An Improved Vapor Compression-Jet Coupling Refrigeration System

Abstract

The invention discloses an improved vapor compression-jet coupled refrigeration system, which includes a condenser. The output of the condenser is divided into three paths, one path is connected with the input end of the pump, the other path is connected with one end of the second throttle valve, and the third path is connected with the input end of the pump. The road is connected to one end of the first throttle valve, the output end of the pump is connected to the input end of the generator, the output end of the generator is connected to the input end of the condenser through the ejector, and the other end of the second throttle valve It is connected with the input end of the ejector, and the other end of the first throttle valve is connected with the evaporator, the compressor and the ejector in turn. In the present invention, a branch is drawn from the condenser, and the branch pipeline is connected with the outlet pipeline of the compressor through the second throttle valve, and the gas-liquid two-phase fluid is mixed with the gas compressed by the compressor after condensation and throttling, and is cooled , and then sucked into the injector. The method can improve the working condition of the injector and increase the injection ratio of the injector.

Description

technical field [0001] The present invention relates to an improved vapor compression-jet coupled refrigeration system. Background technique [0002] The vapor compression-jet coupled refrigeration cycle can make full use of waste heat, solar energy, low-grade heat sources, etc. to replace part of the compression work, thereby saving mechanical energy consumption and improving energy utilization efficiency. [0003] The existing vapor compression-jet coupled refrigeration cycle has disadvantages such as low efficiency and small injection ratio of the ejector. This paper proposes a method that can improve system efficiency and increase the injection ratio of the ejector. [0004] Application number: 2005101110230, which proposes an "automobile air-conditioning refrigeration system driven by a compressor and exhaust waste heat", which uses the exhaust heat of automobile exhaust to drive the automobile air conditioner, and the insufficient part is supplemented by a compression ...

AI Technical Summary

Problems solved by technology

In the compressor-injection coupling system, the exhaust gas from the compressor enters the injector directly, the temperature is high, and the specific volume is large, which will lead to a small injection ratio of the injector and a large amount of working fluid required, resulting in a decrease in system performance and COP reduce

According to existing research, the working pressure of the ejector is limited by the outlet back pressure, that is, the condenser pressure, and has poor adaptability to changing working conditions

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