Nowadays HCFCs refrigerants are restricted because it causes the depletion of ozone layer. However, natural gases such as ammonia as an organic compound, propane and propylene as hydrocarbon are easy and cheap to obtain as well as environmental. Accor...
Nowadays HCFCs refrigerants are restricted because it causes the depletion of ozone layer. However, natural gases such as ammonia as an organic compound, propane and propylene as hydrocarbon are easy and cheap to obtain as well as environmental. Accordingly, this experiment apply the R717 and HFC134a to study the performance characteristic from the superheat control and compare the energy efficiency of two refrigerants from the high performance. The condensing pressure of refrigeration system is increased from 15bar to 16bar and degree of superheat is increased from O℃ to 5℃ at each condensing pressure. As the result of experiment, when comparing the each COP, we knew the R717 is suitable as the alternative refrigerant of the HFC134a.