How does the high compression ratio of green refrigerant compressor help improve refrigeration efficiency?

The smaller the compression ratio of green refrigerant compressor, the larger its exhaust volume and the cooling capacity. On the contrary, if the compression ratio increases, the compression process of each stage will gradually increase the temperature and pressure of the gas, but at the same time the compression ratio of each stage will decrease, which helps to improve the refrigeration coefficient. The refrigeration coefficient is an important indicator to measure the efficiency of the refrigerator. It indicates the cooling capacity that can be generated per unit power consumption. Therefore, by reasonably designing the number of compressor stages and the compression ratio of each stage, the overall refrigeration efficiency can be improved while ensuring the stable operation of the compressor.
In practical applications, the condensing pressure will increase under high temperature conditions, resulting in an increase in the compression ratio. In order to cope with this situation, the two-stage compression refrigeration cycle is widely used. The two-stage compression refrigeration cycle raises the gas from the evaporation pressure to the condensation pressure through two compression processes, and the compression ratio of each compression is relatively low. This method not only reduces the power consumption of each stage of compression, but also improves the refrigeration efficiency. Especially under the working conditions of low evaporation temperature and high condensation temperature, the advantages of the two-stage compression refrigeration cycle are more obvious.
For green refrigerant compressors, choosing a suitable refrigerant is also one of the key factors to improve refrigeration efficiency. The lower the standard boiling point of the refrigerant, the higher its condensing pressure at room temperature. Therefore, when selecting a refrigerant, it is necessary to comprehensively consider factors such as its boiling point, condensing pressure, and refrigeration efficiency. At the same time, since green refrigerants usually have lower global warming potential and ozone depletion potential, they have less impact on the environment.
During the operation of the refrigeration system, the performance of the evaporator and condenser has an important impact on the refrigeration efficiency. The evaporator is responsible for evaporating the refrigerant from liquid to gas and absorbing heat; while the condenser condenses the refrigerant from gas to liquid and releases heat. If the evaporator or condenser has problems such as ice, frost or dust accumulation, it will cause its heat transfer performance to decrease, thereby affecting the refrigeration efficiency. Therefore, regular maintenance and cleaning of the refrigeration system is one of the important measures to maintain high refrigeration efficiency.