Vapor cycle cooling system having a compressor rotor supported w

Details Vapor cycle cooling system having a compressor rotor supported w Vapor cycle cooling system having a compressor rotor supported w

1990-07-10

1991-09-03

Makay, Albert J.

Refrigeration

Processes

Compressing, condensing and evaporating

62505, 184 616, 384120, F25B 100

Patent

active

050441671

ABSTRACT:
A refrigeration system (300) having a compressor (12) with a rotor (20) rotatably supported by a plurality of hydrodynamic bearings (22, 24) lubricated by oiless pressurized liquid refrigerant and pressurizing refrigerant which flows to a condenser (34) providing liquid refrigerant which flows to an evaporator (68) in fluid communication with the condenser and the compressor in accordance with the invention includes a first refrigerant circuit (302), coupled to the compressor, for providing pressurized liquid refrigerant to the hydrodynamic bearings from the compressor without flow through a subcooler; and a second refrigerant circuit (304), coupled to the hydrodynamic bearings and to the evaporator including at least one subcooler (42 and 44), for providing a flow of refrigerant from the hydrodynamic bearings through the at least one subcooler to the evaporator, the at least one subcooler cooling the refrigerant flowing between the hydrodynamic bearings and the evaporator.

REFERENCES:
patent: 3221984 (1965-12-01), Ditzler
patent: 4598556 (1986-07-01), Mokadam
patent: 4809521 (1989-03-01), Mokadam
"A New Technology in Energy-Efficient Electrically Driven Aircraft Environmental Control Systems", authored by W. Cloud, J. McNamara and David B. Wigmore, presented at the 21st IECEC Conference, Aug. 25-29, 1986, Article #869390 American Chemical Society, pp. 1696-1702.

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