Document Type
Conference Item (Restricted)
Publication Date
1-1-2011
Abstract
This paper emphasized on the possibilities of researches in the field of exergy analysis in various usable sectors where vapor compression refrigeration systems are used. Exergy losses, exergy efficiency, second law efficiency and irreversibility of the system components as well as of the whole system are measured. In the vapor compression system, R134a, R290 and R600a are considered as refrigerants. Exergy parameters in the compressor, evaporator, condenser and expansion devices are calculated and analyzed. Exergy losses depend on evaporator temperatures, condensing temperature, refrigerants and ambient temperature. Most of the exergy losses occur in the condenser. Expansion device has the lowest losses. Exergy parameters are compared for different operating temperature. It is found that hydrocarbons (R600a) have 50% higher exergy efficiency than R134a. Mixture of hydrocarbons also shows the best performance based on the exergy analysis.
Keywords
Hydrocarbon, Exergy loss, Exergy efficiency, Performance
Divisions
fac_eng
Event Title
2011 IEEE Conference on Clean Energy and Technology (CET)
Event Location
Kuala Lumpur
Event Dates
27-29 June 2011
Event Type
conference
Additional Information
Conference code: 87112 Export Date: 6 December 2012 Source: Scopus Art. No.: 6041480 doi: 10.1109/CET.2011.6041480 Language of Original Document: English Correspondence Address: Ahamed, J.U.; Department of Mechanical Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia; email: jamal293@yahoo.com References: Gaggioli, R.A., Available energy and exergy (1998) Internat. J. Appl. Thermodynamics, 1 (1-4), pp. 1-8; Wark, K.J., (1995) Advanced Thermodynamics for Engineers, , New York McGraw-Hill; Bejan, A., (1988) Advanced Engineering Thermodynamics, , Wiley, New York; Moran, M.J., (1982) Availability Analysis: A Guide to Efficient Energy Use, , Prentice-Hall, Englewood Cliffs, NJ; Bejan, A., (1982) Entropy Generation Through Heat and Fluid Flow, , Willey, New York; Rosen, M.A., Dincer, I., Kanoglu, M., Role of exergy in increasing efficiency and sustainability and reducing environmental impact (2008) Energy Policy, 36 (1), pp. 128-137. , DOI 10.1016/j.enpol.2007.09.006, PII S0301421507003886; Vincent, C.E., Heun, M.K., Thermodynamic Analysis and Design of Domestic Refrigeration Systems Domestic Use of Energy Conference, Calvin College, GrandRapids, Michigan, USA. 2006; Bayrakci, H.C., Ozgur, A.E., Energy and exergy analysis of vapor compression refrigeration system using pure hydrocarbon refrigerants (2009) International Journal of Energy Research, 33 (12), pp. 1070-1075; Chi, O.S., (2007) Exergy Analysis of Vapor Compression Refrigeration System by Using Hydrocarbon As Working Fluid in Mechanical Engineering, , University of Malaya: Malaysia; Arora, A., Kaushik, S.C., Theoritical Analysis of vapor compression refrigeration system with R502, R404A and R507 A (2008) Inernational Journal of Refrigeration, 31, pp. 998-1005; Adegoke, C.O., Akintunde, M.A., Fapetu, O., Comparative Exergetic Analysis of Vapor Compression Refrigeration Systems in the superheated and Subcooled Regions (2007) A U J T, 10 (4), pp. 254-263; Yumrutas, R., Kunduz, M., Kanoglu, M., Exergy analysis of vapor compression refrigeration systems (2002) Exergy, An International Journal, 2, pp. 266-272