Case study of liquid suction heat exchanger in a mechanical refrigeration system using alternative refrigerants

Mahmood, Raid Ahmed (2020) Case study of liquid suction heat exchanger in a mechanical refrigeration system using alternative refrigerants. International Journal of Engineering & Technology, 9 (3):30777. pp. 644-649. ISSN 2227-5258

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Abstract

This paper investigates the effect of adding a liquid-suction heat exchanger on the performance of a mechanical refrigeration system using alternative refrigerants. Engineering Equation Solver (EES) was used to simulate a mechanical refrigeration system in two configurations: modified system with liquid-suction heat exchanger and system without liquid-suction heat exchanger. The results revealed that the liquid-suction heat exchanger has a significant effect on the system performance as it influences the subcooling and superheating temperatures. The results also showed that the highest value of the coefficient of performance (COP) was achieved by the modified system with refrigerant type R134a, COP was about 7% and 12% higher than that of refrigerants R600a and R22 respectively. It also presented that R600a has high response to increase the refrigerant effect when the liquid-suction heat exchanger is used. R600a is good alternative refrigerant and it can be used in the mechanical refrigeration system, but its COP is lower than that of R134a.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Date Deposited: 10 Sep 2020 02:28
Last Modified: 11 Sep 2020 03:30
Uncontrolled Keywords: Liquid-Suction Heat Exchanger; Alternative Refrigerant; Subcooling; Superheating
Fields of Research (2008): 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
Identification Number or DOI: doi:10.14419/ijet.v9i3.30777
URI: http://eprints.usq.edu.au/id/eprint/39433

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