Thermoelectric powered heating and ventilating system

The prime purpose of this investigation was to develop a self-powered system which provides either heating or ventilating for a man operating in extreme climatic environments or enemy imposed hazards. The electrical power required to perform this function is supplied by a thermoelectric energy conversion. The thermoelectric power is unique in that it is forced convection cooled, completely self-powered, operates from liquid fuels, and used bismuth-telluride as the thermoelectric energy conversion material. The overall system is man portable and contains fuel for eight hours operation in a manually pressurized fuel tank, allowing operation in any position. The 15.7 lb. fully fueled system delivers 18 c.f.m, of air at 4 in. static water pressure or 28 watts of net d-c electrical power to an external load. The air delivered by the system is capable of being temperature regulated from 150°F to 5°F above the ambient conditions.