Title: An experimental investigation on exergy analysis of an ejector expansion refrigeration system

Authors: Nagihan Bilir Sağ; Halil Kürşad Ersoy; Arif Hepbasli

Addresses: Faculty of Engineering, Department of Mechanical Engineering, Selcuk University, Alaeddin Campus, 42250 Konya, Turkey ' Faculty of Engineering, Department of Mechanical Engineering, Selcuk University, Alaeddin Campus, 42250 Konya, Turkey ' Faculty of Engineering, Department of Energy Systems Engineering, Yaşar University, 35100 Izmir, Turkey

Abstract: Utilisation of an ejector as an expander was experimentally investigated for an expansion work recovery in a basic refrigeration cycle. Exergy analysis was used to determine the amounts and locations of irreversibilities in the elements of the ejector expansion refrigeration system. It was seen that the ejector refrigeration cycle indicated a lower exergy destruction and a higher exergy efficiency compared to the vapour compression refrigeration cycle for each working condition. It was obtained that the values for the irreversibility of the ejector refrigeration cycle were less than in the vapour compression refrigeration cycle by 5.9-12.6% and the exergy efficiencies of ejector refrigeration cycle were 6.7-14.2% more than in the vapour compression cycle.

Keywords: irreversibility; ejector; exergy analysis; throttling; exergy efficiency.

DOI: 10.1504/IJEX.2017.087654

International Journal of Exergy, 2017 Vol.24 No.2/3/4, pp.201 - 215

Received: 16 Nov 2016
Accepted: 22 Apr 2017

Published online: 30 Oct 2017 *

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