March 16, 2022
The company develops a transcritical carbon dioxide heat pump water heater, including: transcritical carbon dioxide heat pump system, hot water supply system and heating circulation system; The trans-critical carbon dioxide heat pump system comprises a compressor, a first gas cooler, a second gas cooler, a regenerator, an expansion valve, an evaporator and a regenerator which are arranged on the first circulating pipeline in turn The hot water supply system comprises a water tank, a first water pump and a hot water outlet valve. The water tank comprises a high temperature zone A, a medium temperature zone B and a low temperature zone C, the heating circulation system comprises a second air cooler, a second water pump and a terminal device located on the second circulation pipeline. The invention reduces the temperature of the carbon dioxide at the inlet of the expansion valve, improves the superheat of the carbon dioxide at the inlet of the compressor, improves the EER of the heat pump circulation, and ensures that the water entering the air cooler from the water tank has a lower temperature, the temperature of the first air cooler is lowered to improve the efficiency of the heat pump system, and high or medium temperature water can be provided according to the user’s requirements.