Flash separation injection refrigeration cycle system and working method using mixed refrigerant

Abstract

A flash separation injection refrigeration cycle system and working method using mixed refrigerants, the system includes a first generator, a second generator, an ejector, a first condenser, a second condenser, a circulation pump, and an intermediate heat recovery device, gas-liquid separator, expansion valve and evaporator; the system introduces a gas-liquid separator on the basis of the traditional jet refrigeration cycle to realize the flash separation of non-azeotropic mixed refrigerants, and obtain a product rich in low boiling point components Gaseous mixed refrigerant, the gaseous refrigerant enters the evaporator after condensation, so the low boiling point components in the evaporator are increased, and a higher evaporation pressure is obtained at the same evaporation temperature, thereby reducing the compression ratio of the ejector, Optimizing the working condition of the ejector effectively improves the injection ratio of the ejector and the cooling capacity of the system.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a flash separation spray refrigeration cycle system and working method using mixed refrigerants. Background technique [0002] With the rapid development of China's economy, people's demand for air conditioning and refrigeration is increasing. According to relevant statistics, my country's building energy consumption accounts for 30% of the total energy consumption, of which HVAC accounts for about 50% of building energy consumption. Therefore, low-energy air-conditioning and refrigeration systems are increasingly valued. At present, the vapor compression refrigeration cycle is mainly used in the air conditioning system, and the vapor compression refrigeration cycle system uses a compressor as a power source, which will generate a large amount of power consumption. [0003] Ejection refrigeration is a low-grade heat source driven refrigeration method, which ...

AI Technical Summary

Problems solved by technology

However, there are still some shortcomings in the existing research, that is, the component migration effect of the mixed refrigerant ejector has not been fully utilized, resulting in limited improvement of the system cycle performance.

Images