volute cone 50 can occur and be in addition to the injection of liquid refrigerant into the upstream portion of passage 48 as is illustrated in phantom by piping 52 additionally but not illustrated such liquid refrigerant injection could occur within conduit 20 which connects volute cone 50 of compressor portion 12 to condenser 14 referring additionally now to drawing fig4 and 6 alternative embodiments of the present invention will be described in the embodiment of fig4 and 5 conduit 38 pump 40 conduit 42 distribution conduit 34 and nozzles 46 are dispensed with and compressed refrigerant gas is directed from compressor portion 12 through piping 20 which connects the discharge volute of the compressor to condenser 14 in the fig4 and 5 embodiment compressed discharge gas is directed out of connecting piping 20 and into condenser 14 through distribution manifold 100 which is disposed in the liquefied system refrigerant pooled in sump 102 in the lower portion of condenser 14 manifold 100 defines apertures 104 through which the refrigerant gas discharged from the system condenser 14 is injected into the liquid refrigerant pooled in sump 102 in this arrangement the advantage of additional and direct heat transfer between the incoming refrigerant discharge gas and the condensed system refrigerant interior of the condenser is realized refrigerant not directly condensed in the process.