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precooler

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precooler [prē′kül·ər]
(mechanical engineering)
A device for reducing the temperature of a working fluid before it is used by a machine.


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The saturated ammonia liquid from the condenser (16) get subcooled in the condensate precooler (RHX) (17) and then enters into the evaporator in a two-phase cooled mixture (18) through an expansion valve that reduces the pressure of the refrigerant to the evaporator pressure.
It is a heat pump system consisting of a two-stage rotary compressor, an oil separator, a preheater, a precooler, a gas cooler, four expansion valves, a test section, an auxiliary evaporator, and an accumulator.
One of the unique features of the control system is its two large flat-panel displays of the Precooler temperatures that are large enough for the fork lift drivers to see as they zip by.
 
 
 
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