Methods and apparatus for operating a refrigeration system

Details Methods and apparatus for operating a refrigeration system Methods and apparatus for operating a refrigeration system

1991-08-23

1992-12-29

Sollecito, John

Refrigeration

Processes

Transferring heat between diverse function portions of...

62222, 62513, 62278, 623231, F25B 4100

Patent

active

051741237

ABSTRACT:
Methods and apparatus for eliminating the need for a float valve in a flash tank of a refrigeration system having an economizer cycle, improving stationary refrigeration systems and permitting a flash tank instead of a heat exchanger to be used in a transport refrigeration system having an economizer cycle. The refrigeration system includes a refrigerant compressor, a condenser, and an evaporator, with the flash tank being disposed between the condenser and evaporator. A liquid sub-cooling valve is disposed between the condenser and flash tank. The liquid sub-cooling valve opens and closes to maintain a desired degree of sub-cooling, with the liquid sub-cooling valve thus controlling refrigerant flow into the flash tank. Refrigerant flow out of the flash tank to the evaporator is controlled by a suction superheat thermostatic expansion valve. In a preferred embodiment, liquid leaving the flash tank is sub-cooled before entering the expansion valve.

REFERENCES:
patent: 2590061 (1952-03-01), Ash
patent: 4259848 (1981-04-01), Voight
patent: 4773234 (1988-09-01), Kann

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