Experimental Exergetic Performance Evaluation of an Elevator Air Conditioner Using R-1234yf
Makaleler > Tam Makale · 2014
Yazarlar: MUSTAFA ARAZ, Ali GÜNGÖR, A HEPBASLİ
International Journal of Engineering and Technology, Diğer Kurumların Hakemli Dergileri, Uluslararası, 2014, cilt 7, ss 254-260
Özet
In this study, an elevator air conditioning (EAC) prototype, designed and manufactured at a factory located in Izmir, Turkey, is considered to assess its performance using exergy analysis method.The analyses performed include two various refrigerants, namely R-134a and R-1234yf.The maximum improvement potential is found to be in the condenser for R-134a, while it is in the compressor for R-1234yf.The COP values are determined to be 2.550 and 2.33, while the product/fuel based exergy efficiencies are determined to be 58.72% and 57.39% for R-134a and R-1234yf, respectively.The biggest irreversibility occurred in the compressor for both refrigerants.The exergy loss and flow diagram (the so-called Grassmann diagram) is also presented for the EAC studied to give quantitative information regarding the proportion of the exergy input that is dissipated in the various system components.