Title: Irreversibility analysis of a two-evaporator vapour compression refrigeration system

Authors: Alptug Yataganbaba; Ali Kilicarslan; Irfan Kurtbas

Addresses: Department of Mechanical Engineering, Hitit University, Corum 19030, Turkey ' Department of Mechanical Engineering, Hitit University, Corum 19030, Turkey ' Department of Mechanical Engineering, Hitit University, Corum 19030, Turkey

Abstract: In this study, irreversibility analysis of a two-evaporator vapour compression refrigeration system under the influence of superheating and subcooling effects was carried out. The thermodynamic properties of the refrigerants were formulated using the most commonly used software Engineering Equation Solver (EES-V9.172-3D) in the analysis of refrigeration systems. Environment friendly refrigerants R407C, R410A, R404A and R134a were taken into consideration and the analysis was based on the second law of thermodynamics. The effect of the evaporator and condenser temperature on the irreversibility of the system components, such as evaporator, compressor and condenser were investigated. In addition to this, the exergy efficiency values of the system components were computed in accordance with refrigerants in terms of a certain operating conditions. One of the more significant findings to emerge from this study is that irreversibility values of system components depend on evaporator and condenser temperature change.

Keywords: vapour compression refrigeration; two evaporators; irreversibility analysis; exergy efficiency; superheating effects; subcooling effects; environmentally friendly refrigerants; second law; thermodynamics; evaporator temperature; condenser temperature; temperature change.

DOI: 10.1504/IJEX.2015.072895

International Journal of Exergy, 2015 Vol.18 No.3, pp.340 - 355

Received: 27 May 2014
Accepted: 16 Nov 2014
Published online: 06 Nov 2015 *

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