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

Article

Mahmood, Raid Ahmed. 2020. "Case study of liquid suction heat exchanger in a mechanical refrigeration system using alternative refrigerants." International Journal of Engineering and Technology(Uae). 9 (3), pp. 644-649. https://doi.org/10.14419/ijet.v9i3.30777
Article Title

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

ERA Journal ID212910
Article CategoryArticle
Authors
AuthorMahmood, Raid Ahmed
Journal TitleInternational Journal of Engineering and Technology(Uae)
Journal Citation9 (3), pp. 644-649
Article Number30777
Number of Pages6
Year2020
PublisherScience Publishing Corporation
Place of PublicationUnited Arab Emirates
ISSN2227-524X
2227-5258
Digital Object Identifier (DOI)https://doi.org/10.14419/ijet.v9i3.30777
Web Address (URL)https://www.sciencepubco.com/index.php/ijet/article/view/30777
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.

KeywordsLiquid-Suction Heat Exchanger; Alternative Refrigerant; Subcooling; Superheating
ANZSRC Field of Research 2020401799. Mechanical engineering not elsewhere classified
Byline AffiliationsSchool of Mechanical and Electrical Engineering
Institution of OriginUniversity of Southern Queensland
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