Heat transmitting system for providing a heat medium with a set temperature and heat transmitting method

Discussed is a heat transmitting system for providing a heat medium with a set temperature, the system comprises a heat source, a plurality of heat storage tanks, a heat exchanger, a heat source pump, an inlet side-heat source header, a heat source header valve, an outlet side-heat source header, an outlet valve of heat storage tank, a header outlet valve, a heat transmitting line, a heat transmitting pump, a temperature sensor of heat storage tank, and a controller conducting a heat storage mode for a heat storage tank whose temperature is the set temperature or below. During the heat storage mode, the controller operates the heat source pump, controlling the specific heat storage tank to store heat, and during the heat transmission mode, the controller suspends the operation of the heat source pump, controlling the heat medium inside the specific heat storage tank to be transmitted to the heat exchanger.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to and the benefit of Korea Patent Application No. 10-2019-0115588 filed in the Korean Intellectual Property Office on Sep. 19, 2019, the contents of which are incorporated herein by reference in their entirety.

BACKGROUND

Technical Field

The present invention is related to a heat transmitting system for providing a heat medium with a set temperature and a heat transmitting method.

Related Art

The general organic rankine cycle is configured to include a pump that discharges a working fluid, an evaporator to which heat is transmitted from a heat medium and then which evaporates the working fluid discharged from the pump, an expander into which the evaporated gas is introduced and which expands the introduced gas, a generator that generates electricity through a rotation force of this expander and a condenser that condenses the working fluid discharged from the generator. In addition, an expander inlet valve is provided at the front end of the expander and an expander outlet valve is provided at the rear end thereof.

Currently, researches for one of such generator cycles, the organic rankine cycle for connecting various unutilized heats as a heat source complexly and utilizing the same have been made actively.

However, various unutilized heat sources, such as solar heat, sewage heat, et cetera have respective different temperatures and outputs thereof according to time are irregular.

In order to use these various heat sources at the need arises, a heat storage apparatus is required to store heat when consumption thereof is low, then utilizing the stored heat.

Generally, in order to store heat sources with respective different temperatures, the respective heat sources should have separate heat storage apparatuses, and it is allowed to produce heat with a temperature corresponding to the temperature of the respective heat sources only.

Further, when recovering and using heat from the heat storage apparatus, a temperature of a tank is lowered according to time. That is, the temperature of the transmitted heat source is not uniform.

Therefore, demanded is a technique that links multiple heat storage apparatuses so as to store heat sources with different temperatures, and produces a heat medium with a set temperature at the need arises.

RELATED ART DOCUMENT

Patent Document

SUMMARY

Technical Problem

Therefore, the present disclosure is provided to overcome conventional problems as described above. According to the embodiment of the present disclosure, it is aimed to provide a heat transmitting system for providing a heat medium with a set temperature and a heat transmitting method which link multiple heat storage apparatuses and store heat sources with different temperatures and which provides a heat medium with a set temperature at the need arises.

Meanwhile, technical objects to be achieved in the present invention are not limited to the aforementioned technical objects, and other technical objects, which are not mentioned above, will be apparently understood to a person having ordinary skill in the art from the following description.

Technical Solution

According to a first aspect of the present invention, a heat transmitting system for providing a heat medium with a set temperature, characterized in that a heat transmitting system may include: a heat source; a heat source; a plurality of heat storage tanks that stores heat media heated by the heat source respectively; a heat exchanger that is transmitted with heat from the heat media stored in the heat storage tanks; a heat source pump that transmits the heat media transmitted from the heat source to the heat storage tanks; an inlet side-heat source header that is connected with respective inlet ends of the plurality of heat storage tanks; a heat source header valve that is provided between the inlet side-heat source header and the respective inlet ends of the plurality of heat storage tanks; an outlet side-heat source header that is connected with respective outlet ends of the plurality of heat storage tanks; an outlet valve of heat storage tank that is provided to respective outlet ends of the plurality of heat storage tanks; a header outlet valve that is provided between the heat source and the outlet side-heat source header; a heat transmitting line that is connected between the outlet side-heat source header and an inlet end of the heat exchanger, thus transmitting the heat medium to the heat exchanger; and a heat transmitting pump that is provided to one side of an outlet line of the heat exchanger connecting the heat transmitting line or the heat exchanger and the inlet side-heat source header.

According to another aspect of the present invention, the heat transmitting system for providing a heat medium with a set temperature may include: a temperature sensor of heat storage tank that is provided to the respective heat storage tanks, thus measuring temperatures of the heat media inside the respective heat storage tanks; and a control portion that controls to conduct a heat storage mode for a heat storage tank of which temperature measured by the heat storage temperature sensor is a set temperature or below.

According to another aspect of the present invention, during the heat storage mode, the control portion operates the heat source pump, opens the header outlet valve, and also opens the outlet valve of heat storage tank and heat source header valve of a specific heat storage tank subjected to heat storage, thus controlling the specific heat storage tank to store heat.

According to another aspect of the present invention, when heat storage for the specific heat storage tank is completed, the control portion controls to conduct a heat storage mode for another heat storage tank of which temperature measured by the temperature sensor of heat storage tank is a set temperature or below.

According to another aspect of the present invention, during the heat transmission mode, the control portion suspends the operation of the heat source pump, closes the header outlet valve, operates the heat transmitting pump, and opens the outlet valve of heat storage tank and heat source header valve of a specific heat storage tank storing heat, thus controlling the heat medium inside the specific heat storage tank to be transmitted to the heat exchanger.

According to a second aspect of the present invention, the heat transmitting system for providing a heat medium with a set temperature may further includes: a temperature sensor that is provided in one side of the heat transmitting line and measures temperature of a heat medium introduced into the heat exchanger in real time; and when a value of the temperature measured in the temperature sensor drops below the specific range from a set value, the control portion opens the outlet valve of heat storage tank and heat source header valve of another heat storage tank besides the specific heat storage tank and transmits the heat medium inside the specific or another heat storage tank to the heat exchanger, thus controlling temperatures of the heat media transmitted to the heat exchanger to be maintained within the specific range.

According to another aspect of the present invention, the heat transmitting system for providing a heat medium with a set temperature may further include: a bypass valve that is provided in one side of the outlet line of heat exchanger; a bypass line that connects one side of the heat transmitting line and the bypass valve; and a bypass pump that is provided in one side of the bypass line.

According to another aspect of the present invention, when a value of the temperature measured in the temperature sensor exceeds the set temperature, the control portion operates the bypass pump and opens the bypass valve, thus allowing bypass of a part of heat media discharged from the heat exchanger to the heat transmitting line and controlling temperatures of the heat media to be maintained within the specific range.

According to second aspect of the present invention, a heat transmitting method for providing a heat medium with a set temperature with the heat transmitting system according to the second aspect of the present disclosure may include comprises the steps of: conducting a heat storage mode for a heat storage tank of which temperature measured by a temperature sensor of heat storage tank is a set temperature or below; operating a heat source pump, opening a header outlet valve and opening the outlet valve of heat storage tank and heat source header valve of a specific heat storage tank subjected to heat storage by a control portion; circulating and storing the heat medium transmitted with heat from a heat source in the specific heat storage tank; controlling to conduct a heat storage mode for another heat storage tank of which temperature by measured the temperature sensor of heat storage tank is a set temperature or below when heat storage for the specific heat storage tank is completed; suspending the operation of the heat source pump, closing the header outlet valve, operating the heat transmitting pump, and opening the outlet valve of heat storage tank and heat source header valve of a specific heat storage tank storing heat by the control portion, during the heat transmission mode; and transmitting the heat medium inside the specific heat storage tank to the heat exchanger.

According to another aspect of the present invention, the heat transmitting method for providing a heat medium with a set temperature may further include the step of measuring temperature of the heat medium introduced into the heat exchanger in real time by a temperature sensor that is provided in one side of the heat transmitting line, and when a value of the temperature measured in the temperature sensor drops below the specific range from a set value, the control portion opens the outlet valve of heat storage tank and heat source header valve of another heat storage tank besides the specific heat storage tank and transmits the heat medium inside the specific or another heat storage tank to the heat exchanger, thus controlling temperatures of the heat media transmitted to the heat exchanger to be maintained within the specific range.

According to another aspect of the present invention, the heat transmitting system may further include a bypass valve that is provided in one side of the outlet line of heat exchanger, a bypass line that connects one side of the heat transmitting line and the bypass valve and a bypass pump that is provided in one side of the bypass line, and when a value of the temperature measured in the temperature sensor exceeds the set temperature, the control portion operates the bypass pump and opens the bypass valve, thus allowing bypass of a part of heat media discharged from the heat exchanger to the heat transmitting line and controlling temperatures of the heat media to be maintained within the specific range.

According to third aspect of the present invention, a heat transmitting system for providing a heat medium with a set temperature, characterized in that a heat transmitting system may include: a first heat source; a second heat source having different temperature from that of the first heat source; a plurality of heat storage tanks that stores heat media heated by at least any one of the first heat source and the second heat source respectively; a heat exchanger that is transmitted with heat from the heat media stored in the heat storage tanks; a first heat source pump that transmits the heat media transmitted from the first heat source to the heat storage tanks; a second heat source pump that transmits the heat media transmitted from the second heat source to the heat storage tanks; a first inlet side-heat source header that is connected with the first heat source and respective inlet ends of the plurality of heat storage tanks; a second inlet side-heat source header that is connected with the second heat source and respective inlet ends of the plurality of heat storage tanks; a first heat source header valve that is provided between the first inlet side-heat source header and the respective inlet ends of the plurality of heat storage tanks; a second heat source header valve that is provided between the second inlet side-heat source header and the respective inlet ends of the plurality of heat storage tanks; a first outlet side-heat source header that is connected with respective outlet ends of the plurality of heat storage tanks; a second outlet side-heat source header that is connected with respective outlet ends of the plurality of heat storage tanks; a heat storage outlet valve that is provided to respective outlet ends of the plurality of heat storage tanks; a header outlet valve that is provided to at least one of between the first heat source and the first outlet side-heat source header and between the second heat source and the second outlet side-heat source header; a heat transmitting line that is connected between the second outlet side-heat source header and an inlet end of the heat exchanger, thus transmitting the heat medium to the heat exchanger; and a heat transmitting pump that is provided to one side of an outlet line of the heat exchanger connecting the heat transmitting line or the heat exchanger and the inlet side-heat source header.

According to another aspect of the present invention, the second heat source has temperature higher than the first heat source, and the heat transmitting system may include: a temperature sensor of heat storage tank that is provided to the respective heat storage tanks, thus measuring temperatures of the heat media inside the respective heat storage tanks; and a control portion that controls to conduct a heat storage mode for a heat storage tank of which temperature measured by the heat storage temperature sensor is a first set temperature or below or a second set temperature or below.

According to another aspect of the present invention, during the heat storage mode, the control portion operates the first heat source pump and controls the outlet valve of heat storage tank of a specific heat storage tank subjected to heat storage thus allowing the heat media of the heat storage tank to be introduced into the first outlet side-heat source header, and also opens the first heat source header valve thus controlling the specific heat storage tank to store heat by the first heat source, and when temperatures of the heat media exceed the first set temperature and are the second set temperature or below, the control portion operate the second heat source pump and controls the outlet valve of heat storage tank of the specific heat storage tank subjected to heat storage of the heat storage tank thus allowing the heat media to be introduced into the second outlet side-heat source header, and also opens the second heat source header valve thus controlling the specific heat storage tank to store heat by the second heat source.

According to another aspect of the present invention, when heat storage for the specific heat storage tank is completed, the control portion controls to conduct a heat storage mode for another heat storage tank of which temperature by measured the temperature sensor of heat storage tank is the first set temperature or below or the second set temperature or below.

According to fourth aspect of the present invention, a heat transmitting method for providing a heat medium with a set temperature with the heat transmitting system according to the third aspect of the present disclosure may include the steps of: conducting a heat storage mode for a heat storage tank of which temperature measured by a temperature sensor of heat storage tank is a first set temperature or below or a second set temperature or below; operating a first heat source pump, opening a header outlet valve and opening a first outlet valve of heat storage tank and a first heat source header valve of a specific heat storage tank subjected to heat storage by a control portion when a value of the temperature measured by the temperature sensor of heat storage tank is the first set temperature or below; circulating and storing the heat medium transmitted with heat from a first heat source in the specific heat storage tank; operating a second heat source pump, opening a header outlet valve and controlling the outlet valve of heat storage tank of a specific heat storage tank subjected to heat storage by a control portion thus allowing the heat media to be introduced into a second outlet side-heat source header, and also opening a second heat source header valve thus controlling the specific heat storage tank to store heat, when temperatures of the heat media exceed the first set temperature and are the second set temperature or below; controlling to conduct a heat storage mode for another heat storage tank of which temperature by measured the temperature sensor of heat storage tank is the first set temperature or below or the second set temperature or below by the control portion, when heat storage for the specific heat storage tank is completed; suspending the operation of the first heat source pump and the second heat source pump, closing the header outlet valve, operating the heat transmitting pump, and controlling the outlet valve of heat storage tank of a specific heat storage tank storing heat by the control portion and also opening the second heat source header valve, during the heat transmission mode; and transmitting the heat medium inside the specific heat storage tank to the heat exchanger.

According to fifth aspect of the present invention, a heat transmitting system for providing a heat medium with a set temperature, characterized in that a heat transmitting system may include: a heat source; a plurality of heat storage tanks that stores heat media heated by the heat source respectively; a heat exchanger that is transmitted with heat from the heat media stored in the heat storage tanks; a heat source pump that transmits the heat media transmitted from the heat source to the heat storage tanks; an inlet side-heat source header that is connected with respective inlet ends of the plurality of heat storage tanks; a heat source header valve that is provided between the inlet side-heat source header and the respective inlet ends of the plurality of heat storage tanks; an outlet side-heat source header that is connected with respective outlet ends of the plurality of heat storage tanks; a first outlet valve of heat storage tank that is provided to respective outlet ends of the plurality of heat storage tanks; an inlet side-transmitting header that is connected with the heat exchanger and the respective inlet ends of the plurality of heat storage tanks; an outlet side-transmitting header that is connected with the respective outlet ends of the plurality of heat storage tanks; a second outlet valve of heat storage tank that is provided between the respective outlet ends of the plurality of heat storage tanks and the outlet side-transmitting header; a heat transmitting line that is connected between the outlet side-transmitting header and an inlet end of the heat exchanger, thus transmitting the heat medium to the heat exchanger; a heat transmitting valve that is provided in one side of the heat transmitting line; and a heat transmitting pump that is provided to one side of an outlet line of the heat exchanger connecting the heat transmitting line or the heat exchanger and the inlet side-transmitting header.

According to another aspect of the present invention, during the heat transmission mode, the control portion opens the heat transmitting pump, opens the heat transmitting valve and controls the first outlet valve of heat storage tank and the second outlet valve of heat storage tank, thus controlling the heat medium inside the specific heat storage tank to be transmitted to the heat exchanger.

According to another aspect of the present invention, in the heat source transmitting state, when it is necessary to store heat in a specific heat storage tank, the control portion operates the heat source pump, opens the heat source header valve of a heat storage tank requiring heat storage and the first outlet valve of heat storage tank, thus controlling the specific heat storage tank to store heat.

Advantageous Effects

According to the embodiment of the present disclosure, a heat transmitting system for providing a heat medium with a set temperature and a heat transmitting method are capable of linking multiple heat storage apparatuses and storing heat sources with different temperatures, and providing a heat medium with a set temperature at the need arises.

Meanwhile, advantageous effects to be obtained in the present invention are not limited to the aforementioned effects, and other effects, which are not mentioned above, will be apparently understood to a person having ordinary skill in the art from the following description.

DETAILED DESCRIPTION

Hereinafter, the aforementioned aims, other aims, features and advantageous effects of the present disclosure will be understood easily referring to preferable embodiments related to the accompanying drawings. However, the present disclosure is not limited embodiments described in this specification, and may be embodied into other forms. Preferably, the embodiments in this specification are provided in order to allow disclosed contents to be exhaustive and to communicate the concept of the present disclosure to those skilled in the art.

In this specification, when a certain element is placed on another element, this means that it may be formed directly thereon or that the third element may be interposed between them. Further, in the drawings, the thickness of an element may be overstated in order to explain the technical content thereof efficiently.

The embodiments described in this specification will explained with reference to a cross-sectional view and/or a plane view. In the drawings, the thickness of a film and a region may be overstated in order to explain the technical content thereof efficiently. Accordingly, the form of exemplary drawings for a fabrication method and/or an allowable error et cetera may be modified. Thus, the embodiments according to the present disclosure are not limited to specific forms illustrated herein, but may include variations in the form resulting from the fabrication method. For example, the region illustrated with perpendicular lines may have a form to be rounded or with a predetermined curvature. Thus, regions exemplified in the drawings have attributes, and shapes thereof exemplify specific forms rather than limiting the scope of the present disclosure. In the various embodiments of this specification, terms such as ‘first’ and ‘second’ et cetera are used to describe various elements, but these elements should not be limited to such terms. These terms are merely used to distinguish one element from others. The embodiments explained and exemplified herein may include complementary embodiments thereto.

The terms used in this specification is to explain the embodiments rather than limiting the present disclosure. In this specification, the singular expression includes the plural expression unless specifically stated otherwise. The term, such as ‘comprise” does not preclude the potential existences of one or more elements.

When describing the following specific embodiments, various kinds of specific contents are made up to explain the present disclosure in detail and to help understanding thereof. However, it will be apparent for those who have knowledge to the extent of understanding the present disclosure that the present disclosure can be used without any of these specific contents. In a certain case when describing the present disclosure, the content that is commonly known to the public but is largely irrelevant to the present disclosure is not described in order to avoid confusion.

Hereinafter, a heat transmitting system for providing a heat medium with a set temperature100will be described. Firstly, configurations, functions and heat transmitting methods of the heat transmitting system for providing a heat medium with a set temperature100according to the first embodiment of the present disclosure will be described.

FIG.1is a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the first embodiment of present disclosure.FIG.2is a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the first embodiment of present disclosure during the heat storage mode. Further,FIG.3is a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the first embodiment of present disclosure during the heat transmission mode.

FIG.4is a block diagram showing signal flow of a control portion110according to the first embodiment of the present disclosure.FIG.5Ais a graph showing temperature of a heat source to be transmitted to a heat exchanger10when transmitting heat for the conventional heat source. Further,FIG.5Bis a graph showing temperature of a heat source to be transmitted to a heat exchanger10when transmitting heat according to the present disclosure.FIG.6is a flowchart of a heat transmitting method for providing a heat medium with a set temperature according to the first embodiment of the present disclosure.

As shown inFIG.1toFIG.3, the control portion110according to the first embodiment of the present disclosure is configured to include a heat source30, a plurality of heat storage tanks20, a heat exchanger10, a heat source pump40, an inlet side-heat source header50, a heat source header valve70, an outlet side-heat source header60, an outlet valve of heat storage tank80, a header outlet valve81, a heat transmitting line3, a heat transmitting pump5, et cetera.

There is no restriction in the types of a heat source to be applicable in the first embodiment of the present disclosure. Each of the plurality of heat storage tanks20is configured to store a heat medium2that is heated by the heat source30.

In addition, the heat exchanger10is configured to be transmitted with heat from the heat medium2stored in the heat storage tank20then transmitting the same to a working fluid1. The heat source pump40transmits the heat medium transmitted from the heat source30to the heat storage tank20.

The inlet side-heat source header50is connected with is connected with respective inlet ends of the plurality of heat storage tanks20and is also connected with an outlet line of heat exchanger4.

The heat source header valve70is provided between the inlet side-heat source header50and the respective inlet ends of the plurality of heat storage tanks20. Further, the outlet side-heat source header60is connected with respective outlet ends of the plurality of heat storage tanks20and this is also connected to a heat transmitting line3.

The outlet valve of heat storage tank80is provided to respective outlet ends of the plurality of heat storage tanks20and is connected with the outlet side-heat source header60. Further, the header outlet valve81is provided between the heat source30and the outlet side-heat source header60.

The heat transmitting line3is connected between the outlet side-heat source header60and an inlet end of the heat exchanger10, thus being configured to transmit the heat medium to the heat exchanger10.

The heat transmitting pump5is provided to one side of an outlet line of heat exchanger connecting the heat exchanger10and the inlet side-heat source header50.

In addition, a temperature sensor of heat storage tank21is provided to the respective heat storage tanks20, thus being configured to measure temperatures of the heat media inside the respective heat storage tanks20.

Further, the control portion110controls to conduct a heat storage mode for the heat storage tank20of which temperature measured by the heat storage temperature sensor21is a set temperature or below (51).

As shown inFIG.2, during the heat storage mode, the control portion110operates the heat source pump40, opens the header outlet valve81, and also opens the outlet valve of heat storage tank80and heat source header valve70of a specific heat storage tank20subjected to heat storage, thus controlling the specific heat storage tank20to store heat (S2, S3).

Further, when heat storage for the specific heat storage tank20is completed, the control portion110controls to conduct a heat storage mode for another heat storage tank20of which temperature measured by the temperature sensor of heat storage tank21is a set temperature or below (54).

In addition, as shown inFIG.3, during the heat transmission mode, the control portion110suspends the operation of the heat source pump40, closes the header outlet valve81, operates the heat transmitting pump5(S5).

Further, this opens the outlet valve of heat storage tank80and heat source header valve70of a specific heat storage tank20storing heat, thus controlling the heat medium inside the specific heat storage tank20to be transmitted to the heat exchanger10(S6).

As shown inFIG.5A, when heat is transmitted to the heat exchanger10by a heat medium of this heat storage tank20, temperatures of the heat media inside the heat storage tanks20drop below as time passes by, thus temperature of the heat transmitted to the heat exchanger10also drops below.

In the first embodiment of the present disclosure, a temperature sensor111is provided in one side of the heat transmitting line3and measures temperature of a heat medium introduced into the heat exchanger10in real time.

In addition, when a value of the temperature measured in the temperature sensor111drops below the specific range from a set value, as shown inFIG.5A, the control portion110opens the outlet valve of heat storage tank80and heat source header valve70of another heat storage tank20besides the specific heat storage tank20and transmits the heat medium inside another heat storage tank20to the heat exchanger10, thus controlling temperatures of the heat media transmitted to the heat exchanger10to be maintained within the specific range (S8).

Further, as shown inFIG.1toFIG.3, the first embodiment of the present disclosure is configured to comprise a bypass valve91that is provided in one side of the outlet line of heat exchanger4, a bypass line90that connects one side of the heat transmitting line3and the bypass valve91and a bypass pump92that is provided in one side of the bypass line90.

Thus, when a value of the temperature measured in the temperature sensor111exceeds the set temperature, the control portion110operates the bypass pump92and opens the bypass valve91, thus allowing bypass of a part of the heat media discharged from the heat exchanger10to the heat transmitting line3and controlling temperatures of the heat media to be maintained within the specific range as shown inFIG.5B(S7).

Hereinafter, configurations and features of a heat transmitting system for providing a heat medium with a set temperature according to the second embodiment of the present disclosure will be described. A heat transmitting system for providing a heat medium with a set temperature100according to the second embodiment of the present disclosure has similar configurations to the aforementioned first embodiment. The heat transmission mode is the same as the first embodiment, but is different therefrom in using two heat sources. In the second embodiment, it is illustrated to apply two heat sources, however, there is no restriction to the number of the heat source.

FIG.7a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the second embodiment of present disclosure during the heat storage mode by the first heat source. In addition,FIG.8a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the second embodiment of present disclosure during the heat storage mode by the second heat source. Further,FIG.9is a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the second embodiment of present disclosure during the heat transmission mode.

The second embodiment of the present disclosure includes a first heat source31, a second heat source32that has a different temperature from that of the first heat source31. In a specific embodiment, the second heat source32has a higher temperature than that of the first heat source31.

In addition, respective heat storage tanks20are configured to store heat media heated by at least any one of the first heat source31and the second heat source32. Further, a heat exchanger10is configured to be transmitted with heat from the heat media stored in the heat storage tanks20.

Further, this includes a first heat source pump14that transmits the heat media transmitted from the first heat source31to the heat storage tanks20and a second heat source pump42that transmits the heat media transmitted from the second heat source32to the heat storage tanks20.

In addition, this is configured to include a first inlet side-heat source header51that is connected with the first heat source31and respective inlet ends of the plurality of heat storage tanks20, and a second inlet side-heat source header52that is connected with the second heat source32and respective inlet ends of the plurality of heat storage tanks20.

Further, a first heat source header valve71is provided between the first inlet side-heat source header51and the respective inlet ends of the plurality of heat storage tanks20. A second heat source header valve72is provided between the second inlet side-heat source header51and the respective inlet ends of the plurality of heat storage tanks20.

In addition, a first outlet side-heat source header61is connected with respective outlet ends of the plurality of heat storage tanks20.

Further, a second outlet side-heat source header62is connected with respective outlet ends of the plurality of heat storage tanks20. This connected with a heat transmitting pipe3and is also connected with the second heat source32.

In addition, a heat storage outlet valve80is provided to respective outlet ends of the plurality of heat storage tanks20. In the second embodiment, this outlet valve of heat storage tank80is configured as a three-way valve, thus transmitting the heat media inside the heat storage tanks20to the first outlet side-heat source header61or the second outlet side-heat source62.

Further, a header outlet valve81is provided in one side of a pipe that connects the second heat source32and the second outlet side-heat source header62.

In addition, a heat transmitting line3is connected between the second outlet side-heat source header62and an inlet end of the heat exchanger10, thus transmitting the heat medium to the heat exchanger10.

A heat transmitting pump5is provided to one side of an outlet line of heat exchanger4connecting the heat exchanger10and the second inlet side-heat source header52. As described above, temperature of the second heat source32is higher than that of the first heat source31. A temperature sensor of heat storage tank21is provided to the respective heat storage tanks20, thus being configured to measure temperatures of the heat media inside the respective heat storage tanks20.

In addition, a control portion110controls to conduct a heat storage mode for a heat storage tank20of which temperature measured by the heat storage temperature sensor21is a first set temperature or below or a second set temperature or below.

When temperature of the heat storage tank20is the first set temperature or below, as shown inFIG.7, the control portion110operates the first heat source pump41and controls the outlet valve of heat storage tank80of a specific heat storage tank20subjected to heat storage thus allowing the heat media of the heat storage tank20to be introduced into the first outlet side-heat source header61, and also opens the first heat source header valve71thus controlling the specific heat storage tank20to store heat by the first heat source31.

In addition, when temperatures of the heat media inside the heat storage tank20exceed the first set temperature and is the second set temperature or below, as shown inFIG.8, the control portion110operate the second heat source pump42and controls the outlet valve of heat storage tank80of the specific heat storage tank20subjected to heat storage thus allowing the heat media of the heat storage tank20to be introduced into the second outlet side-heat source header62, and also opens the second heat source header valve72thus controlling the specific heat storage tank20to store heat by the second heat source32.

In addition, when heat storage for the specific heat storage tank20is completed, the control portion110controls to conduct a heat storage mode for another heat storage tank20of which temperature by measured the temperature sensor of heat storage tank21is the first set temperature or below or the second set temperature or below.

The heat transmission mode is principally the same as the aforementioned first embodiment. As shown inFIG.9, the control portion110suspends the operation of the first heat source pump41and the second heat source pump42, closes the header outlet valve81, operates the heat transmitting pump5.

In addition, this controls the outlet valve of heat storage tank80of a specific heat storage tank20subjected to heat storage and also controls the second heat source header valve72to be opened. Thus, it is allowable to transmit a heat medium of the specific heat storage tank20to the heat exchanger10.

Like the first embodiment, when a value of the temperature measured in the temperature sensor111drops below the specific range from a set value, the control portion110opens the outlet valve of heat storage tank80and heat source header valve72of another heat storage tank20besides the specific heat storage tank20and transmits the heat medium inside the specific or another heat storage tank20to the heat exchanger10, thus controlling temperatures of the heat media transmitted to the heat exchanger10to be maintained within the specific range.

Further, when a value of the temperature measured in the temperature sensor111exceeds the set temperature, the control portion110operates the bypass pump92and opens the bypass valve91, thus allowing bypass of a part of the heat media discharged from the heat exchanger10to the heat transmitting line3and controlling temperatures of the heat media to be maintained within the specific range.

Hereinafter, configurations and features of a heat transmitting system for providing a heat medium with a set temperature according to the third embodiment of the present disclosure will be described.FIG.10is a configuration diagram of a heat transmitting system for providing a heat medium with a set temperature100according to the third embodiment of present disclosure.

As shown inFIG.10, the configuration of the third embodiment is principally similar to that of the aforementioned second embodiment, however, this is configured to include an inlet side-transmitting header121, an outlet side-transmitting header122, a heat transmitting valve123, an outlet valve of heat storage tank80made up of a first outlet valve of heat storage tank82and a second outlet valve of heat storage tank83, and a transmitting valve84, thus conducting the heat storage mode for heat storage tanks20which are not transmitted with heat while conducting the heat transmission mode.

As compared to the second embodiment, in the heat transmitting system for providing a heat medium with a set temperature100according to the third embodiment, as shown inFIG.10, a plurality of heat storage tanks20is provided to respective outlet ends and is configured to include a first outlet valve of heat storage tank82that is made up of a three-way valve, and a second outlet valve of heat storage tank83that is provided between respective outlet ends of the plurality of heat storage tanks20and the outlet side-transmitting header122.

Further, the third embodiment is configured to further include the inlet side-transmitting header121that is connected with a heat exchanger10and the respective inlet ends of the plurality of heat storage tanks20, and the outlet side-transmitting header122that is connected with the respective outlet ends of the plurality of heat storage tanks20.

In addition, a heat transmitting line3is connected between the outlet side-transmitting header122and an inlet end of the heat exchanger10, thus being configured to transmit a heat medium to the heat exchanger10. Further, a transmitting valve84is provided in one side of the heat transmitting line3.

Thus, during the heat storage mode according to the third embodiment, a control portion110opens a heat transmitting pump5, opens the heat transmitting valve123of a specific heat storage tank20storing heat, and controls the first outlet valve of heat storage tank82and the second outlet valve of heat storage tank83, thus controlling the heat medium inside the specific heat storage tank20to be transmitted to the heat exchanger10through the outlet side-transmitting header122.

In the heat source transmitting state, when it is necessary to store heat in a specific heat storage tank20and when temperature of the specific heat storage tank20is a first set temperature or below, the control portion110according to the third embodiment of the present disclosure operates the first heat source pump41, opens the first heat source header valve71of a heat storage tank20requiring heat storage and the first outlet valve of heat storage tank, and controls the first outlet valve of heat storage tank82, thus controlling the specific heat storage tank20to store heat.

In addition, when temperature of the specific heat storage tank20exceeds a first set temperature and is a second set temperature or below, the control portion110operates the second heat source pump42, opens the second heat source valve72of a heat storage tank requiring heat storage, and controls the first outlet valve of heat storage tank82and the second outlet valve of heat storage tank83, thus controlling the specific heat storage tank20to store heat.

Further, the configuration and method of the embodiments as described above are not restrictively applied to the aforementioned apparatus and method. The whole or part of the respective embodiments may be selectively combined so as to make various modifications of the embodiments.

FIGURE REFERENCE NUMBERS

1: a working fluid2: a heat medium3: a heat transmitting line4: an outlet line of heat exchanger5: a heat transmitting pump10: a heat exchanger20: a heat storage tank21: a temperature sensor of heat storage tank30: a heat source31: a first heat source32: a second heat source40: a heat source pump41: a first heat source pump42: a second heat source pump50: an inlet side-heat source header51: a first inlet side-heat source header52: a second inlet side-heat source header60: an outlet side-heat source header61: a first outlet side-heat source header62: a second outlet side-heat source header70: a heat source header valve71: a first heat source header valve72: a second heat source header valve80: an outlet valve of heat storage tank81: a header outlet valve82: a first outlet valve of heat storage tank83: a second outlet valve of heat storage tank84: a transmitting valve90: a bypass line91: a bypass valve92: a bypass pump100: a heat transmitting system for providing a heat medium with a set temperature110: a control portion111: a temperature sensor121: an inlet side-transmitting header122: an outlet side-transmitting header123: a heat transmitting valve