Abstract: The stream of suction gas and entrained oil flowing from the evaporator in a parallel compressor refrigeration system is directed into a flow separator where it diverges and is expanded into a separation chamber of increased cross-sectional area. A takeoff conduit has an inlet end disposed generally in the center of the separation chamber which faces into the suction gas flow stream. Because of the location and size of the cross-sectional area of the inlet end of the takeoff conduit, a larger portion of the suction gas flow stream and oil entrained therein bypasses the takeoff conduit inlet than enters it. The separation chamber is in flow communication, at its outlet end, with the shell of the one of the compressors which is designated to receive a majority of the suction gas and oil entrained therein. The takeoff conduit is in flow communication with the other of the compressors.

Abstract: The present invention relates to a refrigeration system of the type having an air cooled condenser which includes the further capability of producing a heated liquid in a liquid cooled or, "heat recovery" condenser. The system includes compressor means for compressing a vaporized refrigerant, air cooled condenser means having fan means for forcing air in heat exchange relationship therewith, liquid cooled condenser means for producing a heated liquid, and evaporator means for expanding and vaporizing condensed refrigerant in heat exchange relationship with a refrigeration load. Control means are provided for the system and include first means for sensing the demand for heated liquid from the liquid cooled condenser, and second means responsive to the first means for reducing the capacity of the fan means in response to increased demand for heated liquid.

Abstract: The present invention relates to a refrigeration system of the type having an air cooled condenser which includes the further capability of producing a heated liquid in a liquid cooled or, "heat recovery" condenser. The system includes compressor means for compressing a vaporized refrigerant, air cooled condenser means having fan means for forcing air in heat exchange relationship therewith, liquid cooled condenser means for producing a heated liquid, and evaporator means for expanding and vaporizing condensed refrigerant in heat exchange relationship with a refrigeration load. Control means are provided for the system and include first means for sensing the demand for heated liquid from the liquid cooled condenser, and second means responsive to the first means for reducing the capacity of the fan means in response to increased demand for heated liquid.