Circulation of oil in refrigeration systems with immiscible refr

Details Circulation of oil in refrigeration systems with immiscible refr Circulation of oil in refrigeration systems with immiscible refr

1994-06-20

1995-09-26

Wayner, William E.

Refrigeration

Processes

Lubricant handling

62471, F25B 4302

Patent

active

054525853

ABSTRACT:
In a refrigeration or air-conditioning process, a method applicable to the replacement of potentially ozone-depleting oil-miscible refrigerants such as R-12 with non-ozone-depleting oil-immiscible refrigerants such as R-134a, wherein a conventional expansion device is replaced by a self-regulating pulsed nozzling device for pulsed circulation of the immiscible oil in the new refrigerant to create accelerated intermittent high velocity bursts of substantially unrestricted refrigerant flow imparting sufficient momentum to move the oil with the refrigerant through all stages of the process.

REFERENCES:
patent: 1314234 (1919-08-01), Wolf
patent: 1768603 (1930-07-01), Hull
patent: 4715196 (1987-12-01), Sugiura
patent: 5355695 (1994-10-01), Kawaguchi et al.

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