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Alaattin Metin Kaya

THERMODYNAMICAL STUDY AND TAGUCHI OPTIMIZATION OF A TWO-STAGE VAPOR COMPRESSION REFRIGERATION SYSTEM

ABSTRACT
This study’s primary purpose is to optimize the multistage refrigeration system with statistical methods. Taguchi optimization and ANOVA methods were applied to statistically determine the effects of components on system performance. The best operational conditions were defined for the maximum COP and exergy efficiency. Critical parameters have been determined to maximize the system’s performance. The evaporator temperature was defined as the most vital parameter (46.32%), and it is followed by condenser temperature (32.65%) for the maximum COP. The most important two parameters are determined as evaporator temperature with 29.14% and condenser temperature with 20.34% for maximum exergetic performance. As a result of 27 tests, the highest COP of the system was calculated as 2.67 and exergy efficiency as 55.22%. By using the optimum levels determined by Taguchi, it was ensured that the system’s COP was increased to 3.326 and its exergy efficiency to 71.23%. The ANOVA analyses indicate that the results’ confidence level is relatively high, to be 99.9%. Another parameter examined in this study is the inter-stage level determination method and its effect on system performance. The method of determining the optimum inter-stage level may vary according to the objective function and system conditions.
KEYWORDS
Multistage Refrigeration, exergy, coefficient of performance, Taguchi, ANOVA
PAPER SUBMITTED: 2021-11-11
PAPER REVISED: 2022-03-22
PAPER ACCEPTED: 2022-04-08
PUBLISHED ONLINE: 2022-05-22
DOI REFERENCE: https://doi.org/10.2298/TSCI211111054K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 5, PAGES [3951 - 3963]
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Thermodynamical study and Taguchi optimization of a two-stage vapor compression refrigeration system

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence