US PATENT SUBCLASS 62 / 118
.~ Pumping fluid in closed circuit
Current as of:
June, 1999
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62 /
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REFRIGERATION
56
DF
PROCESSES
{28}
118
.~ Pumping fluid in closed circuit
DEFINITION
Classification: 62/118
(under subclass 56) Processes wherein a fluid is pumped in a closed circuit, absorbing and rejecting heat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86+, in which pressure is reduced on a gas, the gas remaining as such during the cooling operation.
89+, and 98+, for processes involving circulation of an external fluid.
115+, for processes involving compressing, condensing and evaporating.
430+, particularly subclass 435 for apparatus utilizing an intermediate heat transfer fluid.