EVALUATING ON EXERGY ANALYSIS OF REFRIGERATION SYSTEM WITH TWO-STAGE AND ECONOMISER

Year 2012, Volume: 4 Issue: 4, 15 - 25, 01.12.2012

Bayram Kılıç Osman İpek Sinan Uğuz

Abstract

In this study, the first and second law analysis of vapor compression refrigeration cycle with two-stage and economiser were carried out. R134a was used in system as refrigerant. The necessary thermodynamic values for analyses were calculated by Solkane program. The coefficient of performance (COP), exergetic efficiency (ηex) and total irreversibility rate of the system in the different operating conditions were investigated for this refrigerant. As a result, the highest coefficient of performance value and exergy efficiency value was obtained in the condenser temperature 25 oC and evaporator temperature 5 oC in the refrigeration system with two-stage and economiser. The highest irreversibility value was obtained in the condenser temperature 45 oC and evaporator temperature -15 oC in the refrigeration system

Keywords

Refrigeration system, COP, exergy analysis, two-stage

References

• Zhang, J., Xu, Q., Cascade refrigeration system synthesis based on exergy analysis. Computers and Chemical Engineering, 35, 1901– 1914, 2011.
• Ahamed, J.U., Saidur, R., Masjuki H.H., A review on exergy analysis of vapor compression refrigeration system. Renewable and Sustainable Energy Reviews, 15, 1593–1600, 2011.
• Lucia, U., Second law analysis of the ideal Ericsson magnetic refrigeration. Renewable and Sustainable Energy Reviews, 15, 2872– 2875. 2011
• Rezayan, O., Ali Behbahaninia, A., Thermoeconomic optimization and exergy analysis of CO2/NH3 cascade refrigeration systems. Energy, 36, 888–895, 2011.
• Shuxue, X., Guoyuan. M., Exergy analysis for quasi two-stage compression heat pump system coupled with ejector. Experimental Thermal and Fluid Science, 35, 700–705, 2011.
• Aprea, C., Renno, C., Experimental comparison of R22 with R417A performance in a vapour compression refrigeration plant subjected to a cold store. Energy Convers Manage, 45,1807–1819, 2004.
• Cengel, A.Y. and Boles, A.M., Thermodynamics: An Engineering Approach, McGrawHill, New York, A.B.D., 1994.
• Arora, A., Kaushik, S.C., Theoretical analysis of a vapour compression refrigeration system with R502, R404A and R507A. Inter. J. Refriger., 31, 998-1005, 2008.
• http://www.solvaychemicals.com
• Khan, J.R., Zubair, S.M., Design and rating of a two-stage vapor compression refrigeration system. Energy, 23, 867–878, 1998.
• Jorgensen, S.E., Nielsen, S.N., Application of exergy as thermodynamic indicator in ecology. Energy, 32, 673–685, 2007.
• Sciubba, E., Bastianoni, S., Tiezzi, E., Exergy and extended exergy accounting of very large complex systems with an application to the province of Siena, Italy. Journal of Environmental Management, 86, 372–382, 2008.
• Wall, G., Gong, M., On exergy and sustainable development-Part 1: Conditions and concepts. Exergy, 3, 128–145, 2001.
• Yamankaradeniz, R., Horuz, İ., Coşkun, S., Soğutma Tekniği ve Uygulamaları, VİPAŞ A.Ş., Bursa, 2002.