• May 03, 2016 News! Vol.7, No.5 has been indexed by EI(Inspec)!   [Click]
  • May 03, 2016 News! Vol.7, No.4 has been indexed by EI(Inspec)!   [Click]
  • May 03, 2016 News! Vol.7, No.3 has been indexed by EI(Inspec)!   [Click]
General Information
Editor-in-chief
Prof. T. Hikmet Karakoc
Anadolu University, Faculty of Aeronautics and Astronautics, Turkey

IJET 2015 Vol.7(3): 254-260 ISSN: 1793-8236
DOI: 10.7763/IJET.2015.V7.801

Experimental Exergetic Performance Evaluation of an Elevator Air Conditioner Using R-1234yf

M. Araz, A. Güngör, and A. Hepbasli
Abstract—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.

Index Terms—Elevator air conditioning, exergy analysis, R-1234yf, R-134a.

M. Araz and A. Hepbasli are with the Department of Energy Systems Engineering, Yasar University, 35100 Bornova, İzmir, Turkey (e-mail: {mustafa.araz, arif.hepbasli}@yasar.edu.tr)
A. Güngör is with the Department of Mechanical Engineering, Ege University, 35100 Bornova, İzmir, Turkey (e-mail: ali.gungor@ege.edu.tr).

[PDF]

Cite: M. Araz, A. Güngör, and A. Hepbasli, "Experimental Exergetic Performance Evaluation of an Elevator Air Conditioner Using R-1234yf," International Journal of Engineering and Technology vol. 7, no. 3, pp. 254-260, 2015.

Copyright © 2008-2015. International Journal of Engineering and Technology. All rights reserved. 
E-mail: ijet@vip.163.com