A non-azeotropic working medium heat pump system with adjustable concentration and its operation method
A heat pump system, non-azeotropic technology, applied in heat pumps, lighting and heating equipment, fluid circulation arrangements, etc., can solve the problems of low air outlet temperature, insufficient heating capacity, low energy efficiency, etc., to improve evaporation temperature and realize capacity adjustment. , the effect of improving the heating capacity
Active Publication Date: 2017-04-19
TSINGHUA UNIV
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Problems solved by technology
[0005] In fact, air source heat pumps (the most common form is heat pump household air conditioners) have been used in the above areas in the early stage, but due to insufficient heating capacity in low temperature conditions (users feel that the outlet air temperature is low) and low energy efficiency (users feel that it is Large power consumption) has led to its not being used on a large scale
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[0028] The principle structure diagram and operation mode of the present invention will be further described below in conjunction with the accompanying drawings.
[0029] figure 1 It is the system schematic diagram of the non-azeotropic working fluid heat pump system with adjustable concentration disclosed by the present invention. The system includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a flow direction switching device 4, a liquid storage regenerator 5, a system expansion valve 6, and an indoor heat exchanger 7; the flow direction switching device 4 includes a first A one-way valve 41, a second one-way valve 42, a third one-way valve 43 and a fourth one-way valve 44; the heat recovery coil 9 is arranged in the liquid storage regenerator 5; the compressor exhaust port 1b and four The one-way valve exhaust interface 2a is connected; the four-way valve outdoor heat exchanger interface 2b is connected to the inlet of the first one-way valve 41 and th...
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The invention discloses a non-azeotropic working medium heat pump system with adjustable concentration and its operation method. The system mainly includes a compressor, a four-way valve, an outdoor heat exchanger, a flow direction switching device, a component regulating device, and a system expansion valve. and an indoor heat exchanger; the invention can realize multiple functions such as quasi-two-stage compression, liquid spraying and system working medium concentration adjustment by adding component control devices, component separation tanks and corresponding connecting pipes and valves. Through the comprehensive application of non-azeotropic working fluid, air supply, liquid injection and component concentration adjustment technology, the heat pump system can increase the heating capacity and COP of the heat pump in low temperature conditions, improve the seasonal energy efficiency level of the heat pump device, and effectively control the compression The exhaust temperature of the engine at low temperature.
Description
technical field [0001] The invention relates to a non-azeotropic working medium heat pump system and its operating method, in particular to a non-azeotropic working medium heat pump system with adjustable concentration and its operating method, belonging to the technical field of heat pump air conditioning. Background technique [0002] my country's building energy consumption accounts for about 1 / 3 of the total energy consumption of social commodities, among which, heating in northern towns alone consumes more than 25% of the total energy consumption of buildings in the country. At the same time, with the rapid development of my country's urbanization and the improvement of people's living standards, new heating needs continue to emerge. [0003] my country's Yangtze River Basin has a vast territory and a large population. The Yangtze River Basin is located in the climate zone of hot summer and cold winter, and the winter is humid and cold. Affected by living habits, resi...
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IPC IPC(8): F25B30/02F25B41/04F25B41/06F25B49/02F25B41/20F25B41/31
CPCF25B30/02F25B49/02F25B41/20F25B41/31
Inventor 王宝龙李先庭石文星刘星如
Owner TSINGHUA UNIV