Heat exchange – Non-communicating coaxial enclosures – With communicating coaxial enclosure
Patent
1995-06-16
1998-01-13
Sollecito, John M.
Heat exchange
Non-communicating coaxial enclosures
With communicating coaxial enclosure
165 45, 165103, 62260, F21B 3500
Patent
active
057068887
ABSTRACT:
A heat exchanger and heat pump circuit having an operating subcircuit and a pump down subcircuit each including a liquid line and a heat transfer tube. The heat transfer tube of the pump down subcircuit surrounds the liquid line of the operating subcircuit. During the heating cycle, the heat pump circuit circulates refrigerant through both subcircuits to abstract heat from the heat source/sink. However, during the cooling cycle, the heat pump circuit circulates refrigerant only through the operating subcircuit. Also during the cooling cycle, the heat pump circuit places the pump down subcircuit at low pressure to thermally insulate the operating subcircuit liquid line.
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Ambs Rex K.
Kiessel Thomas G.
Geofurnace Systems, Inc.
Sollecito John M.
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