Refrigeration – Processes – Circulating external gas
Patent
1996-02-06
1997-09-09
Wayner, William E.
Refrigeration
Processes
Circulating external gas
621961, 62DIG2, F25B 900, F25B 4100
Patent
active
056644256
ABSTRACT:
A reheater is used in air-conditioning system which includes a compressor, a condenser, an expansion valve, and an evaporator, interconnected by conduits in a closed loop. A first conduit coupling a flow of liquid refrigerant through the expansion valve into the evaporator. A second conduit coupling an outlet of the evaporator to an inlet of the compressor. A third conduit coupling an outlet of the compressor to an inlet of the condenser. A centrifugal pump is coupled to an outlet of the condenser for boosting a pressure of the condensed liquid refrigerant by an incremental pressure sufficient to pressure subcool the refrigerant. A reheater is positioned adjacent to the evaporator and coupled to an outlet of the centrifugal pump, for receiving pressure subcooled liquid refrigerant and cooled air from the evaporator to further subcool the liquid refrigerant to a temperature below its condensing temperature and to effect a partial reheating of the cooled flow of air thereby decreasing the relative humidity of the flow of the air. A reheater bypass conduit coupled between an inlet of the evaporator and the outlet of the pump. A bypass control valve positioned on the reheater bypass conduit for controlling the flow of liquid between the outlet of the pump and the inlet of the evaporator. A solenoid, coupled to the bypass control valve for actuating the valve. A controller, electronically coupled to the solenoid, capable of receiving humidity and temperature data and being programmed to actuate the solenoid in response to the data.
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