Frosting heat-pump dehumidifier with improved defrost

Details Frosting heat-pump dehumidifier with improved defrost Frosting heat-pump dehumidifier with improved defrost

1998-08-18

2000-02-08

Tanner, Harry B.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62156, 62140, 62278, 62 93, F25D 2106

Patent

active

060216441

ABSTRACT:
A reverse cycle refrigeration apparatus for air dehumidification is employed having an evaporator and a condenser and employing first and a second heat transfer coils for this purpose. Both coils are positioned in the air stream. In a first cycle the second coil functions as the evaporator for cooling and dehumidifying the air stream and accumulating frost and the first coil acts as the condenser, warming the cooled and dehumidified air stream and thawing frost having accumulated on it. In a second cycle the first coil acts as the evaporator, cooling and dehumidifying the air and providing the heat for defrost and the second coil acts as the condenser, thereby being defrosted. Dampers are provided for stopping air flow over the defrosting coil.

REFERENCES:
patent: 2481348 (1949-09-01), Ringquist et al.
patent: 2968167 (1961-01-01), Raney
patent: 3529436 (1970-09-01), Brennan
patent: 3572052 (1971-03-01), Toth
patent: 4178767 (1979-12-01), Shaw
patent: 4917174 (1990-04-01), Ring
patent: 4928498 (1990-05-01), Gossler
patent: 5890368 (1999-04-01), Lakdawala

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