Abstract: An air conditioning apparatus includes a refrigerant tank, a cryogenic liquid pump, a condensing evaporator, a compressor, a user system, a throttle valve, a first reversing valve, and a second reversing valve. It operates in two modes. In the first mode, the refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the compressor, the second reversing valve, the user system, the first reversing valve, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank. In the second mode, refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the second reversing valve, the user system, the first reversing valve, the compressor, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank.

Abstract: The present invention is comprised of a heat supply circulation circuit: the liquid refrigerant from the refrigerant tank, after being boosted by the cryogenic liquid pump, enters the condensing evaporator, to transfer the cold to the backflow refrigerant at a higher temperature, after increasing pressure and temperature via the compressor, it is sent to the user system to supply heat, the refrigerant gas from the user system enters the condensing evaporator, and returns via the throttle valve to the refrigerant tank; and a cold supply circulation circuit: the liquid refrigerant from the refrigerant tank, after boosting by the cryogenic liquid pump, enters the condensing evaporator, to transfer the cold to the backflow refrigerant in the cold recovery channel, the refrigerant, after releasing the cold energy with increased temperature, flows to the user system to supply cold, the refrigerant gas from the user system returns via the compressor, condensing evaporator, and throttle valve to the refrigerant tank.