Cycle Performance Study On Three Refrigerants Based On The Fluoroethane

Refrigerants are working fluids in the refrigeration systems. Refrigeration cycles explain how thermal management systems exchange energy with the environment, and thus all refrigeration and air-conditioning systems move heat from high to low-temperature reservoirs according to these cycles. It can be seen that the refrigerant (or working fluid) has a very important effect on the refrigeration cycle and design and operation of the refrigeration system.With the growing importance to the environment, the traditional refrigerants (HCFC-22, R502) have become less attractive, and study of alternative refrigerants in the refrigeration and air-conditioning industry have become a hot topic. In this paper, the cycle performances of the three refrigerants with the fluoroethane (HFC-161) are investigated and their contents are as follows:1. Reviewing the current state of the alternative refrigerant for HCFC-22in small refrigeration equipments, and proposing the HFC-161as a substitution of HCFC-22. The theoretical and experimental study of cycle performances for HFC-161, HFC-32and HFC-410A is conducted. The results show that the refrigerant HFC-161has a higher COP and the lower discharging temperature, which has a potential for substituting the refrigerant HCFC-22used in a small refrigeration system.2. Reviewing the current state of the alternative refrigerant for HFC-134a in the car air-conditioning system, and proposing the HFC-161+HFC-134a as a substitution of HFC-134a. The theoretical and experimental study of cycle performances for HFC-134a, HFC-161+HFC-134a is conducted. The results show that COP of the new refrigerant HFC-161+HFC-134a is similar to that of HFC-134a, but it has a higher cooling capacity and a low GWP. Therefore it has a potential for substituting the refrigerant HFC-134a used in the car air-conditioning system.3. Reviewing the current state of the alternative refrigerant for HFC-404A in low temperature refrigeration system, and proposing the mixed refrigerant HFC-161+HFC-125+HFC-143a with the new faction as a substitution of HFC-404A The theoretical and experimental study of cycle performances for HFC-161+HFC-125+HFC-143a, HFC-404A is conducted. The results show that COP of the new refrigerant HFC-161+HFC-125+HFC-143a is higher than that of HFC-404A, but it has a low GWP. Therefore it has a potential for substituting the refrigerant HFC-404A used in the low temperature refrigeration system.