High latent refrigerant control circuit for air conditioning sys

Details High latent refrigerant control circuit for air conditioning sys High latent refrigerant control circuit for air conditioning sys

1995-08-30

1997-04-22

Tanner, Harry B.

Refrigeration

Automatic control

Of external fluid reheating

621765, 621766, F25B 4104

Patent

active

056220570

ABSTRACT:
A high latent cooling control assembly for a compression-expansion air conditioning system employs a subcooler coil disposed in the leaving air side of the indoor air evaporator coil. A liquid line branch supplies condensed liquid refrigerant from the condenser to the subcooler coil, and a flow restrictor, which can be a TXV, drops the sub-cooled liquid pressure before the refrigerant reaches the expansion device associated with the evaporator coil. A bypass line connects the condenser to the expansion device, and has a liquid line solenoid valve that is humidistat actuated. When dehumidification is called for, the solenoid is closed and refrigerant flows through the subcooler coil. When the humidistat is satisfied, the solenoid opens and the refrigerant path bypasses the subcooler coil. The high latent subcooler assembly can be field-installed or retrofitted onto an existing air conditioner.

REFERENCES:
patent: 3257822 (1966-06-01), Abbott
patent: 3264840 (1966-08-01), Harnish
patent: 3798920 (1974-03-01), Morgan
patent: 4984433 (1991-01-01), Worthington
BDP Company, Engineering Data Release for Model 542E Packaged Heat Pump, (pp. 2 and 5). Aug. 1979.
"Heat Pipes Can Enhance Air Conditioning Systems," Air Conditioning, Heating & Refrigeration News, Jun. 5, 1995.

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