Cooling performance of R510A in domestic water purifiers

Abstract

Cooling performance of R510A is examined both numerically and experimentally in an effort to replace HFC134a in the refrigeration system of domestic water purifiers. Although the use of HFC134a is currently dominant, it is being phased out in Europe and most developed countries due to its high potential contribution to global warming. To solve this problem, cycle simulation and experimental measurements are conducted with a new refrigerant mixture of 88%RE170/12%R600a using actual domestic water purifiers. This mixture has been recently numbered and listed as R510A by ASHRAE. Test results show that, due to the small internal volume of the refrigeration system of the domestic water purifiers, system performance with R510A is greatly influenced by the amount of charge. With the optimum charge amount of 20 to 21 g, approximately 50% that of HFC134a, the energy consumption of R510A is 22.3% lower than that of HFC134a. The compressor discharge temperature of R510A is 3.7℃ lower than that of HFC134a at the optimum charge. Overall, R510A, a new, long term, and environmentally safe refrigerant, is a good alternative for HFC134a. Furthermore, it requires only minor changes in the refrigeration system of the domestic water purifiers.

Eksperimentalna analiza svojstava ekološki prihvatljivih radnih tvari R510A i R600a u modificiranome parnome kompresorskome rashladnom sustavu

“…Park et al [14] numerically and experimentally examined the cooling performance of R510A as a replacement for R134a in the refrigeration system of domestic water purifiers. Test results showed that, due to the small internal volume of the domestic water purifier's refrigeration system, the system performance with R510A is greatly influenced by the amount of charge.…”

Exergy Performance Investigation of Eco-Friendly Refrigerant Mixtures as an Alternative to R134a in a Domestic Refrigerator

“…Results of tests found that energy usage and compressor discharge temperature of R510A are 22.3 percent and 3.70 degrees Celsius lower than those of HFC134a with 50% of the refrigerant charge, respectively. HFC134a is a tremendous long substitute for R510A, which necessitates slight alteration to the refrigeration system of household water purifiers compared to HFC134a [16].…”