Cross critical CO2/R22 heat pump air conditioner and hot water triple feeding method

Abstract

The invention pertains to the technical field of the combined application of indoor air-conditioning and hot water circulation. The transcritical CO2 / R22 heat pump air-conditioning and hot water three combination supplying method of the invention is that a three-way valve (A) and a three-way valve (B) are respectively connected with a transcritical CO2 heat pump system and an R22 air-conditioning cooling system; then a pump is adopted to connect a heat storing tank so as to realize the switch between the two systems and the combination of three operating modes of the transcritical CO2 heat pump circulation system, the R22 air-conditioning circulation system and the hot water circulation. The combined application of indoor air-conditioning and hot water circulation of the invention makes full use of the advantages of the two separate systems to make up for the disadvantage of each system, which can not only meet the refrigeration requirement in summer and the requirement for hot water of the whole year, but also meet the demand on heating and hot water supplying in winter; at the same time, the invention has the advantages of environment protection, large potential of energy saving, compact structure as well as improving the utilization rate of equipment.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning heat pumps, and relates to a conventional refrigerant (R22) refrigeration cycle and transcritical CO 2 Combined operation method of heat pump cycle. Background technique [0002] Due to the increasingly serious environmental problems such as global warming and climate anomalies, environmental protection and energy conservation have become a major and urgent issue for the entire international community. [0003] At present, the freon household heat pump air conditioning system widely used in summer has a large amount of heat released by the outdoor condenser, and the higher the outdoor temperature, the lower the cooling efficiency and the higher the energy consumption; At that time, the heating efficiency of the heat pump was very low, and it was necessary to increase the auxiliary electric heating device to meet the demand, and the energy consumption also increased greatly; in addition, ...

AI Technical Summary

Problems solved by technology

From 1866 to the 1930s, the carbon dioxide subcritical cycle was widely used, but due to its low efficiency, high system working pressure, and high mechanical strength requirements for equipment, it was replaced by the later Freon system

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