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Exergetic performance assessment of a variable-speed R404a refrigeration system

2009; Wiley; Volume: 34; Issue: 6 Linguagem: Inglês

10.1002/er.1553

1099-114X

Önder Kızılkan, Ahmet Kabul, Ali Kemal Yakut,

Building Energy and Comfort Optimization

International Journal of Energy ResearchVolume 34, Issue 6 p. 463-475 Research Article Exergetic performance assessment of a variable-speed R404a refrigeration system Önder Kızılkan, Corresponding Author Önder Kızılkan kizilkan@tef.sdu.edu.tr Technical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeyTechnical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeySearch for more papers by this authorAhmet Kabul, Ahmet Kabul Technical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeySearch for more papers by this authorAli Kemal Yakut, Ali Kemal Yakut Technical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeySearch for more papers by this author Önder Kızılkan, Corresponding Author Önder Kızılkan kizilkan@tef.sdu.edu.tr Technical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeyTechnical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeySearch for more papers by this authorAhmet Kabul, Ahmet Kabul Technical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeySearch for more papers by this authorAli Kemal Yakut, Ali Kemal Yakut Technical Education Faculty, Department of Mechanical Education, Süleyman Demirel University, 32260 Isparta, TurkeySearch for more papers by this author First published: 18 June 2009 https://doi.org/10.1002/er.1553Citations: 8AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract The goal of this study is to carry out exergy analyses for an experimental variable-speed refrigeration system working with R404a in order to determine irreversibility rates and exergetic efficiencies of system components and the overall system. For this aim, an experimental refrigeration system was designed with a frequency inverter mounted on compressor electric motor. Controlling the rotational speed of the compressor with a frequency inverter is one of the best methods to vary the capacity of the refrigeration system. The experiments were made for different compressor electric motor frequencies. The results showed that at low-frequency values, irreversibility rates of the system decreased and exergetic efficiencies were increased. In addition, the major irreversibility occurs in the compressor by 61.47–61.83% followed by condenser by 17.00–16.52%, evaporator by 12.39–13.73% and expansion valve by 6.24–6.76% for different compressor frequencies. Copyright © 2009 John Wiley & Sons, Ltd. Citing Literature Volume34, Issue6May 2010Pages 463-475 RelatedInformation