Method for defrosting a refrigeration system

Details Method for defrosting a refrigeration system Method for defrosting a refrigeration system

1980-10-02

1981-12-01

Capossela, Ronald C.

Refrigeration

Processes

Defrosting or frost inhibiting

F25B 4100

Patent

active

043029450

ABSTRACT:
Apparatus and a method for operating a refrigeration system without reverse cycle defrost are disclosed. A heat exchanger is divided into a plurality of zones, one zone being constantly utilized as a subcooler to both defrost said zone and to subcool the refrigerant. The remaining zones of the heat exchanger are utilized as an evaporator as is known in the art. A selector valve which is capable of indexing liquid refrigerant flow between zones and receiving gaseous refrigerant from the remaining zones is also disclosed. Additionally, a header arrangement having both expansion means and a conduit controlled by check valve is utilized to direct refrigerant flow from the subcooled zones to the remaining zones of the heat exchanger which act as an evaporator.

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