that is circulated from the tank to a remote heat exchanger and back into the tank. 
     One of the significant improvements of liquid cooling over air cooling is the ability to transport heat from the electronic device or system directly to the heat rejection environment without significantly affecting the human inhabited space in the server room thus dramatically increasing the heat transport efficiency while reducing the number of cooling processes and preventing excess heat diffusion. However, these processes have not seen widespread adoption for one or more possible reasons. Component level liquid cooling designs tend to introduce significant complexity to operations and maintenance while increasing server room risks to coolant leaks and failures. System level liquid cooling designs reduce the overall number of cooling interconnects, but have similar problems. To further complicate the liquid cooling server room installations, liquid cooled systems require new server room procedures, operations, and training and expose owner and operators to additional liabilities from liquid damage. And notably, production electronic devices and servers are rarely available in liquid cooling configurations. Succinctly, the cost savings associated with current liquid cooling designs are overshadowed by the increased costs of purchasing, constructing, and operating liquid cooled servers and solutions. 
     Significantly, it is the widespread usage of virtualized computing resources that is allowing greater innovation and deployment of fluid cooled electronic devices and servers. Virtualization of data resources allows data to be stored on many redundant devices. Virtualization of compute resources allows the functional compute unit of a “server” to become a software unit that can be moved from one physical computer to another. Individual electronic devices and servers may fail over time, but the virtualized nature of software based compute and storage units mean that an individual failures only slightly decreases the overall capability of a collection of servers but in no way compromises the data processing, storage, and communication functions as a whole. Therefore, since it is no longer necessary to maintain or repair a specific physical server in order to maintain a given operation, fluid cooling of electronic devices in a sealed enclosure is enabling cost reductions, operational efficiencies, increased security, and extended longevity of electronic devices and servers. 
     The innovations as disclosed herein overcome problems inherent to both traditional air-cooled and liquid-cooled electronic devices and systems. Significant benefits comprise a) high efficiency cooling and heat exchange reducing overall energy usage by up to 50%, b) no maintenance required, c) devices and systems can be installed in almost any environment such as a traditional data center, high rise office, industrial building, offshore installation, underground installation, and ambient air data center, d) increasing server density up to 3× the current high-density server deployments thus reducing the amount of server room space required, e) improved physical security, f) improved EMI/RFI security, g) decreased labor costs, h) more protection against disasters such as fire, hurricane, and earthquake, i) fewer maintenance failures and mistakes, j) tamper-resistant to unauthorized human access, k) reduced or eliminated damage due to fire control systems, l) nearly silent in operation, m) internal components have cooler average temperature that will increase the life of the system, and n) impervious to environmental factors such as dust and humidity. 
     These and other benefits disclosed herein combine together to create entirely new classes of solutions. For example, innovation in the fluid cooling of electronic devices as disclosed herein, and innovations that allow for a broader range of installation environments are disclosed by Smith in U. S. Patent Appl. No. 2015/0000319 (January 2015) are challenging the assumptions and designs of data centers and server rooms. 
     Unless specifically stated as such, the preceding is not admitted to be prior art and no statement appearing in this section should be interpreted as a disclaimer of any features or improvements listed. 
     BRIEF DESCRIPTION OF THE INVENTION 
     Various embodiments of a system and method for fluid cooling of electronic devices installed in sealed enclosures are disclosed herein. 
     At least one embodiment described herein provides a cooling system for electronic devices installed in a sealed enclosure. Such embodiments are optimized for effective and efficient direct and indirect transfer of thermal energy away from heat-generating electronics into the surrounding environment. Designs embody enclosing structures comprised of walls that enclose an interior sealed space containing heat generating components and a dielectric thermally conductive fluid (“primary dielectric thermally conductive fluid”). The enclosure may be comprised of single wall construction that enclose an innermost volume or may be comprised of inner, outer, and optional intermediate walls. Secondary thermally conductive fluids may be circulated within the enclosure walls and/or through an innermost heat exchange mechanism to an external local or remote heat exchange loop. The innermost volume of the enclosure may optionally contain a heat exchange mechanism though which a secondary thermally conductive fluid is circulated to an external local or remote heat exchange loop. The sealed enclosure may be located in a variety of environments comprising raised or slab floor datacenters, commercial buildings, residential buildings, outdoor locations, subsurface structures, and direct subsurface installation. The design leads to significant reductions in capital, infrastructure, power, cooling, maintenance, and operational costs associated with deploying computing hardware. In addition, the design provides for a high degree of physical, electrical, and magnetic security for the enclosed electronics. 
     Electronic devices may be disposed within the interior of the sealed enclosure in a variety of configurations to facilitate thermal transfer and best practice process efficiency. The enclosed electronic devices dissipate internally generated heat into the innermost volume, the primary dielectric thermally conductive fluid, optional innermost heat exchanger, and the innermost thermally conductive walls of the sealed enclosure. The walls of the enclosure may be thermally connected by mechanical connection or other means. Cooling fins may be affixed to any wall surfaces to aid in heat transport and dissipation. Any wall surfaces may have surface features of various dimensionality to aid in heat transport and dissipation. 
     In embodiments with a plurality of enclosing walls, the sealed enclosure comprises a unit with an innermost volume formed by a plurality of walls which form one or more enclosing volumes within said walls. The innermost volume contains a single phase or multi-phase primary dielectric thermally conductive fluid in which electronic devices to be cooled are immersed and/or surrounded as well as an optional heat exchange mechanism through which is circulated a single phase or multi-phase secondary thermally conductive fluid (“secondary thermally conductive fluid”). Optionally, located between any two surfaces of the enclosure walls are structures that comprise one or more channels that contain a single phase or multi-phase secondary thermally conductive fluid. Innermost and intermediate walls are thermally conductive and are optimized by composition and construction to provide for optimal heat transfer away from the innermost volume. In embodiments in which the enclosure is comprised of single wall construction that enclose an innermost volume, the innermost volume contains a single phase or multi-phase primary dielectric thermally conductive fluid in which electronic devices to be cooled are immersed and/or surrounded as well as an optional heat exchange mechanism through which is circulated a single phase or multi-phase secondary thermally conductive fluid. 
     Some embodiments may use multiple enclosed and segregated secondary thermally conductive fluids by using intermediate walls or heat exchangers in the innermost volume for the purpose of optimizing the thermal requirements. Secondary thermally conductive fluid(s) may be presented to one or more heat exchange mechanisms for the purpose of removing heat from the fluid(s). Heat exchange may be accomplished by a variety of means to one or more external heat sink systems that may be of various types including ventilation, compression, evaporation, absorption, or geothermal systems. The heat exchange system may reject heat directly into the immediate environment of the sealed enclosure via passive or forced circulation, or fluid may be circulated away from the sealed enclosure, cooled in a remote location, and then re-circulated back to the sealed enclosure at a lower temperature. The outermost exterior walls may be thermally conductive or thermally insulating. Various and diverse thermally conductive fluids may be used to support the cooling of electronic devices within a sealed enclosure at a particular thermodynamic rate. For example, an embodiment could use a multi-phase thermally conductive fluid that allows rapid dissipation of the heat from high temperature electronic devices such as a computer with CPUs while other embodiments could use a single phase thermally conductive fluid for general heat transfer of lower powered electronic devices. 
     The sealed enclosure has fluid-tight entrances from the outermost surface to the innermost volume for power, networking, and other control and monitoring signals and functions. In addition, the sealed enclosure may optionally comprise fluid-tight entrances from the outermost surface to the innermost volume for gaseous fluid exchange with the innermost volume for the purpose of pressure equalization, fluid maintenance, and/or supplying motive force to kinetic process components located in said innermost volume. 
     The sealed enclosure may contain internal pressure balancing mechanisms for the purpose of maintaining suitable pressures of gaseous fluids in a volume of the sealed container. To enhance the security of the electronic devices in the sealed enclosure, a functional “poison pill” system may be implemented to provide an electrical, magnetic, chemical, and/or mechanical means of rendering the electronic devices and any content stored on those devices to be permanently unusable and unreadable. 
     Multiple configuration options are described to optimize installation of sealed enclosures into a variety of environments, such as homes, offices, businesses, datacenters, and specialty computing installations. The installation can be in any orientation and can be located in surface or sub-surface environments. Sealed enclosures be installed as standalone units or may be stacked or grouped together to form a single structural unit of any dimensionality in a high-density configuration. 
     In general, the sealed enclosure described contains no user serviceable electronic devices. The devices are typically used until they are no longer useful at which point they are completely replaced. Typically these units are deployed in multiples and utilize system designs that allow for redundant failover of non-functioning devices. 
     These and other aspects of the disclosed subject matter, as well as additional novel features, will be apparent from the description provided herein. The intent of this summary is not to be a comprehensive description of the claimed subject matter, but rather to provide a short overview of some of the subject matter&#39;s functionality. Other systems, methods, features and advantages here provided will become apparent to one with skill in the art upon examination of the following FIGS. and detailed description. It is intended that all such additional systems, methods, features and advantages that are included within this description, be within the scope of the claims. 
    
    
     
       BRIEF DESCRIPTION OF FIGURES 
       The features characteristic of the invention are set forth in the claims. However, the invention itself and further objectives and advantages thereof, will best be understood by reference to the following detailed description when read in conjunction with the accompanying drawings in which the left-most significant digit(s) in the reference numerals denote(s) the first figure in which the respective reference numerals appear, wherein: 
         FIG. 1  shows a conceptual view of a sealed enclosure design comprising outermost and innermost enclosure walls that enclose electronic devices, a primary dielectric thermally conductive fluid, and optional heat exchange mechanism in the innermost volume and a secondary thermally conductive fluid within the walls according to an embodiment of the disclosed subject matter. 
         FIG. 2  shows a conceptual view of a sealed enclosure design comprising outermost, intermediate, and innermost enclosure walls that enclose electronic devices, a primary dielectric thermally conductive fluid, and optional heat exchange mechanism in the innermost volume and one or more secondary thermally conductive fluids and optional heat exchange mechanism within the walls according to an embodiment of the disclosed subject matter. 
         FIG. 3  shows a conceptual view of a single port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 4  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 5  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 6  shows a conceptual view of an internal pressure balancing mechanism with optional dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 7  shows a conceptual view of an internal pressure balancing mechanism with dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 8  shows a conceptual view of a dual port pressure balancing mechanism and/or an internal pressure balancing mechanism used to relieve positive and negative pressures in the intermediate wall of a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 9  shows a conceptual view of a sealed enclosure design comprising enclosure walls that enclose electronic devices, a primary dielectric thermally conductive fluid, and an optional heat exchange mechanism in the innermost volume that contains a secondary thermally conductive fluid according to an embodiment of the disclosed subject matter. 
         FIG. 10  shows a conceptual view of a single port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 11  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 12  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 13  shows a conceptual view of an internal pressure balancing mechanism with optional dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 14  shows a conceptual view of an internal pressure balancing mechanism with dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms according to an embodiment of the disclosed subject matter. 
         FIG. 15  shows a conceptual view of channels to direct the flow of primary dielectric thermally conductive fluid within a sealed enclosure according to an embodiment of the disclosed subject matter. 
         FIG. 16  shows a conceptual view of channels to direct the flow of primary dielectric thermally conductive fluid within a sealed enclosure according to an embodiment of the disclosed subject matter. 
         FIG. 17  shows a conceptual view of structures for the volumetric displacement of primary dielectric thermally conductive fluid within a sealed enclosure according to an embodiment of the disclosed subject matter. 
         FIG. 18  shows a conceptual view of mechanisms that provide a means of rendering a portion of the electronic devices with a sealed enclosure and any content stored on those devices to be permanently unusable and unreadable according to an embodiment of the disclosed subject matter. 
     
    
    
     DETAILED DESCRIPTION 
     Although described with reference to certain embodiments, those with skill in the art will recognize that the disclosed embodiments have relevance to a wide variety of areas in addition to those specific examples described below. Further, elements from one or more embodiments may be used in other embodiments and elements may be removed from an embodiment and remain within the scope of this disclosure. 
     All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein; provided, however, to the extent there exists a conflict between this disclosure and a document incorporated by reference, this disclosure shall control. 
     As referenced herein, the terms “sealed enclosure” and “containment vessel” are used interchangeably. 
     As referenced herein, the terms “electronic device”, “electronic devices”, “computer”, “computer systems”, “computer cluster”, “physical computer”, “computer server”, and “server” are used interchangeably, and unless otherwise specified comprise any electronic components that are configured to function as one or more independent electronic systems. 
     As referenced herein, a single phase thermally conductive fluid is defined as a liquid or a gas that remains in a single phase, either liquid or gas, across the entire range of operational temperatures and pressures of the electronic devices and/or systems disposed within the sealed enclosure. 
     As referenced herein, a multi-phase thermally conductive fluid is defined as a fluid that changes phase from a liquid to a gas at a temperature and pressure within the range of operational temperatures and pressures of the electronic devices and/or systems disposed within the sealed enclosure. 
       FIG. 1  shows a conceptual view of a sealed enclosure design comprising innermost enclosure wall  101  and outermost enclosure wall  103  that enclose electronic devices  104  and a primary dielectric thermally conductive fluid  106  in the innermost volume  150  and a secondary thermally conductive fluid  120  within the volume between the innermost enclosure wall  101  and outermost enclosure wall  103 . The innermost volume  150  contains a single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. In an embodiment that comprises a single phase primary dielectric thermally conductive fluid  106  in the gaseous phase, said fluid will fill the entirety of innermost volume  150 . In an embodiment that comprises a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid may fill the entirety of innermost volume  150  or may fill less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 . In an embodiment that comprises a multi-phase primary dielectric thermally conductive fluid  106 , said fluid may fill the entirety of innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     Embodiments of the disclosed sealed enclosure may be configured with single phase or multi-phase thermally conductive fluids. A single phase thermally conductive fluid will transfer heat using the principles of convection and conduction. A multi-phase thermally conductive fluid will transfer heat using the principles of convection, conduction, and phase change. As the multi-phase thermally conductive fluid in the liquid phase absorbs heat, a portion of said fluid is converted to the gaseous phase. Conversely, as the multi-phase thermally conductive fluid in the gaseous phase gives up heat by various heat exchange processes, a portion of said multi-phase thermally conductive fluid in the gaseous phase condenses back into multi-phase thermally conductive fluid in the liquid phase. If the amount of fluid in the gaseous phase  108  exceeds the volume of space internal to the sealed enclosure that is unoccupied by the multi-phase thermally conductive fluid in the liquid phase  106 , said fluid in the gaseous phase  108  will exert a positive pressure inside the innermost volume  150  of the sealed enclosure. Conversely, if the amount of fluid in the gaseous phase  108  is less than the volume of space internal to the sealed enclosure that is unoccupied by the multi-phase thermally conductive fluid in the liquid phase  106 , said fluid in the gaseous phase  108  will exert a negative pressure inside the innermost volume  150  of the sealed enclosure. In addition, some amount of multi-phase thermally conductive fluid in the gaseous phase  108  and optional other distinct and suitable compressible gaseous fluid may exist in a space of the sealed enclosure for various purposes comprising cushioning positive and negative pressures in the sealed enclosure, maintaining a headspace in a specified range of pressure as temperature varies, displacing thermally conductive fluid to allow weight adjustments to the overall sealed enclosure, and/or allowing accumulation of gaseous fluid used to drive internal kinetic processes or gaseous based mixing functionality. A single phase thermally conductive fluid may either completely or partially fill a space of the sealed enclosure and any space in the sealed enclosure that is not filled by said single phase thermally conductive fluid may be filled with a distinct and suitable compressible gaseous fluid for various purposes comprising cushioning positive and negative pressures in the sealed enclosure, maintaining a headspace in a specified range of pressure as temperature varies, displacing thermally conductive fluid to allow weight adjustments to the overall sealed enclosure, and/or allowing accumulation of gaseous fluid used to drive internal kinetic processes or gaseous based mixing functionality. 
     The walls of the sealed enclosure are constructed with innermost enclosure wall  101  and outermost enclosure wall  103  and connected to form channels around the innermost enclosure walls  101  such that a secondary single phase or multi-phase thermally conductive fluid  120  may be circulated within the volume contained between said enclosure walls to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . In an another embodiment, the channels that are formed around the innermost enclosure walls  101  may be constructed of conduit or piping that is thermally connected to the innermost wall  101  in a path of optimal geometry such that a) a secondary single phase or multi-phase thermally conductive fluid  120  may be circulated within the conduit to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 , and b) said conduit may be disposed between the innermost enclosure wall  101  and outermost enclosure wall  103  or said conduit is considered to be the outermost enclosure wall  103 . 
     The secondary single phase or multi-phase thermally conductive fluid  120  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. In an embodiment that comprises a secondary single phase thermally conductive fluid  120  in the gaseous phase or the liquid phase, said fluid may fill the entirety of the space between the innermost enclosure wall  101  and outermost enclosure wall  103 . In an embodiment that comprises a secondary multi-phase thermally conductive fluid  120 , said fluid may partially or completely fill the entirety of the space between the innermost enclosure wall  101  and outermost enclosure wall  103  with portions of said fluid existing in the liquid phase and portions of said fluid existing in the gaseous phase in varying proportions relative to the temperature, pressure, and composition of said secondary multi-phase thermally conductive fluid  120 . 
     Electronic devices  104  may be disposed within the innermost volume  150  of the sealed enclosure in a variety of configurations to facilitate thermal transfer and best practice process efficiency. The enclosed electronic devices  104  dissipate internally generated heat into the innermost volume  150 , the primary dielectric thermally conductive fluid  106 , and the innermost thermally conductive walls  101  of the sealed enclosure. Heat is transported from the innermost enclosure wall  101  of the sealed enclosure to one or more secondary thermally conductive fluids  120  within the walls  101 ,  103  of the enclosure. The secondary thermally conductive fluid  120  is circulated between the walls  101 ,  103  where heat is transferred to the secondary thermally conductive fluid  120  and the outermost enclosure wall  103 . The secondary thermally conductive fluid  120  is circulated away from the sealed enclosure via a fluid-tight piping connection  132 , is presented to one or more heat exchanger assemblies  130  for the purpose of removing heat from the fluid, and returned to the sealed enclosure via a fluid-tight piping connection  134 . The secondary thermally conductive fluid  120 : a) is circulated within the walls  101 ,  103  of the sealed enclosure where internal heat is absorbed; b) is removed from within the walls  101 ,  103  of the sealed enclosure and circulated through an adjacent heat exchange assembly  130  where a portion of the heat is removed from the thermally conductive fluid  120 ; and c) is returned to within the walls  101 ,  103  of the sealed enclosure. The secondary thermally conductive fluid  120  is circulated in such a fashion as to provide appropriate heat removal from the sealed enclosure. Heat exchange may be accomplished by a variety of means to one or more external heat sink systems  130  that may be of various types including ventilation, compression, evaporation, and geothermal systems. The heat exchange system  130  may reject heat directly into the immediate environment via passive or forced circulation, or the fluid may be circulated away from the sealed enclosure, cooled in a remote location, and then re-circulated back to the sealed enclosure at a lower temperature. 
     The innermost enclosure wall  101  is thermally conductive and is optimized by composition and construction to provide for optimal heat transfer away from the innermost volume  150 . The outermost enclosure wall  103  may thermally conductive or thermally insulating. Portions of the enclosure walls  103  may be optionally bonded to additional materials that facilitate enhanced thermal conduction or thermal insulation of the enclosure walls  103 . The walls  101 ,  103  of the enclosure may be thermally connected by mechanical connection or other means. Cooling fins may be affixed to the wall surfaces  101 ,  103  to aid in heat transport and dissipation. Wall surfaces  101 ,  103  may have surface features of various dimensionality to aid in heat transport and dissipation. The sealed enclosure has fluid-tight entrances  110  from the outermost surface to the innermost volume  150  for power, networking, and other control and monitoring signals and functions which are appropriately connected to one or more electronic or other functional devices disposed in the innermost volume  150  of the sealed enclosure. 
     The sealed enclosure may optionally comprise heat exchange, control, pressure balancing, fluid maintenance, and/or fluid circulation functionality as described in  FIGS. 3, 4, 5, 6, 7 . Embodiment variations and details described herein apply equally to sealed enclosures with or without an interior  108  fluid head space. The sealed enclosure may optionally comprise one or more channels disposed in the innermost volume  150  as described in  FIGS. 15, 16 . The sealed enclosure may optionally comprise one or more spacers disposed in the innermost volume  150  of the sealed enclosure as described in  FIG. 17 . The sealed enclosure may optionally comprise one or more mechanisms in the innermost volume  150  to render the electronic devices and any content stored on those devices to be permanently unusable and unreadable as described in  FIG. 18 . 
     The sealed enclosure may be located either adjacent to or remote from any heat exchange assemblies  130  and/or pressure balancing systems and appropriate fluid transport channels between said locations are selected based optimal fluid flow and thermodynamic designs for the selected fluids. Further, any heat exchange assemblies  130  and/or pressure balancing systems may perform their indicated functions for one or more sealed enclosures. Sealed enclosures can be installed in any orientation, placed as standalone units or stacked or grouped together to form a single structural unit of any dimensionality in a high-density configuration. 
       FIG. 2  shows a conceptual view of a sealed enclosure design comprising innermost enclosure wall  101 , intermediate enclosure wall  202 , and outermost enclosure wall  103  that enclose electronic devices  104  and a primary dielectric thermally conductive fluid  106  in the innermost volume  150 , a secondary thermally conductive fluid  120  within the volume between the intermediate enclosure wall  202  and outermost enclosure wall  103 , and one or more secondary intermediate thermally conductive fluids  222  within the volume between the innermost enclosure wall  101  and intermediate enclosure wall  202 . This embodiment is illustrated with a single intermediate enclosure wall  202  and secondary intermediate thermally conductive fluid  222 , but other embodiments can contain multiple intermediate walls and fluids. The innermost volume  150  contains a single phase or multi-phase dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. In an embodiment that comprises a single phase primary dielectric thermally conductive fluid  106  in the gaseous phase, said fluid will fill the entirety of innermost volume  150 . In an embodiment that comprises a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid may fill the entirety of innermost volume  150  or may fill less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 . In an embodiment that comprises a multi-phase primary dielectric thermally conductive fluid  106 , said fluid may fill the entirety of innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     Embodiments of the disclosed sealed enclosure may be configured with single phase or multi-phase thermally conductive fluids. A single phase thermally conductive fluid will transfer heat using the principles of convection and conduction. A multi-phase thermally conductive fluid will transfer heat using the principles of convection, conduction, and phase change. As the multi-phase thermally conductive fluid in the liquid phase absorbs heat, a portion of said fluid is converted to the gaseous phase. Conversely, as the multi-phase thermally conductive fluid in the gaseous phase gives up heat by various heat exchange processes, a portion of said multi-phase thermally conductive fluid in the gaseous phase condenses back into multi-phase thermally conductive fluid in the liquid phase. If the amount of fluid in the gaseous phase  108  exceeds the volume of space internal to the sealed enclosure that is unoccupied by the multi-phase thermally conductive fluid in the liquid phase  106 , said fluid in the gaseous phase  108  will exert a positive pressure inside the innermost volume  150  of the sealed enclosure. Conversely, if the amount of fluid in the gaseous phase  108  is less than the volume of space internal to the sealed enclosure that is unoccupied by the multi-phase thermally conductive fluid in the liquid phase  106 , said fluid in the gaseous phase  108  will exert a negative pressure inside the innermost volume  150  of the sealed enclosure. In addition, some amount of multi-phase thermally conductive fluid in the gaseous phase  108  and optional other distinct and suitable compressible gaseous fluid may exist in a space of the sealed enclosure for various purposes comprising cushioning positive and negative pressures in the sealed enclosure, maintaining a headspace in a specified range of pressure as temperature varies, displacing thermally conductive fluid to allow weight adjustments to the overall sealed enclosure, and/or allowing accumulation of gaseous fluid used to drive internal kinetic processes or gaseous based mixing functionality. A single phase thermally conductive fluid may either completely or partially fill a space of the sealed enclosure and any space in the sealed enclosure that is not filled by said single phase thermally conductive fluid may be filled with a distinct and suitable compressible gaseous fluid for various purposes comprising cushioning positive and negative pressures in the sealed enclosure, maintaining a headspace in a specified range of pressure as temperature varies, displacing thermally conductive fluid to allow weight adjustments to the overall sealed enclosure, and/or allowing accumulation of gaseous fluid used to drive internal kinetic processes or gaseous based mixing functionality. 
     In one embodiment, the walls of the sealed enclosure are constructed with innermost enclosure wall  101 , intermediate enclosure wall  202 , and outermost enclosure wall  103  and connected to form channels around the innermost enclosure walls  101  such that additional and distinct thermally conductive fluids  222 ,  120  may be circulated within the volume contained between said enclosure walls to an external local or remote heat exchanger assembly  130 ,  240  via connecting lines  132 ,  134 ,  242 ,  244 . In another embodiment, remote heat exchanger assembly  240  is optionally replaced by an embodiment that is comprised of pressure balancing, fluid maintenance, and/or fluid circulation functionality as described in  FIG. 8 . In an another embodiment, the channels that are formed around the innermost enclosure walls  101  may be constructed of conduit or piping that is thermally connected to the innermost wall  101  in a path of optimal geometry such that a) a secondary single phase or multi-phase thermally conductive fluid  222  may be circulated within the conduit to an external local or remote heat exchanger assembly  240  via connecting lines  242 ,  244 , and b) said conduit may be disposed between the innermost enclosure wall  101  and intermediate enclosure wall  202  or said conduit is considered to be the intermediate enclosure wall  202 . In an another embodiment, the channels that are formed around the intermediate enclosure wall  202  may be constructed of conduit or piping that is thermally connected to the intermediate enclosure wall  202  in a path of optimal geometry such that a) a secondary single phase or multi-phase thermally conductive fluid  120  may be circulated within the conduit to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 , and b) said conduit may be disposed between the intermediate enclosure wall  202  and outermost enclosure wall  103  or said conduit is considered to be the outermost enclosure wall  103 . 
     The secondary intermediate single phase or multi-phase thermally conductive fluid  222  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. In an embodiment that comprises a secondary intermediate single phase thermally conductive fluid  222  in the gaseous phase, said fluid will fill the entirety of the space between the innermost enclosure wall  101  and intermediate enclosure wall  202 . In an embodiment that comprises a secondary intermediate single phase thermally conductive fluid  222  in the liquid phase, said fluid may fill the entirety of the space between the innermost enclosure wall  101  and the intermediate enclosure wall  202  or may fill less than the entirety of the space between the innermost enclosure wall  101  and intermediate enclosure wall  202  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  224 . In an embodiment that comprises a secondary intermediate multi-phase thermally conductive fluid  222 , said fluid may fill the entirety of the space between the innermost enclosure wall  101  and intermediate enclosure wall  202  with portions of said fluid existing in the liquid phase  222  and portions of said fluid existing in the gaseous phase  224  in varying proportions relative to the temperature, pressure, and composition of said secondary intermediate multi-phase thermally conductive fluid  222 . The secondary single phase or multi-phase thermally conductive fluid  120  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. In an embodiment that comprises a secondary single phase thermally conductive fluid  120  in the gaseous phase or the liquid phase, said fluid may fill the entirety of the space between the intermediate enclosure wall  202  and outermost enclosure wall  103 . In an embodiment that comprises a secondary multi-phase thermally conductive fluid  120 , said fluid may fill the entirety of the space between the intermediate enclosure wall  202  and outermost enclosure wall  103  with portions of said fluid existing in the liquid phase and portions of said fluid existing in the gaseous phase in varying proportions relative to the temperature, pressure, and composition of said secondary multi-phase thermally conductive fluid  120 . 
     Electronic devices  104  may be disposed within the innermost volume  150  of the sealed enclosure in a variety of configurations to facilitate thermal transfer and best practice process efficiency. The enclosed electronic devices  104  dissipate internally generated heat into the innermost volume  150 , the primary dielectric thermally conductive fluid  106 , and the innermost thermally conductive walls  101  of the sealed enclosure. Heat is transported from the innermost enclosure wall  101  of the sealed enclosure to a secondary intermediate thermally conductive fluid  222  within the walls  101 ,  202  of the enclosure. The secondary intermediate thermally conductive fluid  222  may optionally be circulated between the walls  101 ,  202  where heat is transferred to secondary intermediate thermally conductive fluids  222  and the intermediate enclosure wall  202 . The secondary intermediate thermally conductive fluid  222  may optionally be circulated away from the sealed enclosure via a fluid-tight piping connection  242 , is presented to one or more heat exchange assemblies  240  for the purpose of removing heat from the fluid, and returned to the sealed enclosure via a fluid-tight piping connection  244 . Heat is transported from the intermediate enclosure wall  202  of the sealed enclosure to the secondary thermally conductive fluid  120  within the walls  202 ,  103  of the enclosure. The secondary thermally conductive fluid  120  is circulated between the walls  202 ,  103  where heat is transferred to the secondary thermally conductive fluid  120  and the outermost enclosure wall  103 . The secondary thermally conductive fluid  120  is circulated away from the sealed enclosure via a fluid-tight piping connection  132 , is presented to one or more heat exchange assemblies  130  for the purpose of removing heat from the fluid, and returned to the sealed enclosure via a fluid-tight piping connection  134 . The secondary thermally conductive fluid  120 : a) is circulated within the walls  103 ,  202  of the sealed enclosure where internal heat is absorbed; b) is removed from within the walls  103 ,  202  of the sealed enclosure and circulated through an adjacent heat exchange assembly  130  where a portion of the heat is removed from the thermally conductive fluid  120 ; and c) is returned to within the walls  103 ,  202  of the sealed enclosure. The secondary thermally conductive fluid  120  is circulated in such a fashion as to provide appropriate heat removal from the sealed enclosure. In the case of a sealed enclosure with one or more intermediate enclosure walls  202 , each secondary intermediate thermally conductive fluid  222  may optionally be circulated from the sealed enclosure to an associated intermediate heat exchanger assembly  240 . Further, if a sealed enclosure embodiment comprises both a secondary thermally conductive fluid  120  and one or more secondary intermediate thermally conductive fluids  222 , then at least one of the said thermally conductive fluids is removed from the sealed enclosure, circulated through a heat exchanger assembly, and returned to the sealed enclosure. Heat exchange may be accomplished by a variety of means to one or more external heat sink systems  130 ,  240  that may be of various types including ventilation, compression, evaporation, absorption, and geothermal systems. The heat exchange system  130 ,  240  may reject heat directly into the immediate environment of the sealed enclosure via passive or forced circulation, or the fluid may be circulated away from the sealed enclosure, cooled in a remote location, and then re-circulated back to the sealed enclosure at a lower temperature. 
     The innermost enclosure wall  101  and intermediate enclosure wall  202  are thermally conductive and are optimized by composition and construction to provide for optimal heat transfer away from the innermost volume  150 . The outermost enclosure wall  103  may thermally conductive or thermally insulating. Portions of the enclosure walls  103  may be optionally bonded to additional materials that facilitate enhanced thermal conduction or thermal insulation of the enclosure walls  103 . The walls  101 ,  202 ,  103  of the enclosure may be thermally connected by mechanical connection or other means. Cooling fins may be affixed to the wall surfaces  101 ,  202 ,  103  to aid in heat transport and dissipation. Wall surfaces  101 ,  102 ,  103  may have surface features of various dimensionality to aid in heat transport and dissipation. The sealed enclosure has fluid-tight entrances  110  from the outermost surface to the innermost volume  150  for power, networking, and other control and monitoring signals and functions which are appropriately connected to one or more electronic or other functional devices disposed in the innermost volume  150  of the sealed enclosure. 
     The multi-wall sealed enclosure described herein may optionally comprise heat exchange, control, pressure balancing, fluid maintenance, and/or fluid circulation functionality as described in  FIGS. 3, 4, 5, 6, 7  in which the innermost enclosure wall  101  and outermost enclosure wall  103  describe optional functionality without reference to the intermediate enclosure wall  202 . Further, the multi-wall sealed enclosure described herein may optionally comprise heat exchange, control, pressure balancing, fluid maintenance, and/or fluid circulation functionality as described in  FIG. 8 . Embodiment variations and details described herein apply equally to sealed enclosures with or without intermediate enclosure walls  202  and secondary intermediate thermally conductive fluids  222 , and with or without an interior  108 ,  224  fluid head space. The sealed enclosure may optionally comprise one or more channels disposed in the innermost volume  150  as described in  FIGS. 15, 16 . The sealed enclosure may optionally comprise one or more spacers disposed in the innermost volume  150  of the sealed enclosure as described in  FIG. 17 . The sealed enclosure may optionally comprise one or more mechanisms in the innermost volume  150  to render the electronic devices and any content stored on those devices to be permanently unusable and unreadable as described in  FIG. 18 . 
     The sealed enclosure may be located either adjacent to or remote from any heat exchange assemblies  130 ,  240  and/or pressure balancing systems and appropriate fluid transport channels between said locations are selected based optimal fluid flow and thermodynamic designs for the selected fluids. Further, any heat exchange assemblies  130 ,  240  and/or pressure balancing systems may perform their indicated functions for one or more sealed enclosures. Sealed enclosures can be installed in any orientation, placed as standalone units or stacked or grouped together to form a single structural unit of any dimensionality in a high-density configuration. 
       FIG. 3  shows a conceptual view of a single port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2  and is illustrated by showing only a portion of such sealed enclosure as a figure with an innermost enclosure wall  101  and an outermost enclosure wall  103 , wherein the innermost volume contains the primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     The fluid exchange sealed entrance assembly  302  allows primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment and functioning for the purpose of pressure equalization of the innermost volume  150  of the sealed enclosure and providing optional fluid management. The fluid exchange sealed entrance assembly  302  and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in embodiments that contain a) a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) a single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) a multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The pressure balancing system  304  is an adjacently located or remote system that functions to maintain a suitably constant fluid presence and pressure to the fluid exchange sealed entrance assembly  302  for one or more sealed enclosures. The pressure balancing system  304  is capable of supplying pressure to or removing pressure from the sealed enclosure using a single fluid exchange sealed entrance assembly  302  via connecting lines. 
     An extended surface configuration of the fluid exchange sealed entrance assembly  302  may be positioned either inside or outside of the sealed enclosure and is comprised of thermally conductive materials configured an extended surface area to effect supplement heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed entrance assembly  302 . Such extended surface configuration of the fluid exchange sealed entrance assembly  302  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows over the extended surface configuration of the fluid exchange sealed entrance assembly  302 . The flow of cooled secondary thermally conductive fluid  120  over the extended surface configuration of the fluid exchange sealed entrance assembly  302  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed entrance assembly  302 . This extended surface configuration of the fluid exchange sealed entrance assembly  302  may be utilized to condense the multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  back into the liquid phase  106 , with the result of returning the multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     One or more optional heat exchange mechanisms  320  may be disposed within the innermost volume  150  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the primary dielectric thermally conductive fluid  106 ,  108  and may be circulated through heat exchange mechanism  320  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . Heat exchange mechanisms  320  are disposed within the primary dielectric thermally conductive fluid liquid phase  106  and/or the gaseous phase  108  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  320  may be thermally and/or mechanically attached or isolated from the innermost enclosure wall  101 . Heat exchange mechanisms  320  may be thermally and/or mechanically connected to portions of the enclosed electronic devices  104 . 
     Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the innermost enclosure wall  101 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 4  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2  and is illustrated by showing only a portion of such sealed enclosure as a figure with an innermost enclosure wall  101  and an outermost enclosure wall  103 , wherein the innermost volume contains the primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     The fluid exchange sealed entrance assembly  408  and fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment and functioning for the purpose of pressure equalization of the innermost volume  150  of the sealed enclosure and providing optional fluid management. The fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) a single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) a multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. 
     The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be positioned either inside or outside of the sealed enclosure and is comprised of thermally conductive materials configured an extended surface area to effect supplement heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such extended surface configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows over the extended surface configuration of the fluid exchange sealed exhaust assembly  406 . The flow of cooled secondary thermally conductive fluid  120  over the extended surface configuration of the fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . This extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be utilized to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  back into the liquid phase  106 , with the result of returning such multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     One or more optional heat exchange mechanisms  320  may be disposed within the innermost volume  150  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the primary dielectric thermally conductive fluid  106 ,  108  and may be circulated through heat exchange mechanism  320  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . Heat exchange mechanisms  320  are disposed within the primary dielectric thermally conductive fluid liquid phase  106  and/or the gaseous phase  108  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  320  may be thermally and/or mechanically attached or isolated from the innermost enclosure wall  101 . Heat exchange mechanisms  320  may be thermally and/or mechanically connected to portions of the enclosed electronic devices  104 . 
     Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the innermost enclosure wall  101 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 5  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2  and is illustrated by showing only a portion of such sealed enclosure as a figure with an innermost enclosure wall  101  and an outermost enclosure wall  103 , wherein the innermost volume contains the primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment and functioning for the purpose of pressure equalization of the innermost volume  150  of the sealed enclosure, providing optional fluid management, and providing optional motive force to kinetic processes located in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) a single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) a multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. 
     The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be positioned either inside or outside of the sealed enclosure and is comprised of thermally conductive materials configured an extended surface area to effect supplement heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such extended surface configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows over the extended surface configuration of the fluid exchange sealed exhaust assembly  406 . The flow of cooled secondary thermally conductive fluid  120  over the extended surface configuration of the fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . This extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be utilized to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  back into the liquid phase  106 , with the result of returning such multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     One or more optional heat exchange mechanisms  320  may be disposed within the innermost volume  150  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the primary dielectric thermally conductive fluid  106 ,  108  and may be circulated through heat exchange mechanism  320  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . Heat exchange mechanisms  320  are disposed within the primary dielectric thermally conductive fluid liquid phase  106  and/or the gaseous phase  108  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  320  may be thermally and/or mechanically attached or isolated from the innermost enclosure wall  101 . Heat exchange mechanisms  320  may be thermally and/or mechanically connected to portions of the enclosed electronic devices  104 . 
     An optional mechanism may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  by using fluid pressure to supply the motive force for optional kinetic processes that include a) fluid circulation by means of a fluid pressure driven pump  502 , b) fluid circulation by means of a bubbler  506 , c) fluid circulation by means of both a fluid pressure driven pump  502  and a bubbler  506 , or d) other fluid circulation mechanisms. These optional motive force mechanisms are driven by pressured fluid supplied by the pressure balancing system  304  to the motive force sealed entrance assembly  504  via connecting lines. The motive force sealed entrance assembly  504  may be optionally configured with a pressure regulator allowing the motive force fluid pressure source to supply a high pressure fluid to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for the proper operation of the fluid pressure driven kinetic processes. The motive force sealed entrance assembly  504  may be configured with a pressure control valve assembly that allows fluid pressure from the pressure balancing system  304  to be turned on or off, thereby supplying fluid pressure from the pressure balancing system  304  to kinetic processes such as the fluid pressure driven pump  502  and/or the bubbler  506  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the innermost enclosure wall  101 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates. Fluid pressure supplied by the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure via the exhaust of the fluid pressure driven pump  502  and/or the bubbler  506  is returned to the pressure balancing system  304  through the fluid exchange sealed exhaust assembly  406 . Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a pumping action are comprised of a fluid pressure driven pump  502  connected to the motive force sealed entrance assembly  504 , a pump intake  312 , and a pump discharge  314 . Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a bubbling action are comprised of a bubbler  506  connected to the motive force sealed entrance assembly  504 , and a bubbler connecting line  508 , said bubbler  506  located in the lower part of the innermost volume  150  of the sealed enclosure and comprising a mechanical means of releasing a pressured fluid in a predominately gaseous phase via a number of bubbler pores of various sizes. If the bubbler  506  and the fluid pressure driven pump  502  are both configured in an embodiment, the fluid pressure utilized to drive the bubbler  506  is supplied by the discharge fluid pressure of the fluid pressure driven pump  502  via connection lines  508 . The motive force sealed entrance assembly  504  may be located either inside or outside the sealed enclosure. 
       FIG. 6  shows a conceptual view of an internal pressure balancing mechanism with optional dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described herein  FIGS. 1, 2  and is illustrated by showing only a portion of such sealed enclosure as a figure with an innermost enclosure wall  101  and an outermost enclosure wall  103 , wherein the innermost volume contains the primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     Pressure equalization of the innermost volume  150  of the sealed enclosure as well as optional fluid management is provided by a) one or more first mechanisms disclosed as an internal pressure balancing mechanism and comprised of gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators, and b) an optional second mechanism comprised of fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , pressure balancing system  304 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators such that if said first mechanisms and said second mechanism are present in an embodiment, one of the said mechanisms may be designated as the primary functional mechanism while the remaining said mechanisms are designated as secondary functional mechanisms, or all of the said mechanisms may be designated as the primary functional mechanisms. The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and/or fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , and gaseous and condensed fluid exhaust assembly  608  work in concert to allow gaseous fluid that is present in the innermost volume  150  of the sealed enclosure to be compressed and stored for release back into the innermost volume  150  of the sealed enclosure as necessary to maintain a specified range of fluid pressure within the innermost volume  150  of the sealed enclosure. The gaseous fluid entrance assembly  606  may comprise a a) check valve that allows only fluid in the gaseous phase to flow into the intake of the gaseous fluid compressor  602 , or b) pressure relief valve that allows pressure to be a specified amount greater in innermost volume  150  than the pressure in the intake of the gaseous fluid compressor  602 . When the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value, the gaseous fluid compressor  602  is activated and gaseous fluid  108  flows through the gaseous fluid entrance assembly  606  into the intake of the gaseous fluid compressor  602  where such gaseous fluid is compressed by the gaseous fluid compressor  602  and stored in pressurized gaseous fluid storage  604  thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. 
     The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the compressed gaseous fluid  108  by configurations comprising construction methodology or optional heat exchanger  610 . In embodiments with multi-phase thermally conductive fluid, as heat is removed from the multi-phase thermally conductive fluid  108  disposed inside the pressurized gaseous fluid storage  604 , at least a portion of the multi-phase thermally conductive fluid  108  in the gaseous phase condenses to liquid phase  106  and flows as a liquid to the lower part of pressurized gaseous fluid storage  604  thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The gaseous and condensed fluid exhaust assembly  608  is comprised of a pressure regulator and a controllable pressure relief valve as to allow fluid  106 ,  108  in gaseous and/or liquid phase that is disposed in the pressurized gaseous fluid storage  604  to be discharged into the innermost volume  150  when conditions exist such as a) a specific command to act is issued by control systems, b) pressure in innermost volume  150  falls below a specified value, c) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level above specified value, d) a required operation prior to the operation of the gaseous fluid compressor  602 , e) after powering up or before powering down the system of electronic devices  104 , or f) other conditions as required by safety or operational status with said discharge action continuing until such time as a) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level below specified value, b) pressure in the innermost volume  150  rise above a specified value, or c) other conditions as required by safety or operational status. 
     An optional heat exchanger  610  comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger removes heat from pressurized gaseous fluid storage  604 . The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the fluid  108  that is disposed internally to the pressurized gaseous fluid storage  604 . The heat exchanger  610  may be positioned partially or completely inside or outside of the sealed enclosure. The pressurized gaseous fluid storage  604  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  610 . In embodiments with multi-phase thermally conductive fluid, the cooled pressurized gaseous fluid storage  604  serves to remove heat from the multi-phase thermally conductive fluid  108  that is confined in the pressurized gaseous fluid storage  604  which may further serve to condense multi-phase thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment. The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. 
     The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be positioned either inside or outside of the sealed enclosure and is comprised of thermally conductive materials configured an extended surface area to effect supplement heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such extended surface configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows over the extended surface configuration of the fluid exchange sealed exhaust assembly  406 . The flow of cooled secondary thermally conductive fluid  120  over the extended surface configuration of the fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . This extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be utilized to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  back into the liquid phase  106 , with the result of returning such multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     One or more optional heat exchange mechanisms  320  may be disposed within the innermost volume  150  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the primary dielectric thermally conductive fluid  106 ,  108  and may be circulated through heat exchange mechanism  320  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . Heat exchange mechanisms  320  are disposed within the primary dielectric thermally conductive fluid liquid phase  106  and/or the gaseous phase  108  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  320  may be thermally and/or mechanically attached or isolated from the innermost enclosure wall  101 . Heat exchange mechanisms  320  may be thermally and/or mechanically connected to portions of the enclosed electronic devices  104 . 
     Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the innermost enclosure wall  101 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 7  shows a conceptual view of an internal pressure balancing mechanism with dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure, optional heat exchange mechanisms, and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described herein  FIGS. 1, 2  and is illustrated by showing only a portion of such sealed enclosure as a figure with an innermost enclosure wall  101  and an outermost enclosure wall  103 , wherein the innermost volume contains the primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     Pressure equalization of the innermost volume  150  of the sealed enclosure as well as optional fluid management is provided by a) one or more first mechanisms disclosed as an internal pressure balancing mechanism and comprised of gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators, and b) an optional second mechanism comprised of fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , pressure balancing system  304 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators such that if said first mechanisms and said second mechanism are present in an embodiment, one of the said mechanisms may be designated as the primary functional mechanism while the remaining said mechanisms are designated as secondary functional mechanisms, or all of the said mechanisms may be designated as the primary functional mechanisms. The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and/or fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , and gaseous and condensed fluid exhaust assembly  608  work in concert to allow gaseous fluid that is present in the innermost volume  150  of the sealed enclosure to be compressed and stored for release back into the innermost volume  150  of the sealed enclosure as necessary to maintain a specified range of fluid pressure within the innermost volume  150  of the sealed enclosure. The gaseous fluid entrance assembly  606  may comprise a a) check valve that allows only fluid in the gaseous phase to flow into the intake of the gaseous fluid compressor  602 , or b) a pressure relief valve that allows pressure to be a specified amount greater in innermost volume  150  than the pressure in the intake of the gaseous fluid compressor  602 . When the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value, the gaseous fluid compressor  602  is activated and gaseous fluid  108  flows through the gaseous fluid entrance assembly  606  into the intake of the gaseous fluid compressor  602  where such gaseous fluid is compressed by the gaseous fluid compressor  602  and stored in pressurized gaseous fluid storage  604  thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. 
     The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the compressed gaseous fluid  108  by configurations comprising construction methodology or optional heat exchanger  610 . In embodiments with multi-phase thermally conductive fluid, as heat is removed from the multi-phase thermally conductive fluid  108  disposed inside the pressurized gaseous fluid storage  604 , at least a portion of the multi-phase thermally conductive fluid  108  in the gaseous phase condenses to liquid phase  106  and flows as a liquid to the lower part of pressurized gaseous fluid storage  604  thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The gaseous and condensed fluid exhaust assembly  608  is comprised of a pressure regulator and a controllable pressure relief valve as to allow fluid  106 ,  108  in gaseous and/or liquid phase that is disposed in the pressurized gaseous fluid storage  604  to be discharged into the innermost volume  150  when conditions exist such as a) a specific command to act is issued by control systems, b) pressure in innermost volume  150  falls below a specified value, c) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level above specified value, d) a required operation prior to the operation of the gaseous fluid compressor  602 , e) after powering up or before powering down the system of electronic devices  104 , or f) other conditions as required by safety or operational status with said discharge action continuing until such time as a) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level below specified value, b) pressure in the innermost volume  150  rise above a specified value, or c) other conditions as required by safety or operational status. 
     An optional heat exchanger  610  comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger removes heat from pressurized gaseous fluid storage  604 . The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the fluid  108  that is disposed internally to the pressurized gaseous fluid storage  604 . The heat exchanger  610  may be positioned partially or completely inside or outside of the sealed enclosure. The pressurized gaseous fluid storage  604  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  610 . In embodiments with multi-phase thermally conductive fluid, the cooled pressurized gaseous fluid storage  604  serves to remove heat from the multi-phase thermally conductive fluid  108  that is confined in the pressurized gaseous fluid storage  604  which may further serve to condense multi-phase thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment. The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be positioned either inside or outside of the sealed enclosure and is comprised of thermally conductive materials configured an extended surface area to effect supplement heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such extended surface configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows over the extended surface configuration of the fluid exchange sealed exhaust assembly  406 . The flow of cooled secondary thermally conductive fluid  120  over the extended surface configuration of the fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . This extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be utilized to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  back into the liquid phase  106 , with the result of returning such multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     One or more optional heat exchange mechanisms  320  may be disposed within the innermost volume  150  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the primary dielectric thermally conductive fluid  106 ,  108  and may be circulated through heat exchange mechanism  320  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . Heat exchange mechanisms  320  are disposed within the primary dielectric thermally conductive fluid liquid phase  106  and/or the gaseous phase  108  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  320  may be thermally and/or mechanically attached or isolated from the innermost enclosure wall  101 . Heat exchange mechanisms  320  may be thermally and/or mechanically connected to portions of the enclosed electronic devices  104 . 
     An optional mechanism may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  by using fluid pressure to supply the motive force for optional kinetic processes that comprise a) fluid circulation by means of a fluid pressure driven pump  502 , b) fluid circulation by means of a bubbler  506 , c) fluid circulation by means of both a fluid pressure driven pump  502  and a bubbler  506 , or d) other fluid circulation mechanisms. These optional motive force mechanisms are driven by pressured fluid supplied by a) pressurized gaseous fluid storage  604 , and/or b) the pressure balancing system  304  to the motive force sealed entrance assembly  504  via connecting lines. The motive force sealed entrance assembly  504  may be optionally configured with a pressure regulator allowing the motive force fluid pressure source to supply a high pressure fluid to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for the proper operation of the fluid pressure driven kinetic processes. The motive force sealed entrance assembly  504  may be configured with a pressure control valve assembly that allows fluid pressure from the motive force fluid pressure source to be turned on or off, thereby supplying fluid pressure from the motive force fluid pressure source to kinetic processes such as the fluid pressure driven pump  502  and/or the bubbler  506  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the innermost enclosure wall  101 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates. Fluid pressure supplied by the motive force fluid pressure source into the innermost volume  150  of the sealed enclosure via the exhaust of the fluid pressure driven pump  502  and/or the bubbler  506  is managed by the designated pressure balancing system. Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a pumping action are comprised of a fluid pressure driven pump  502  connected to the motive force sealed entrance assembly  504 , a pump intake  312 , and a pump discharge  314 . Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a bubbling action are comprised of a bubbler  506  connected to the motive force sealed entrance assembly  504 , and a bubbler connecting line  508 , said bubbler  506  located in the lower part of the innermost volume  150  of the sealed enclosure and comprising a mechanical means of releasing a pressured fluid in a predominately gaseous phase via a number of bubbler pores of various sizes. If the bubbler  506  and the fluid pressure driven pump  502  are both configured in an embodiment, the fluid pressure utilized to drive the bubbler  506  is supplied by the discharge fluid pressure of the fluid pressure driven pump  502  via connection lines  508 . The motive force sealed entrance assembly  504  may be located either inside or outside the sealed enclosure. 
       FIG. 8  shows a conceptual view of a dual port pressure balancing mechanism and/or an internal pressure balancing mechanism used to relieve positive and negative pressures in the intermediate wall of a sealed enclosure, optional heat exchange mechanisms, and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosure described in  FIG. 2  and is illustrated by showing only a portion of such sealed enclosure as a figure with an innermost enclosure wall  101 , intermediate enclosure wall  202 , and an outermost enclosure wall  103 , wherein the innermost volume  150  contains the primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the innermost volume  150  of the sealed enclosure and wherein the intermediate volume  251  contains the secondary intermediate thermally conductive fluid  222 ,  224  that either completely or partially fills the intermediate volume  251  of the sealed enclosure. This embodiment is illustrated to disclosure various aspects of embodiments of pressure balancing, fluid management, and fluid circulation mechanisms configured for multiple wall sealed enclosures as shown in  FIG. 2 . One skilled in the art, using this disclosure, could develop additional embodiments applying the disclosures in  FIGS. 3, 4, 5, 6, 7  to sealed enclosures as described in  FIG. 2 . 
     Pressure equalization of the intermediate volume  251  of the sealed enclosure as well as optional fluid management is provided by a) an optional one or more first mechanisms disclosed as an internal pressure balancing mechanism and comprised of gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators, or b) an optional second mechanism comprised of fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , a pressure balancing system  304 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators such that if said first mechanisms and said second mechanism are present in an embodiment, one of the said mechanisms may be designated as the primary functional mechanism while the remaining said mechanisms are designated as secondary functional mechanisms, or all of the said mechanisms may be designated as the primary functional mechanisms. The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and/or fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any secondary thermally conductive fluid, but is used advantageously in the embodiments that contain a) secondary intermediate single phase thermally conductive fluid  222  in the liquid phase, said fluid filling less than the entirety of intermediate volume  251  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  224 , b) secondary intermediate single phase thermally conductive fluid  222  in the gaseous phase, said fluid filling the entirety of intermediate volume  251 , or c) secondary intermediate multi-phase phase thermally conductive fluid  222 , said fluid at least partially filling the entirety of intermediate volume  251  with portions of said fluid existing in the liquid phase  222  and portions of said fluid existing in the gaseous phase  224  in varying proportions relative to the temperature, pressure, and composition of said secondary intermediate multi-phase phase thermally conductive fluid  222  and if said secondary intermediate multi-phase phase thermally conductive fluid  222  fills less than the entirety of intermediate volume  251 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  224 . 
     The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , and gaseous and condensed fluid exhaust assembly  608  work in concert to allow gaseous fluid that is present in the intermediate volume  251  of the sealed enclosure to be compressed and stored for release back into the intermediate volume  251  of the sealed enclosure as necessary to maintain a specified range of fluid pressure within the intermediate volume  251  of the sealed enclosure. The gaseous fluid entrance assembly  606  may comprise a a) check valve that allows only fluid in the gaseous phase to flow into the intake of the gaseous fluid compressor  602 , or b) a pressure relief valve that allows pressure to be a specified amount greater in intermediate volume  251  than the pressure in the intake of the gaseous fluid compressor  602 . When the fluid pressure in the intermediate volume  251  of the sealed enclosure rises above a specified value, the gaseous fluid compressor  602  is activated and gaseous fluid  224  flows through the gaseous fluid entrance assembly  606  into the intake of the gaseous fluid compressor  602  where such gaseous fluid is compressed by the gaseous fluid compressor  602  and stored in pressurized gaseous fluid storage  604  thereby lowering the fluid pressure in the intermediate volume  251  of the sealed enclosure. 
     The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the compressed gaseous fluid  108  by configurations comprising construction methodology or optional heat exchanger  610 . In embodiments with multi-phase thermally conductive fluid, as heat is removed from the multi-phase thermally conductive fluid  224  disposed inside the pressurized gaseous fluid storage  604 , at least a portion of the multi-phase thermally conductive fluid  224  in the gaseous phase condenses to liquid phase  222  and flows as a liquid to the lower part of pressurized gaseous fluid storage  604  thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  224  to the liquid phase  222 . 
     The gaseous and condensed fluid exhaust assembly  608  is comprised of a pressure regulator and a controllable pressure relief valve as to allow fluid  222 ,  224  in gaseous and/or liquid phase that is disposed in the pressurized gaseous fluid storage  604  to be discharged into the intermediate volume  251  when conditions exist such as a) a specific command to act is issued by control systems, b) pressure in intermediate volume  251  falls below a specified value, c) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level above specified value, d) a required operation prior to the operation of the gaseous fluid compressor  602 , e) after powering up or before powering down the system of electronic devices  104 , or f) other conditions as required by safety or operational status with said discharge action continuing until such time as a) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level below specified value, b) pressure in the intermediate volume  251  rise above a specified value, or c) other conditions as required by safety or operational status. 
     An optional heat exchanger  610  comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger removes heat from pressurized gaseous fluid storage  604 . The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the fluid  108  that is disposed internally to the pressurized gaseous fluid storage  604 . The heat exchanger  610  may be positioned partially or completely inside or outside of the sealed enclosure. The pressurized gaseous fluid storage  604  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  610 . In embodiments with multi-phase thermally conductive fluid, the cooled pressurized gaseous fluid storage  604  serves to remove heat from the multi-phase thermally conductive fluid  224  that is confined in the pressurized gaseous fluid storage  604  which may further serve to condense multi-phase thermally conductive fluid from the gaseous phase  224  into the liquid phase  222  of said fluid, thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  224  to the liquid phase  222 . 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow secondary intermediate thermally conductive fluid  222 ,  224  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment. The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the intermediate volume  251  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the intermediate volume  251  of the sealed enclosure when the fluid pressure in the intermediate volume  251  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the intermediate volume  251  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. 
     The pressure balancing system  304  is capable of removing fluid pressure from the intermediate volume  251  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from intermediate volume  251  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the intermediate volume  251  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the intermediate volume  251  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be positioned either inside or outside of the sealed enclosure and is comprised of thermally conductive materials configured an extended surface area to effect supplement heat removal from the secondary intermediate thermally conductive fluid  222 ,  224  that is transported through the fluid exchange sealed exhaust assembly  406 . Such extended surface configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows over the extended surface configuration of the fluid exchange sealed exhaust assembly  406 . The flow of cooled secondary thermally conductive fluid  120  over the extended surface configuration of the fluid exchange sealed exhaust assembly  406  serves to remove heat from the secondary thermally conductive fluid  222 ,  224  that is transported through the fluid exchange sealed exhaust assembly  406 . This extended surface configuration of the fluid exchange sealed exhaust assembly  406  may be utilized to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  224  back into the liquid phase  222 , with the result of returning such secondary intermediate thermally conductive fluid  222  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of secondary intermediate thermally conductive fluid  222  within the sealed enclosure. 
     One or more optional heat exchange mechanisms  320  may be disposed within the intermediate volume  251  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the secondary thermally conductive fluid  222 ,  224  and may be circulated through heat exchange mechanism  320  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . Heat exchange mechanisms  320  are disposed within the secondary thermally conductive fluid liquid phase  222  and/or the gaseous phase  224  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  320  may be thermally and/or mechanically attached or isolated from the enclosure wall  101 ,  202 . 
     Heat exchange, control, pressure balancing, fluid maintenance, and/or fluid circulation functionality of the innermost volume  150  of the sealed enclosure may be provided for by applying any of the disclosures in  FIGS. 3, 4, 5, 6, 7  to innermost volume  150  of the sealed enclosure. Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the innermost enclosure wall  101 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 9  shows a conceptual view of a sealed enclosure design comprising an enclosure wall  901  that enclose electronic devices  104  and a primary dielectric thermally conductive fluid  106 ,  108  in the innermost volume  150  and an optional heat exchange mechanism  920  in the innermost volume  150  that contains a secondary thermally conductive fluid  120 . The innermost volume  150  contains a single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. In an embodiment that comprises a single phase primary dielectric thermally conductive fluid  106  in the gaseous phase, said fluid will fill the entirety of innermost volume  150 . In an embodiment that comprises a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid may fill the entirety of innermost volume  150  or may fill less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 . In an embodiment that comprises a multi-phase primary dielectric thermally conductive fluid  106 , said fluid may fill the entirety of innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     Embodiments of the disclosed sealed enclosure may be configured with single phase or multi-phase thermally conductive fluids. A single phase thermally conductive fluid will transfer heat using the principles of convection and conduction. A multi-phase thermally conductive fluid will transfer heat using the principles of convection, conduction, and phase change. As the multi-phase thermally conductive fluid in the liquid phase absorbs heat, a portion of said fluid is converted to the gaseous phase. Conversely, as the multi-phase thermally conductive fluid in the gaseous phase gives up heat by various heat exchange processes, a portion of said multi-phase thermally conductive fluid in the gaseous phase condenses back into multi-phase thermally conductive fluid in the liquid phase. If the amount of fluid in the gaseous phase  108  exceeds the volume of space internal to the sealed enclosure that is unoccupied by the multi-phase thermally conductive fluid in the liquid phase  106 , said fluid in the gaseous phase  108  will exert a positive pressure inside the innermost volume  150  of the sealed enclosure. Conversely, if the amount of fluid in the gaseous phase  108  is less than the volume of space internal to the sealed enclosure that is unoccupied by the multi-phase thermally conductive fluid in the liquid phase  106 , said fluid in the gaseous phase  108  will exert a negative pressure inside the innermost volume  150  of the sealed enclosure. In addition, some amount of multi-phase thermally conductive fluid in the gaseous phase  108  and optional other distinct and suitable compressible gaseous fluid may exist in a space of the sealed enclosure for various purposes comprising cushioning positive and negative pressures in the sealed enclosure, maintaining a headspace in a specified range of pressure as temperature varies, displacing thermally conductive fluid to allow weight adjustments to the overall sealed enclosure, and/or allowing accumulation of gaseous fluid used to drive internal kinetic processes or gaseous based mixing functionality. A single phase thermally conductive fluid may either completely or partially fill a space of the sealed enclosure and any space in the sealed enclosure that is not filled by said single phase thermally conductive fluid may be filled with a distinct and suitable compressible gaseous fluid for various purposes comprising cushioning positive and negative pressures in the sealed enclosure, maintaining a headspace in a specified range of pressure as temperature varies, displacing thermally conductive fluid to allow weight adjustments to the overall sealed enclosure, and/or allowing accumulation of gaseous fluid used to drive internal kinetic processes or gaseous based mixing functionality. 
     Electronic devices  104  may be disposed within the innermost volume  150  of the sealed enclosure in a variety of configurations to facilitate thermal transfer and best practice process efficiency. The enclosed electronic devices  104  dissipate internally generated heat into the innermost volume  150 , the primary dielectric thermally conductive fluid  106 , and the enclosure walls  901  of the sealed enclosure. One or more optional heat exchange mechanisms  920  may be disposed within the innermost volume  150  such that a secondary single phase or multi-phase thermally conductive fluid  120  is segregated from the primary dielectric thermally conductive fluid  106 ,  108  and may be circulated through heat exchange mechanism  920  to an external local or remote heat exchanger assembly  130  via connecting lines  132 ,  134 . 
     Heat exchange mechanisms  920  may be disposed within the primary dielectric thermally conductive fluid liquid phase  106  and/or the gaseous phase  108  as heat exchange mechanisms comprising concentric tube, shell and tube, plate, fin, plate-fin, tube-fin, condenser tubing, loops, and split-flow loops. Heat exchange mechanisms  920  may be thermally and/or mechanically attached or isolated from enclosure walls  901 . Heat exchange mechanisms  920  may be thermally and/or mechanically connected to portions of the enclosed electronic devices  104 . 
     The secondary single phase or multi-phase thermally conductive fluid  120  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. The secondary thermally conductive fluid  120  is circulated away from the sealed enclosure via a fluid-tight piping connection  132 , is presented to one or more heat exchanger assemblies  130  for the purpose of removing heat from the fluid, and returned to the sealed enclosure via a fluid-tight piping connection  134 . The secondary thermally conductive fluid  120 : a) is circulated within a heat exchanger mechanism  920  disposed in innermost volume  150  where internal heat is absorbed from within innermost volume  150 ; b) is removed from a heat exchange mechanism  920  and circulated through an adjacent heat exchange assembly  130  where a portion of the heat is removed from the thermally conductive fluid  120 ; and c) is returned to a heat exchange mechanism  920 . The secondary thermally conductive fluid  120  is circulated in such a fashion as to provide appropriate heat removal from the sealed enclosure. Heat exchange may be accomplished by a variety of means to one or more external heat sink systems  130  that may be of various types including ventilation, compression, evaporation, and geothermal systems. The heat exchange system  130  may reject heat directly into the immediate environment via passive or forced circulation, or the fluid may be circulated away from the sealed enclosure, cooled in a remote location, and then re-circulated back to the sealed enclosure at a lower temperature. The enclosure wall  901  may thermally conductive to function as a heat exchanger or thermally insulating. 
     The enclosure walls  901  may be thermally connected by mechanical connection or other means. Portions of the enclosure walls  901  may be optionally bonded to additional materials that facilitate enhanced thermal conduction or thermal insulation of the enclosure walls  901 . The outermost surface of enclosure walls  901  may reject heat into objects and the environment that surround the sealed enclosure. Cooling fins may be affixed to the wall surfaces  901  to aid in heat transport and dissipation. Wall surfaces  901  may have surface features of various dimensionality to aid in heat transport and dissipation. The sealed enclosure has fluid-tight entrances  110  from the outermost surface to the innermost volume  150  for power, networking, and other control and monitoring signals and functions which are appropriately connected to one or more electronic or other functional devices disposed in the innermost volume  150  of the sealed enclosure. 
     The sealed enclosure may optionally comprise heat exchange, control, pressure balancing, fluid maintenance, and/or fluid circulation functionality as described in  FIGS. 10, 11, 12, 13, 14 . Embodiment variations and details described herein apply equally to sealed enclosures with or without an interior  108  fluid head space. The sealed enclosure may optionally comprise one or more channels disposed in the innermost volume  150  as described in  FIGS. 15, 16 . The sealed enclosure may optionally comprise one or more spacers disposed in the innermost volume  150  of the sealed enclosure as described in  FIG. 17 . The sealed enclosure may optionally comprise one or more mechanisms in the innermost volume  150  to render the electronic devices and any content stored on those devices to be permanently unusable and unreadable as described in  FIG. 18 . 
     The sealed enclosure may be located either adjacent to or remote from any heat exchange assemblies  130  and/or pressure balancing systems and appropriate fluid transport channels between said locations are selected based optimal fluid flow and thermodynamic designs for the selected fluids. Further, any heat exchange assemblies  130  and/or pressure balancing systems may perform their indicated functions for one or more sealed enclosures. Sealed enclosures can be installed in any orientation, placed as standalone units or stacked or grouped together to form a single structural unit of any dimensionality in a high-density configuration. 
       FIG. 10  shows a conceptual view of a single port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIG. 9  and is illustrated by showing only a portion of such sealed enclosure as a figure with an enclosure wall  901 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     The fluid exchange sealed entrance assembly  302  allows primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment and functioning for the purpose of pressure equalization of the innermost volume  150  of the sealed enclosure and providing optional fluid management. The fluid exchange sealed entrance assembly  302  and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in embodiments that contain a) a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) a single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) a multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The pressure balancing system  304  is an adjacently located or remote system that functions to maintain a suitably constant fluid presence and pressure to the fluid exchange sealed entrance assembly  302  for one or more sealed enclosures. The pressure balancing system  304  is capable of supplying pressure to or removing pressure from the sealed enclosure using a single fluid exchange sealed entrance assembly  302  via connecting lines. 
     An optional heat exchanger  1001  may wrap around the fluid exchange sealed entrance assembly  302  positioned either inside or outside of the sealed enclosure in which the fluid exchange sealed entrance assembly  302  includes a heat exchanger comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger and is configured to effect supplemental heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed entrance assembly  302 . Such configuration of the fluid exchange sealed entrance assembly  302  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1001  and around a portion of the fluid exchange sealed entrance assembly  302 . The cooled fluid exchange sealed entrance assembly  302  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed entrance assembly  302  which may further serve to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, with the result of returning the multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the enclosure wall  901 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 11  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIG. 9  and is illustrated by showing only a portion of such sealed enclosure as a figure with an enclosure wall  901 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment and functioning for the purpose of pressure equalization of the innermost volume  150  of the sealed enclosure and providing optional fluid management. The fluid exchange sealed entrance assembly  408 , the fluid exchange sealed exhaust assembly  406 , and the pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) a single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) a multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. 
     The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An optional heat exchanger  1101  may wrap around the fluid exchange sealed exhaust assembly  406  positioned either inside or outside of the sealed enclosure in which the fluid exchange sealed exhaust assembly  406  includes a heat exchanger comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger and is configured to effect supplemental heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1101  and around a portion of the fluid exchange sealed exhaust assembly  406 . The cooled fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406  which may further serve to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, with the result of returning the multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the enclosure wall  901 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 12  shows a conceptual view of a dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIG. 9  and is illustrated by showing only a portion of such sealed enclosure as a figure with an enclosure wall  901 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment and functioning for the purpose of pressure equalization of the innermost volume  150  of the sealed enclosure, providing optional fluid management, and providing optional motive force to kinetic processes located in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408 , the fluid exchange sealed exhaust assembly  406 , and the pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) a single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) a single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) a multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. 
     The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An optional heat exchanger  1101  may wrap around the fluid exchange sealed exhaust assembly  406  positioned either inside or outside of the sealed enclosure in which the fluid exchange sealed exhaust assembly  406  includes a heat exchanger comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger and is configured to effect supplemental heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1101  and around a portion of the fluid exchange sealed exhaust assembly  406 . The cooled fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406  which may further serve to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, with the result of returning the multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     An optional mechanism may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  by using fluid pressure to supply the motive force for optional kinetic processes that include a) fluid circulation by means of a fluid pressure driven pump  502 , b) fluid circulation by means of a bubbler  506 , c) fluid circulation by means of both a fluid pressure driven pump  502  and a bubbler  506 , or d) other fluid circulation mechanisms. These optional motive force mechanisms are driven by pressured fluid supplied by the pressure balancing system  304  to the motive force sealed entrance assembly  504  via connecting lines. The motive force sealed entrance assembly  504  may be optionally configured with a pressure regulator allowing the motive force fluid pressure source to supply a high pressure fluid to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for the proper operation of the fluid pressure driven kinetic processes. The motive force sealed entrance assembly  504  may be configured with a pressure control valve assembly that allows fluid pressure from the pressure balancing system  304  to be turned on or off, thereby supplying fluid pressure from the pressure balancing system  304  to kinetic processes such as the fluid pressure driven pump  502  and/or the bubbler  506  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the enclosure wall  901 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates. Fluid pressure supplied by the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure via the exhaust of the fluid pressure driven pump  502  and/or the bubbler  506  is returned to the pressure balancing system  304  through the fluid exchange sealed exhaust assembly  406 . Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a pumping action are comprised of a fluid pressure driven pump  502  connected to the motive force sealed entrance assembly  504 , a pump intake  312 , and a pump discharge  314 . Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a bubbling action are comprised of a bubbler  506  connected to the motive force sealed entrance assembly  504 , and a bubbler connecting line  508 , said bubbler  506  located in the lower part of the innermost volume  150  of the sealed enclosure and comprising a mechanical means of releasing a pressured fluid in a predominately gaseous phase via a number of bubbler pores of various sizes. If the bubbler  506  and the fluid pressure driven pump  502  are both configured in an embodiment, the fluid pressure utilized to drive the bubbler  506  is supplied by the discharge fluid pressure of the fluid pressure driven pump  502  via connection lines  508 . The motive force sealed entrance assembly  504  may be located either inside or outside the sealed enclosure. 
       FIG. 13  shows a conceptual view of an internal pressure balancing mechanism with optional dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional primary dielectric thermally conductive fluid pump circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIG. 9  and is illustrated by showing only a portion of such sealed enclosure as a figure with an enclosure wall  901 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown 
     Pressure equalization of the innermost volume  150  of the sealed enclosure as well as optional fluid management is provided by a) one or more first mechanisms comprised of gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators, and b) an optional second mechanism comprised of a fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , pressure balancing system  304 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators such that if said first mechanisms and said second mechanism are present in an embodiment, one of the said mechanisms may be designated as the primary functional mechanism while the remaining said mechanisms are designated as secondary functional mechanisms, or all of the said mechanisms may be designated as the primary functional mechanisms. The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and/or fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , and gaseous and condensed fluid exhaust assembly  608  work in concert to allow gaseous fluid that is present in the innermost volume  150  of the sealed enclosure to be compressed and stored for release back into the innermost volume  150  of the sealed enclosure as necessary to maintain a specified range of fluid pressure within the innermost volume  150  of the sealed enclosure. The gaseous fluid entrance assembly  606  may comprise a a) check valve that allows only fluid in the gaseous phase to flow into the intake of the gaseous fluid compressor  602 , or b) a pressure relief valve that allows pressure to be a specified amount greater in innermost volume  150  than the pressure in the intake of the gaseous fluid compressor  602 . When the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value, the gaseous fluid compressor  602  is activated and gaseous fluid  108  flows through the gaseous fluid entrance assembly  606  into the intake of the gaseous fluid compressor  602  where such gaseous fluid is compressed by the gaseous fluid compressor  602  and stored in pressurized gaseous fluid storage  604  thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. 
     The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the compressed gaseous fluid  108  by configurations comprising construction methodology or optional heat exchanger  1310 . In embodiments with multi-phase thermally conductive fluid, as heat is removed from the multi-phase thermally conductive fluid  108  disposed inside the pressurized gaseous fluid storage  604 , at least a portion of the multi-phase thermally conductive fluid  108  in the gaseous phase condenses to liquid phase  106  and flows as a liquid to the lower part of pressurized gaseous fluid storage  604  thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The gaseous and condensed fluid exhaust assembly  608  is comprised of a pressure regulator and a controllable pressure relief valve as to allow fluid  106 ,  108  in gaseous and/or liquid phase that is disposed in the pressurized gaseous fluid storage  604  to be discharged into the innermost volume  150  when conditions exist such as a) a specific command to act is issued by control systems, b) pressure in innermost volume  150  falls below a specified value, c) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level above specified value, d) a required operation prior to the operation of the gaseous fluid compressor  602 , e) after powering up or before powering down the system of electronic devices  104 , or f) other conditions as required by safety or operational status with said discharge action continuing until such time as a) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level below specified value, b) pressure in the innermost volume  150  rise above a specified value, or c) other conditions as required by safety or operational status. 
     An optional heat exchanger  1310  comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger removes heat from pressurized gaseous fluid storage  604 . The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the fluid  108  that is disposed internally to the pressurized gaseous fluid storage  604 . The heat exchanger  1310  may be positioned partially or completely inside or outside of the sealed enclosure. The pressurized gaseous fluid storage  604  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1310 . In embodiments with multi-phase thermally conductive fluid, the cooled pressurized gaseous fluid storage  604  serves to remove heat from the multi-phase thermally conductive fluid  108  that is confined in the pressurized gaseous fluid storage  604  which may further serve to condense multi-phase thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment. The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An optional heat exchanger  1101  may wrap around the fluid exchange sealed exhaust assembly  406  positioned either inside or outside of the sealed enclosure in which the fluid exchange sealed exhaust assembly  406  includes a heat exchanger comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger and is configured to effect supplemental heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1101  and around a portion of the fluid exchange sealed exhaust assembly  406 . The cooled fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406  which may further serve to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, with the result of returning the multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     Optional mechanisms may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the enclosure wall  901 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates, embodiments of such mechanisms comprise a) a mechanism comprised of a fluid pump  310 , a pump intake  312 , and a pump discharge  314 , or b) a mechanism comprised of an impeller, fan, turbine, or propeller that rotates under motive force. 
       FIG. 14  shows a conceptual view of an internal pressure balancing mechanism with dual port pressure balancing mechanism used to relieve positive and negative pressures in a sealed enclosure and optional pressurized gaseous fluid driven primary dielectric thermally conductive fluid pump and bubbler circulation mechanisms. The sealed enclosure shown in the figure is typical of the disclosures described in  FIG. 9  and is illustrated by showing only a portion of such sealed enclosure as a figure with an enclosure wall  901 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. 
     Pressure equalization of the innermost volume  150  of the sealed enclosure as well as optional fluid management is provided by a) one or more first mechanisms comprised of gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators, and b) an optional second mechanism comprised of fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , pressure balancing system  304 , and associated connecting lines, valves, sensors, controls, wiring, power, enclosures, and regulators such that if said first mechanisms and said second mechanism are present in an embodiment, one of the said mechanisms may be designated as the primary functional mechanism while the remaining said mechanisms are designated as secondary functional mechanisms, or all of the said mechanisms may be designated as the primary functional mechanisms. The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , gaseous and condensed fluid exhaust assembly  608 , and/or fluid exchange sealed entrance assembly  408 , fluid exchange sealed exhaust assembly  406 , and pressure balancing system  304  may be configured to function with any primary dielectric thermally conductive fluid, but is used advantageously in the embodiments that contain a) single phase primary dielectric thermally conductive fluid  106  in the liquid phase, said fluid filling less than the entirety of innermost volume  150  with the remaining volume filled by at least one separate and distinct fluid in the gaseous phase  108 , b) single phase thermally conductive fluid  106  in the gaseous phase, said fluid filling the entirety of innermost volume  150 , or c) multi-phase primary dielectric thermally conductive fluid  106 , said fluid at least partially filling the innermost volume  150  with portions of said fluid existing in the liquid phase  106  and portions of said fluid existing in the gaseous phase  108  in varying proportions relative to the temperature, pressure, and composition of said multi-phase primary dielectric thermally conductive fluid  106  and if said multi-phase primary dielectric thermally conductive fluid  106 ,  108  fills less than the entirety of innermost volume  150 , the remaining volume may be filled by at least one separate and distinct fluid in the gaseous phase  108 . 
     The gaseous fluid compressor  602 , pressurized gaseous fluid storage  604 , gaseous fluid entrance assembly  606 , and gaseous and condensed fluid exhaust assembly  608  work in concert to allow gaseous fluid that is present in the innermost volume  150  of the sealed enclosure to be compressed and stored for release back into the innermost volume  150  of the sealed enclosure as necessary to maintain a specified range of fluid pressure within the innermost volume  150  of the sealed enclosure. The gaseous fluid entrance assembly  606  may comprise a a) check valve that allows only fluid in the gaseous phase to flow into the intake of the gaseous fluid compressor  602 , or b) a pressure relief valve that allows pressure to be a specified amount greater in innermost volume  150  than the pressure in the intake of the gaseous fluid compressor  602 . When the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value, the gaseous fluid compressor  602  is activated and gaseous fluid  108  flows through the gaseous fluid entrance assembly  606  into the intake of the gaseous fluid compressor  602  where such gaseous fluid is compressed by the gaseous fluid compressor  602  and stored in pressurized gaseous fluid storage  604  thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. 
     The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the compressed gaseous fluid  108  by configurations comprising construction methodology or optional heat exchanger  1310 . In embodiments with multi-phase thermally conductive fluid, as heat is removed from the multi-phase thermally conductive fluid  108  disposed inside the pressurized gaseous fluid storage  604 , at least a portion of the multi-phase thermally conductive fluid  108  in the gaseous phase condenses to liquid phase  106  and flows as a liquid to the lower part of pressurized gaseous fluid storage  604  thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The gaseous and condensed fluid exhaust assembly  608  is comprised of a pressure regulator and a controllable pressure relief valve as to allow fluid  106 ,  108  in gaseous and/or liquid phase that is disposed in the pressurized gaseous fluid storage  604  to be discharged into the innermost volume  150  when conditions exist such as a) a specific command to act is issued by control systems, b) pressure in innermost volume  150  falls below a specified value, c) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level above specified value, d) a required operation prior to the operation of the gaseous fluid compressor  602 , e) after powering up or before powering down the system of electronic devices  104 , or f) other conditions as required by safety or operational status with said discharge action continuing until such time as a) a sensor internal to the pressurized gaseous fluid storage  604  detects a liquid condensation level below specified value, b) pressure in the innermost volume  150  rise above a specified value, or c) other conditions as required by safety or operational status. 
     An optional heat exchanger  1310  comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger removes heat from pressurized gaseous fluid storage  604 . The pressurized gaseous fluid storage  604  may be comprised of thermally conductive materials configured to effect supplemental heat removal from the fluid  108  that is disposed internally to the pressurized gaseous fluid storage  604 . The heat exchanger  1310  may be positioned partially or completely inside or outside of the sealed enclosure. The pressurized gaseous fluid storage  604  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1310 . In embodiments with multi-phase thermally conductive fluid, the cooled pressurized gaseous fluid storage  604  serves to remove heat from the multi-phase thermally conductive fluid  108  that is confined in the pressurized gaseous fluid storage  604  which may further serve to condense multi-phase thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, thereby reducing the pressure inside the pressurized gaseous fluid storage  604  as an effect of said phase change of the multi-phase thermally conductive fluid from the gaseous phase  108  to the liquid phase  106 . 
     The fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  work in concert to allow primary dielectric thermally conductive fluid  106 ,  108  fluid to be exchanged between the sealed enclosure and a pressure balancing system  304 , maintaining a sealed enclosure environment. The pressure balancing system  304  is closed loop system that is an adjacently located or remote system that functions to maintain an appropriate fluid presence and pressure at the fluid exchange sealed entrance assembly  408  and the fluid exchange sealed exhaust assembly  406  for one or more sealed enclosures via connecting lines. The pressure balancing system  304  is capable of supplying fluid pressure to the innermost volume  150  of the sealed enclosure using the fluid exchange sealed entrance assembly  408  via connecting lines. The fluid exchange sealed entrance assembly  408  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from the pressure balancing system  304  into the innermost volume  150  of the sealed enclosure when the fluid pressure in the innermost volume  150  of the sealed enclosure falls below a specified value thereby raising the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed entrance assembly  408  may be optionally configured with a pressure regulator allowing the pressure balancing system  304  to distribute a high fluid pressure to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for proper pressure relief valve operation. The fluid exchange sealed entrance assembly  408  may be located either inside or outside the sealed enclosure. The pressure balancing system  304  is capable of removing fluid pressure from the innermost volume  150  of the sealed enclosure using the fluid exchange sealed exhaust assembly  406  via connecting lines. The fluid exchange sealed exhaust assembly  406  may be configured with a pressure relief valve assembly that allows fluid pressure to be released from innermost volume  150  of the sealed enclosure into the fluid pressure collection functionality of the pressure balancing system  304  when the fluid pressure in the innermost volume  150  of the sealed enclosure rises above a specified value thereby lowering the fluid pressure in the innermost volume  150  of the sealed enclosure. The fluid exchange sealed exhaust assembly  406  may be located either inside or outside the sealed enclosure. 
     An optional heat exchanger  1101  may wrap around the fluid exchange sealed exhaust assembly  406  positioned either inside or outside of the sealed enclosure in which the fluid exchange sealed exhaust assembly  406  includes a heat exchanger comprising a concentric tube, shell and tube, plate, fin, plate-fin, or tube-fin heat exchanger and is configured to effect supplemental heat removal from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406 . Such configuration of the fluid exchange sealed exhaust assembly  406  is cooled by the secondary thermally conductive fluid  120  that is returned from the secondary fluid heat exchanger  130  via connecting line  134  and flows through the heat exchanger  1101  and around a portion of the fluid exchange sealed exhaust assembly  406 . The cooled fluid exchange sealed exhaust assembly  406  serves to remove heat from the primary dielectric thermally conductive fluid  106 ,  108  that is transported through the fluid exchange sealed exhaust assembly  406  which may further serve to condense multi-phase primary dielectric thermally conductive fluid from the gaseous phase  108  into the liquid phase  106  of said fluid, with the result of returning the multi-phase primary dielectric thermally conductive fluid  106  in the liquid phase back into the sealed enclosure by gravity flow or other mechanical means in order to maintain a proper amount of primary dielectric thermally conductive fluid  106  within the sealed enclosure. 
     An optional mechanism may be additionally configured in the innermost volume  150  of the sealed enclosure in order to effect the circulation of the primary dielectric thermally conductive fluid  106  by using fluid pressure to supply the motive force for optional kinetic processes that comprise a) fluid circulation by means of a fluid pressure driven pump  502 , b) fluid circulation by means of a bubbler  506 , c) fluid circulation by means of both a fluid pressure driven pump  502  and a bubbler  506 , or d) other fluid circulation mechanisms. These optional motive force mechanisms are driven by pressured fluid supplied by a) pressurized gaseous fluid storage  604 , and/or b) the pressure balancing system  304  to the motive force sealed entrance assembly  504  via connecting lines. The motive force sealed entrance assembly  504  may be optionally configured with a pressure regulator allowing the motive force fluid pressure source to supply a high pressure fluid to said pressure regulator which reduces the fluid pressure to appropriate fluid pressure level for the proper operation of the fluid pressure driven kinetic processes. The motive force sealed entrance assembly  504  may be configured with a pressure control valve assembly that allows fluid pressure from the motive force fluid pressure source to be turned on or off, thereby supplying fluid pressure from the motive force fluid pressure source to kinetic processes such as the fluid pressure driven pump  502  and/or the bubbler  506  for the purpose of a) circulating the primary dielectric thermally conductive fluid  106  in order to more effectively transfer thermal energy from the enclosed electronic devices  104  to the primary dielectric thermally conductive fluid  106  and the enclosure wall  901 , and b) to circulate the primary dielectric thermally conductive fluid  106  through at least one filter to trap impurities and particulates. Fluid pressure supplied by the motive force fluid pressure source into the innermost volume  150  of the sealed enclosure via the exhaust of the fluid pressure driven pump  502  and/or the bubbler  506  is managed by the designated pressure balancing system. Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a pumping action are comprised of a fluid pressure driven pump  502  connected to the motive force sealed entrance assembly  504 , a pump intake  312 , and a pump discharge  314 . Embodiments that circulate the primary dielectric thermally conductive fluid  106  via a bubbling action are comprised of a bubbler  506  connected to the motive force sealed entrance assembly  504 , and a bubbler connecting line  508 , said bubbler  506  located in the lower part of the innermost volume  150  of the sealed enclosure and comprising a mechanical means of releasing a pressured fluid in a predominately gaseous phase via a number of bubbler pores of various sizes. If the bubbler  506  and the fluid pressure driven pump  502  are both configured in an embodiment, the fluid pressure utilized to drive the bubbler  506  is supplied by the discharge fluid pressure of the fluid pressure driven pump  502  via connection lines  508 . The motive force sealed entrance assembly  504  may be located either inside or outside the sealed enclosure. 
       FIG. 15  shows a conceptual view of channels to direct the flow of primary dielectric thermally conductive fluid within a sealed enclosure. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2, 9  and is illustrated by showing only a portion of such sealed enclosures as a figure with an enclosure wall  1501 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. The enclosure wall  1501  is the innermost enclosure wall  101  in  FIGS. 1, 2  and the enclosure wall  901  in  FIG. 9 . The innermost volume  150  contains a single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. 
     The sealed enclosure may optionally comprise one or more channels  1511 ,  1512  disposed in the innermost volume  150  for the purpose of providing for increased and directed convective circulation of the of single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  within the innermost volume  150  of the sealed enclosure. Channels  1511 ,  1512  disposed in the innermost volume  150  of the sealed enclosure encourage convective and/or phase separation of the warmer single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  that tends to flow upward in the innermost volume  150  of the sealed enclosure from the cooler single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  that tends to flow downward in the innermost volume  150  of the sealed enclosure. 
     Embodiments with a single phase primary dielectric thermally conductive fluid  106  will absorb heat from electronic devices  104  with the result that the portion of said single phase primary dielectric thermally conductive  106  with a higher heat content will move convectively toward the top of the innermost volume  150 . Embodiments with a multi-phase primary dielectric thermally conductive fluid  106  will absorb heat from electronic devices  104  with the result that a portion of said multi-phase primary dielectric thermally conductive fluid  106  is converted to the gaseous phase  108 . The portion of the multi-phase primary dielectric thermally conductive fluid  106  that remains in the liquid phase  106  and contains a higher heat content will move convectively toward the top of the innermost volume  150 . The portion of the multi-phase primary dielectric thermally conductive fluid  106  that is converted to the gaseous phase  108  will have a lower density than the surrounding fluid and will thus rise toward the top of the innermost volume  150 . 
     A least one channel  1512  directs rising primary dielectric thermally conductive fluid in the liquid phase  106  and/or primary dielectric thermally conductive fluid in the gaseous phase  108  toward a vertical riser channel  1511 . A least one vertical riser channel  1511  directs rising primary dielectric thermally conductive fluid in the liquid phase  106  and/or primary dielectric thermally conductive fluid in the gaseous phase  108  toward the upper portion of the innermost volume  150 . Channels  1511 ,  1512  may be configured as heat exchange mechanisms in order to remove a portion of the heat contained in said rising primary dielectric thermally conductive fluid  106 ,  108 . Channels  1511 ,  1512  may have various configurations that are adapted to specific electronic devices  104  within the sealed enclosure. Channels  1511 ,  1512  may serve to direct the primary dielectric thermally conductive fluid  106 ,  108  surrounding individual electronic devices  104  or an aggregate of electronic devices  104 . Channels  1511 ,  1512  are comprised of structures that may be closely connected in order to specifically control the fluid flow or loosely associated in order to generally control the flow of the primary dielectric thermally conductive fluid  106 ,  108 . Channels  1511 ,  1512  may be adapted to function within a sealed enclosure that is installed in various orientations. 
       FIG. 16  shows a conceptual view of channels to direct the flow of primary dielectric thermally conductive fluid within a sealed enclosure. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2, 9  and is illustrated by showing only a portion of such sealed enclosures as a figure with an enclosure wall  1501 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. The enclosure wall  1501  is the innermost enclosure wall  101  in  FIGS. 1, 2  and the enclosure wall  901  in  FIG. 9 . The innermost volume  150  contains a single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. 
     The sealed enclosure may optionally comprise one or more channels  1611 ,  1612  disposed in the innermost volume  150  for the purpose of providing for increased and directed convective circulation of the of single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  within the innermost volume  150  of the sealed enclosure. Channels  1611 ,  1612  disposed in the innermost volume  150  of the sealed enclosure encourage convective and/or phase separation of the warmer single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  that tends to flow upward in the innermost volume  150  of the sealed enclosure from the cooler single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  that tends to flow downward in the innermost volume  150  of the sealed enclosure. 
     Embodiments with a single phase primary dielectric thermally conductive fluid  106  will absorb heat from electronic devices  104  with the result that the portion of said single phase primary dielectric thermally conductive  106  with a higher heat content will move convectively toward the top of the innermost volume  150 . Embodiments with a multi-phase primary dielectric thermally conductive fluid  106  will absorb heat from electronic devices  104  with the result that a portion of said multi-phase primary dielectric thermally conductive fluid  106  is converted to the gaseous phase  108 . The portion of the multi-phase primary dielectric thermally conductive fluid  106  that remains in the liquid phase  106  and contains a higher heat content will move convectively toward the top of the innermost volume  150 . The portion of the multi-phase primary dielectric thermally conductive fluid  106  that is converted to the gaseous phase  108  will have a lower density than the surrounding fluid and will thus rise toward the top of the innermost volume  150 . 
     A least one channel  1612  directs rising primary dielectric thermally conductive fluid in the liquid phase  106  and/or primary dielectric thermally conductive fluid in the gaseous phase  108  toward a vertical riser channel  1611 . A least one vertical riser channel  1611  directs rising primary dielectric thermally conductive fluid in the liquid phase  106  and/or primary dielectric thermally conductive fluid in the gaseous phase  108  toward the upper portion of the innermost volume  150 . Channels  1611 ,  1612  may be configured as heat exchange mechanisms in order to remove a portion of the heat contained in said rising primary dielectric thermally conductive fluid  106 ,  108 . Channels  1611 ,  1612  may have various configurations that are adapted to specific electronic devices  104  within the sealed enclosure. Channels  1611 ,  1612  may serve to direct the primary dielectric thermally conductive fluid  106 ,  108  surrounding individual electronic devices  104  or an aggregate of electronic devices  104 . Channels  1611 ,  1612  are comprised of structures that may be closely connected in order to specifically control the fluid flow or loosely associated in order to generally control the flow of the primary dielectric thermally conductive fluid  106 ,  108 . Channels  1611 ,  1612  may be adapted to function within a sealed enclosure that is installed in various orientations. 
       FIG. 17  shows a conceptual view of structures for the volumetric displacement of primary dielectric thermally conductive fluid within a sealed enclosure. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2, 9  and is illustrated by showing only a portion of such sealed enclosures as a figure with an enclosure wall  1501 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. The enclosure wall  1501  is the innermost enclosure wall  101  in  FIGS. 1, 2  and the enclosure wall  901  in  FIG. 9 . The innermost volume  150  contains a single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. 
     Electronic devices  104  are typically characterized by circuit board construction that projects an uneven profile perpendicular to the plane of the circuit board thereby creating a volume of unused space above and/or below to the plane of the circuit board (“Electronic Device Space”) for a particular electronic device  104 . Electronic devices  104  may have at least one associated Electronic Device Space. An Electronic Device Space for a particular electronic device  104  is defined by the plane area of the circuit board and a maximum perpendicular height of the board components in a specified direction and does not include the volumetric space that the board components occupy in said direction perpendicular to the plane of the circuit board. The Electronic Device Space may define both a volume and a specific dimensionality that conforms to a particular electronic device  104 . 
     The sealed enclosure may optionally comprise one or more spacers  1701  comprised of solid or sealed hollow structures that are disposed in the innermost volume  150  within the primary dielectric thermally conductive fluid  106 ,  108 . Spacers  1701  may be configured to function in any location within the innermost volume  150 , but are used advantageously in embodiments in which the spacer  1701  is disposed in a) Electronic Device Space, b) volumes outside of Electronic Device Space that are located between electronic devices  104 , and c) volumes within the innermost volume  150  that would otherwise be occupied by the primary dielectric thermally conductive fluid  106 ,  108 . 
     Spacers  1701  that are disposed within Electronic Device Space of a particular electronic device  104  may have a dimensionality that forms a reflected image of at least a portion of the surface of said electronic device  104  such that a) an appropriate gap exists between said reflected image and said surface of said electronic device  104  as determine by the best practices use of the primary dielectric thermally conductive fluid  106 ,  108 , b) portions of said reflected image are in direct thermal contact with said surface of said electronic device  104 , c) portions of said reflected image are in indirect thermal contact with said surface of said electronic device  104  having thermal interface materials disposed between said portions of said reflected image and said surface of said electronic device  104 , and d) portions of said reflected image are in direct mechanical contact with said surface of said electronic device  104 . A spacer  1701  may be disposed within the Electronic Device Space of one or more electronic devices  104 . One or more spacers  1701  may be disposed with the Electronic Device Space of a particular electronic device  104 . 
     Spacers  1701  may be thermally connected to electronic devices  104  and configured as heat exchange mechanisms to transport heat from said electronic device  104  to the primary dielectric thermally conductive fluid  106 ,  108  or to transport heat directly to heat exchange or transport mechanisms illustrated in  FIGS. 1 to 16  inclusive. Spacers  1701  may be mechanically connected to electronic devices  104  or other objects disposed with the innermost volume  150 . Spacers  1701  may be configured to function as channels as disclosure in  FIGS. 15, 16 . Spacers  1701  may be configured such that at least a portion of a spacer  1701  comprises a elastic diaphragm, elastic wall materials, or hollow elastic structure that allow at least a portion of the spacer  1701  to deform under pressure. Spacers  1701  may be constructed of materials suitable to their purpose and may be comprised of a plurality of distinct materials and parts. 
       FIG. 18  shows a conceptual view of mechanisms that provide a means of rendering a portion of the electronic devices with a sealed enclosure and any content stored on those devices to be permanently unusable and unreadable. The sealed enclosure shown in the figure is typical of the disclosures described in  FIGS. 1, 2, 9  and is illustrated by showing only a portion of such sealed enclosures as a figure with an enclosure wall  1501 , wherein the innermost volume  150  contains a primary dielectric thermally conductive fluid  106 ,  108  that either completely or partially fills the interior of the sealed enclosure as shown. The enclosure wall  1501  is the innermost enclosure wall  101  in  FIGS. 1, 2  and the enclosure wall  901  in  FIG. 9 . The innermost volume  150  contains a single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  in which electronic devices  104  to be cooled are immersed or surrounded. The single phase or multi-phase primary dielectric thermally conductive fluid  106 ,  108  may be in a predominately liquid phase, gaseous phase, or in a combination liquid phase and gaseous phase. 
     The sealed enclosure may optionally comprise one or more mechanisms  1801 ,  1802 ,  1803  in the innermost volume  150  for the purpose of providing an electrical, magnetic, chemical, and/or mechanical means of rendering the electronic devices  104  and any content stored on said electronic devices  104  to be permanently unusable and unreadable (“Poison Pill Device”). Poison Pill Devices  1801 ,  1802 ,  1803  may be configured to function in any location within the innermost volume  150 . 
     Poison Pill Device  1801  is an assembly comprising a frangible container that contains a material destructive to electronic devices  104  and a motive force actuated striker that will operate on command to strike the frangible container with kinetic force sufficient to break the frangible container and release the contents of the frangible container into the innermost volume  150  of the sealed enclosure. The striker of Poison Pill Device  1801  may use electrical, pneumatic, mechanical, or inertial means to supply the motive force necessary to operate the striker. The frangible container of Poison Pill Device  1801  holds caustic, corrosive, or conductive materials that when added to the primary dielectric thermally conductive fluid  106 ,  108  serve to at least partially render the electrical devices  104  permanently unusable and unreadable. In at least one embodiment, a plurality of Poison Pill Devices  1801  are disposed in various locations within the innermost volume  150  so as to have the greatest effect on electronic devices  104 . 
     A Poison Pill Device  1802  is an assembly comprising a mechanical means of deforming electronic devices  104  that are disposed between at least one movable structural member by subjecting said electronic devices  104  to compression or tension that results in the physical destruction of a portion of said electronic devices  104 . The motive force for the moveable structural member of Poison Pill Device  1802  is comprised of a) a screw and motor assembly configured as moving plate, scissor jack, or jack screw, b) a striker assembly with at least one motive force actuated striker, or c) a lever or cylinder acting in mechanical advantage with electrical, inertial, or fluid pressure motive force. 
     A Poison Pill Device  1803  is an assembly comprising a magnetic means of destroying electronic devices  104  that are disposed in proximity with at least one electromagnet of sufficient strength to render said electronic devices  104  and any content stored on said electronic devices  104  to be permanently unusable and unreadable. In at least one embodiment, a plurality of Poison Pill Devices  1803  are disposed in various locations within the innermost volume  150  so as to have the greatest effect on electronic devices  104 . 
     Poison Pill Devices  1801 ,  1802 ,  1803  may be commanded to act by at least one control that includes remote control of an electronic device  104 , proximal electrical or mechanical control disposed on the exterior of the sealed enclosure, or autonomous control with a determination based on specific events and circumstances detected by electronic devices  104  and/or the Poison Pill Devices  1801 ,  1802 ,  1803 . Poison Pill Devices  1801 ,  1802 ,  1803  may be commanded to act in sequence and timing to maximize the destructive effect of the Poison Pill Devices  1801 ,  1802 ,  1803 . Poison Pill Devices  1801 ,  1802 ,  1803  may use other assemblies and mechanisms with the innermost volume  150  to increase the desired effect by using actions comprising mixing, pressure changes, electrical control, and electrical impulse. Poison Pill Devices  1801 ,  1802 ,  1803  may be simultaneously commanded to act by a plurality of means. Poison Pill Devices  1801 ,  1802 ,  1803  may require that a plurality of means of command are in agreement in order to initiate action. 
     Not shown, but disclosed is external means of effecting the sealed enclosure for the purpose of providing an electrical, magnetic, chemical, and/or mechanical means of rendering the electronic devices  104  and any content stored on said devices to be permanently unusable and unreadable, said external means comprising a) the introduction of caustic, corrosive, or conductive materials into the primary dielectric thermally conductive fluid  106 ,  108  by means an external pressure balancing system  304 , b) electrical impulse introduced by means of control wiring  110 , c) mechanical or thermal deformation by electrical, mechanical, or chemical means, and d) cessation of effective operation of an external heat exchanger assembly  130 ,  240 . 
     Although example diagrams to implement the elements of the disclosed subject matter have been provided, one skilled in the art, using this disclosure, could develop additional embodiments to practice the disclosed subject matter and each is intended to be included herein. 
     In addition to the above described embodiments, those skilled in the art will appreciate that this disclosure has application in a variety of arts and situations and this disclosure is intended to include the same.