US PATENT SUBCLASS 62 / 118
.~ Pumping fluid in closed circuit


Current as of: June, 1999
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62 /   HD   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.