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专利名称：Geothermal heat pump system发明人：JOHN GENUNG,FRANK K. CARPENTER申请号：AU7720398申请日：19980528公开号：AU7720398A公开日：19991213
摘要：A geothermal heating and/or cooling system includes one or more of a pluralityof features that enhance the efficiency of the system. Preferably, the system includes asubterranean heat exchanger having tubes disposed against a conductive sheet. Thesystem also preferably includes a reservoir vessel for holding a supply of heat transferfluid in a liquid phase. Also, the system preferably includes heat exchange means forexchanging heat between the heat transfer fluid and the outdoor air. In addition, thesystem preferably has an automatically adjusting cooling expansion valve controlled by asensor disposed to detect the pressure or temperature of heat transfer fluid exiting anindoor air handler in a cooling mode, the system also preferably has an automaticallyadjusting heating expansion valve controlled by a sensor that is preferably located so asto detect the temperature or pressure of heat transfer fluid flowing from thesubterranean heat exchanger to a gas compressor. The enhancements may be usedindividually or in various combinations.
申请人：ENVIROTHERM HEATING & COOLING SYSTEMS, INC.
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