Reverse cycle refrigeration system

Claim 1

A REVERSIBLE REFRIGERATION SYSTEM HAVING A COOLING CYCLE AND A HEATING CYCLE, COMPRISING A COMPRESSOR HAVING DISCHARGE AND SUCTION SIDES, AN EVAPORATOR LOCATED IN A SPACED TO BE CONDITIONED HAVING AN OUTLET SELECTIVELY CONNECTIBLE TO THE COMPRESSOR SUCTION SIDE DURING THE COOLING CYCLE AND TO THE COMPRESSOR DISCHARGE SIDE DURING THE HEATING CYCLE, A SINGLE HEAT TRANSFER DEVICE OF THE FIN AND TUBE TYPE EXPOSED TO AMBIENT TEMPERATURES IN A ZONE OUTSIDE SAID SPACE HAVING FIRST AND SECOND INDEPENDENT SETS OF CONDUIT COILS AND PLURAL HEAT TRANSFER FINS DEFINING A FIN BUNDLE FOR SAID DEVICE WITH THE FINS DISPOSED IN HIGHLY THERMALLY CONDUCTIVE PHYSICAL CONTACT WITH THE COILS OF BOTH SAID SETS FORMING THE EXTENDED SURFACES THEREOF WHEREBY SAID FIN BUNDLE IS SHARED BY BOTH SAID SETS OF COILS, SAID FIRST SET OF COILS FORMING CONDENSING COILS DURING THE COOLING CYCLE FOR CONDENSING COMPRESSED REFRIGERANT VAPOR SUPPLIED THERETO AND SAID SECOND SET OF COILS FORMING HEAT SOURCE COILS DURING THE HEATING CYCLE FOR VAPORIZING LIQUID REFRIGERANT SUPPLIED THERETO BY EXTRACTING HEAT FROM SAID ZONE, A FIRST REFRIGERANT FLOW CIRCUIT INCLUDING SAID FIRST SET OF COILS SELECTIVELY INTERCONNECTED BETWEEN THE COMPRESSOR DISCHARGE SIDE AND THE INLET OF THE EVAPORATOR DURING ONLY THE COOLING CYCLE, A SECOND REFRIGERANT FLOW CIRCUIT INCLUDING SAID SECOND SET OF COILS SELECTIVELY CONNECTED BETWEEN THE INLET OF THE EVAPORATOR AND THE COMPRESSOR SUCTION SIDE DURING THE HEATING CYCLE TO VAPORIZE ANY LIQUID REFRIGERANT RETURNING FROM THE EVAPORATOR TO THE COMPRESSOR, AND MEANS FOR DISCONNECTING THE INLET OF THE CONDENSER FROM THE COMPRESSOR DISCHARGE SIDE DURING THE HEATING CYCLE.