In the proposed system configuration, the air-geothermal heat exchanger is utilized ... presented last year a 5 kW direct-expansion solar-assisted heat pump that uses alternatively two different ...

Over the next two years, homebuilder Lennar is working with Dandelion Energy on one of the largest residential geothermal rollouts in the US.

These underground reservoirs of steam and hot water can be tapped to generate electricity or to heat and cool buildings directly. A geothermal heat pump system ... savings from direct use can ...