30 May 2005

HEAT PUMPING USING COMBINED HEAT AND POWER TECHNOLOGY

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Since 2001, the United States Department of Energy (DOE) has made a significant shift in
focus for development and use of Thermally Activated Heat Pumping Technologies. DOE is
working with partners from the heating and cooling industry and the power generation industry to
develop Integrate Energy Systems (IES) using advanced thermally driven heat pump technologies
for building heating and cooling by recycling otherwise wasted heat from electric generating
equipment.
Key activities include heat driven lithium-bromide water absorption chillers matched with
power generation to make Integrated Energy Systems (IES); ammonia-based residential and light
commercial absorption technology for refrigeration, heat pumps and chillers; and advanced “hicool”
heat pump technology. Opportunities for further advancements in thermally activated
technologies exist, particularly for expanding integration of energy systems through combined
cooling, heating and power applications capable of achieving overall energy efficiency
approaching or exceeding 80%.