Air conditioner cycle phase change refrigeration system and refrigeration method, and air conditioner

Abstract

The invention discloses an air conditioner cycle phase change refrigeration system and refrigeration method and an air conditioner. The air conditioner cycle phase change refrigeration system includesa pressure gas source, at least two storage tanks arranged in parallel, and an air conditioning heat exchanger; the storage tanks are respectively connected to pressure gas source to alternately leadin high-pressure gas to control the pressure in the storage tanks; and the air conditioning heat exchanger is connected to the storage tanks separately to alternately receive a liquid cooling mediumprovided by the storage tanks for heat exchange and refrigeration; wherein the storage tanks alternately receive the gaseous cooling medium after heat exchange by the air conditioning heat exchanger,and convert the gaseous cooling medium into the liquid cooling medium for cyclic utilization under the pressurization and heat exchange of the high-pressure gas. According to the air conditioner cyclephase change refrigeration system and refrigeration method disclosed by the invention, the thermal effect of CO<2> liquid-gas and gas-liquid phase changes is used for cooling down the air conditioning heat exchanger; and a plurality of storage tanks are used for performing circulation recycling on the cooling medium, which meets the continuous refrigeration requirements of the air conditioning heat exchanger and improves the heat exchange efficiency and carbon dioxide recovery efficiency.

Description

technical field [0001] The invention relates to the technical field of air-conditioning and refrigeration, in particular to an air-conditioning cycle phase-change refrigeration system, a refrigeration method and an air conditioner. Background technique [0002] The impact of existing conventional refrigerants on the environment is mainly manifested in the destruction of the ozone layer and the greenhouse effect. The destruction of the ozone layer and the greenhouse effect are manifested in the continuous reduction of ozone content and the continuous increase of greenhouse gas concentration, which will have a huge impact on the environment in which humans live, and even have catastrophic consequences. As a natural medium, carbon dioxide has a high latent heat of vaporization, so the amount of carbon dioxide used is small and the heat exchange efficiency is high. The refrigeration system using carbon dioxide as a refrigerant has been widely used and is an ideal refrigeration s...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the carbon dioxide transcritical cycle is that the throttling loss is large, and the efficiency is lower than that of the conventional refrigerant cycle.

In addition, since the high-pressure supercooled carbon dioxide at the outlet of the condenser is throttled in the throttling device, it will produce low-pressure carbon dioxide mixed with gas-liquid two-phase. After entering the evaporator, the gaseous carbon dioxide will no longer evaporate and exchange heat, and occupy A large amount of space leads to a decrease in the evaporation efficiency of liquid carbon dioxide in the evaporator, a large throttling loss, and an increase in the suction superheat of the compressor, resulting in an increase in power consumption and a decrease in the energy efficiency of the whole machine

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