This effect may be accomplished either with or without the assistance of an external pump. In addition, it is possible to connect the CPL to an external heat source or sink so that it functions as the secondary heat transfer loop to distribute heat to or from the body. The principal development issues will relate to the heat transfer interface with the human body. Capillary Pumped Loops can be made as discrete components from inexpensive materials. The application is a relatively easy adaptation of existing technology.
Benefits Reduced insulation requirements can make clothing less bulky and restrictive.
Application to hand warming will allow improved dexterity and tactility. Elimination of mechanical pumps to distribute the fluid will result in lighter weight systems. CPLs could also be used as part of body cooling systems that use an external heat sink. Cooling garments for medical conditions such as multiple sclerosis. The GSFC Thermal Systems Branch has initiated a pilot demonstration project for glove warming, and a patent application has been filed.