Refrigeration system with hot gas pre-cooler

Details Refrigeration system with hot gas pre-cooler Refrigeration system with hot gas pre-cooler

1986-06-11

1987-10-27

King, Lloyd L.

Refrigeration

Processes

Transferring heat between diverse function portions of...

62117, 62200, 62513, F25B 4100

Patent

active

047020865

ABSTRACT:
A refrigeration system is disclosed having greatly improved efficiency. The system includes a pre-cooler heat exchanger for sub-cooling the refrigerant hot gas from the compressor before entering the condenser to render the entire evaporator more effective for refrigeration purposes. The heat exchanger for pre-cooling the hot gas has one passage through which the hot gas flows and another passage, in heat exchange relation therewith, which is connected to receive a small flow of liquid refrigerant bled off from the main stream of the liquid refrigerant which refrigerant passes through an expansion valve or capillary tube to vaporize so that the refrigerant hot gas is sub-cooled by the latent heat of vaporization of the vaporizing refrigerant. This heat exchanger is located between the compressor and the condenser. The flow of the vaporized refrigerant used for cooling in the heat exchanger is connected to the return flow of vaporized refrigerant flowing from the evaporator to the compressor. This heat exchanger may be used alone or in combination with a direct expansion liquid refrigerant pre-cooler as disclosed in U.S. Pat. No. 4,577,468.

REFERENCES:
patent: 2022774 (1935-12-01), Kucher
patent: 2385667 (1945-09-01), Webber
patent: 4359879 (1982-11-01), Wright
patent: 4577468 (1986-03-01), Nunn, Jr. et al.

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