Closed loop energy exchange system
Closed loop geothermal heat exchanger
Conditioning the air in a structure utilizing a gravel heat...
Cooling pond enhancement
Corrugated heat pipe
Device and process for the heat insulation of at least one...
Device for absorbing heat from the earth
Device for the protection against freezing of installations for
Direct contact, binary fluid geothermal boiler
Double-pipe geothermal water circulating apparatus
Down-pumping heat pipes
Drilled well series and paralleled heat exchange systems
Earth coupled thermal barrier system
Earth energy sink
Earth heat exchange system
Earth loop energy systems
Earth-type heat exchanger for heat pump system
Earth/block air preconditioner
Encasement assembly for installation of sub-surface...
Energy efficient housing structure