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

A heat pump air conditioner and transcritical technology, applied in the field of air conditioner heat pump, can solve the problems of high mechanical strength requirements, low efficiency and high system working pressure of equipment, and achieve the effects of improving utilization rate, low energy consumption and high refrigeration efficiency

Inactive Publication Date: 2008-11-12
UNIV OF SHANGHAI FOR SCI & TECH
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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

Method used

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

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specific Embodiment approach

[0022] The method of the present invention is by combining transcritical CO 2 Heat pump cycle system, R22 air conditioning cycle system and hot water cycle system to achieve the purpose of the invention. The specific method is: if figure 1 As shown, A hot water heat exchanger (11) and indoor air heat exchanger (7) are connected in parallel, and one end is connected to the outlet of the carbon dioxide compressor (8), and the other end is connected to the outdoor air for heat exchange after passing through the throttle valve (12). device (5), and then connected to the carbon dioxide compressor (8) in series with the liquid reservoir (13) to form a transcritical carbon dioxide heat pump circulation pipeline; another B hot water heat exchanger (4) and the outdoor air heat exchanger ( 5) Connect to the outlet of the R22 compressor (1) after parallel connection, and the other end is connected to the indoor air heat exchanger (7) through the throttle valve (6), and then connected to...

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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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B30/02F24F1/00F24D17/02F24H4/02
CPCY02B30/12
Inventor 吕静王伟峰周传煜
Owner UNIV OF SHANGHAI FOR SCI & TECH
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