The Impact of Discharge Temperature Characteristics of Different Refrigerants on System Design

Under the same operating conditions, the order of discharge temperatures of R717, R22, and R134a from low to high is R134a < R22 < R717. This characteristic is of great significance for refrigerant selection and system design optimization. Discharge temperature is a key operating parameter of refrigeration systems, which is directly related to the operational reliability of compressors, the performance retention of lubricating oil, and the overall energy efficiency of the system. Refrigerants with low discharge temperatures can reduce the thermal load of compressors and lower the risk of lubricating oil degradation, making them suitable for scenarios with high requirements for operational stability. On the other hand, refrigerants with high discharge temperatures require more comprehensive cooling measures to prevent system failures caused by overheating. Therefore, matching the corresponding system structure and operating parameters based on the discharge temperature characteristics of refrigerants can achieve efficient and safe operation of refrigeration systems.