DOE EERE Research Reports

Thermally Activated Heat Pumps

Thermally Activated (Heat Activated) Absorption Heat Pumps and Absorption Chillers

Absorption heat pumps are thermally activated (heat activated) and use heat, instead of an electrically driven compressor, to produce chilled water for air conditioning and refrigeration. The Department of Energy (DOE) has funded work on the development of:

Projects have included water-cooled and air-cooled absorption heat pumps, absorption heat pump working flluids, and absorption heat pump cycle modeling. Much of the early work was directed toward thermally activated (heat activated) systems that used a natural gas burner to generate the refrigerant vapor. In 2000, research focused more attention on redesign of generators of thermally activated absorption heat pumps for use in waste heat fired systems using recovered heat from engine driven generators in combined cooling, heating and power systems.



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