Menlik, TayfunOzcan, HasanArcaklioglu, Erol2024-09-292024-09-2920141300-3615https://hdl.handle.net/20.500.14619/8319In this study, second law analysis of environmentally friendly R2901R600/R600a mixture at a rate of 45/46/9 % by mass fraction has been experimentally executed on a water-cooled heat pump as a substitute for HFC134a at varying air and water mass flow rates. Experimental outputs indicate that the heat pump system shows the highest exergy efficiency at 0.040 kg s-1 of water mass flow rate and 0.1 kg s-1 of air mass flow rate running with both R134a and HC mixture. Even though proposed HC mixture has lower COP and rational efficiencies, cooling exergy efficiency of HC mixture is 2-3% better than that of R134a. Higher energy consumption and lower rational efficiencies can be resolved by a hermetic compressor with higher sweep volume which is compatible with pure and mixture hydrocarbons.eninfo:eu-repo/semantics/closedAccessR134aHydrocarbon MixtureHeat PumpGlobal warmingSecond law analysisArticle2821934WOS:000343190700003Q4