A rectification column type variable concentration non-azeotropic working fluid heat pump system and its operation method

Abstract

The invention discloses a rectifying tower type variable concentration non-azeotropic working medium hot pump system and a running method, and belongs to the technical field of a hot pump air conditioner. The system mainly includes a compressor, a four-way valve, an outdoor heat exchanger, a flow direction switching device, a component regulating device, a stored fluid heat regenerator, a system expanding valve, an indoor heat exchanger, a three-way valve and a corresponding linking pipe. Through arranging the component separating tank, the system storage fluid heat regenerating tank, the corresponding linking pipe and the valve, the quasi-secondary-grade compression, fluid injection, concentration adjustment of system working medium and other functions can be realized. Through the comprehensive application of non-azeotropic working medium, gas supplementation, injection and component concentration adjusting technology, the hot pump system can improve the heating amount and COP of the hot pump under the low temperature condition, increase the seasonal efficiency level of the hot pump device, and effectively control the exhaust temperature of the low-temperature condition of the compressor.

Description

technical field [0001] The invention relates to a non-azeotropic working medium heat pump system and an operating method thereof, in particular to a variable-concentration non-azeotropic working medium heat pump system and an operating method thereof, 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 them, heating in northern cities and 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 l...

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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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