期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：6
页码：9242
DOI：10.15680/IJIRSET.2015.0506081
出版社：S&S Publications
摘要：Environmentally benign natural refrigerants have recently attracted considerable attention due torefrigerant contributions to ozone depletion and global warming. In India, about 80% of the domestic refrigerators useR134a as refrigerant due to its excellent thermodynamic and thermo physical properties. But R134a has high GWP of1430. The higher GWP due to R134a emissions from domestic refrigerators leads to identifying a long term alternativeto meet the requirements of system performance, refrigerant-lubricant interaction, energy efficiency, environmentalimpacts, safety and service. In the group of natural refrigerants, hydrocarbons are most closely related to the HFCs. Inaddition to their zero ODP and very low GWP, they are compatible with common materials found in refrigeratingsystems. Therefore, in this study, a performance of R290 and R600a mixtures (80/20, 70/30, 60/40 and 50/50proportion by mass, designated by RM1, RM2, RM3 and RM4, respectively) in a vapour compression refrigerationsystem is conducted by the thermodynamic calculation of performance parameters. The results show that the mixturesexhibit higher refrigerating effects than R134a. All the mixtures, except RM1, exhibited a low discharge pressure,which is more desirable in refrigeration systems. The COPs of the mixtures were close to that of R134a with theadvantage of higher values. Generally, the overall performance of the selected mixtures was better than that of R134a.The performance of RM4 was the best in terms of low compressor work and discharge pressure, and high COP, atvarying evaporating temperatures.
关键词：ODP; GWP; COP; Refrigerating Effect; Compressor Work Input; Discharge Pressure.
