Evaluation of Vapour Compression Refrigeration System Using R407C and R507

Abstract

The existing refrigerant requirements are, system performance should not be compromised, refrigerant and lubrication interaction should be as required, it should be energy efficient, environment friendly etc. After Montreal protocol, use of refrigerants like CFC and HCFC banned because of high ozone depleting potential (ODP). So there is need to find out a refrigerant which is environment friendly, such as HFC refrigerants as working fluids in refrigeration and air conditioning systems and which can be used long term substitute for existing refrigerants. The most important qualification for refrigerants is low ozone depleting potential (ODP). HFC refrigerants have suitable specifications such as non-flammability, stability, and similar vapour pressure to the refrigerant CFCs and HCFCs and zero ozone depleting potential (ODP) . They are used in many applications with safety of the leakage from the system also with these refrigerants it was found that, there was no need to change in the design of the refrigeration system. So we can look forward to HFC refrigerants. R407C and R507 are HFC refrigerants which are under study.