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CSME 2023/08
Volume 44 No.4
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389-397
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A Compressor Model to Determine Cooling Cycle Efficiencies and Performances Without or With Internal Heat Exchanger for Specific Refrigerant
Suleyman SISMAN a, Mehmet IPEKOGLU a and Cem PARMAKSIZOĞLU b
aTurkish-German University, Faculty of Engineering, Department of Mechanical Engineering, Sahinkaya St., No:106, 34820, Beykoz, Istanbul, Turkey
bIstanbul Technical University, Faculty of Mechanical Engineering, Inonu St., No:65, 34437, Gumussuyu, Beyoglu, Istanbul, Turkey
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Abstract:
Today, the importance of refrigeration has increased due to the shortage of food, food storage, health, and industrial cooling. Global warming is the most important environmental problem that the world has faced recently. Global Warming Potential (GWP) values of HFC type refrigerants are high. In order to contribute to this environmental problem, HFC type refrigerants are replaced with alternatives. In some cases, especially when flammability is crit-ical, alternative refrigerants are rarely preferred yet. Therefore, it is very important to use appropriate charge values. Cooling systems are modeled in order to use them under necessary and sufficient minimum conditions. While cooling system modeling, the most important problem is to choose the compressor model according to the appropriate refrigerant. In this study, a cooling system modeling code was developed and integrated with CoolProp software in MATLAB environment. The purpose of this investi-gation is to develop a method comp simulation soft-ware for determining which compressor model to use for a selected fluid. The modeling of refrigera-tion cycle with and without Internal Heat Exchanger (IHX) cases has been investigated. Analyses were made on different compressor correlations and the results were compared with the experimental data from literature. As the second purpose of the present study a compressor model has been proposed in the literature. The proposed model results are good agreement with EN12900 and experimental results.
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Keywords: cooling system compressor model, refrigeration cycle EER, internal heat exchanger
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*Corresponding author; e-mail:
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©
2023
CSME , ISSN 0257-9731
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