THE OPTIMUM GAS COOLER PRESSURE FOR TRANSCRITICAL CO2 REFRIGERATION CYCLE: A NEW CORRELATION

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Oezguer A. E., Bayrakci H. C., Akdag A. E.

ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, vol.29, no.2, pp.23-28, 2009 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 29 Issue: 2
• Publication Date: 2009
• Journal Name: ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
• Page Numbers: pp.23-28
• Süleyman Demirel University Affiliated: Yes

Abstract

The gas cooler pressure is one of the most important design parameter for energy and exergy efficiencies of a transcritical CO2 (R744) cooling system. In this study, the optimum gas cooler pressure is obtained as a function of evaporation temperature of CO, and outlet temperature of CO2 following the gas cooler. The presented correlation is valid for -25 degrees C < T-b < 0 degrees C and 30 degrees C < T-gs,T-c < 55 degrees C. The obtained correlation is presented with a three dimensional graphic for these limits. The evaporation temperature interval is wider than the recent literature works, so this is the importance of this correlation. However a comparison is presented between correlations presented a literature work and presented with this study.