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Personal Heating Unit Component Assembly Aspen Thermal has developed for the U.S. Army a Personal Heating System to provide auxiliary heat to individuals in cold environments. The system contains a miniature combustor that burns propane gas to heat a circulating antifreeze solution. The propane is provided in a disposable cartridge that can produce 250 W for four hours. A rechargeable battery provides more than eight hours of power to the circulating pump and digital electronic control system.
The control system maintains the circulating fluid at the user-selected set point by regulating the fuel pressure delivered to the combustor. The heated antifreeze solution is circulated through a tube-lined garment worn close to the skin by the user. An electronic ignitor provides a completely automated system. |
