Exergy analysis and experimental study of a vapor compression refrigeration cycle

This article presents a detailed experimental analysis of 2TR (ton of refrigeration) vapor compression refrigeration cycle for different percentage of refrigerant charge using exergy analysis. An experimental setup has been developed and evaluated on different operating conditions using a test rig having R22 as working fluid. The coefficient of performance, exergy destruction, and exergetic efficiency for variable quantity of refrigerant has been calculated. The present investigation has been done by using 2TR window air conditioner and the results indicate that the losses in the compressor are more pronounced, while the losses in the condenser are less pronounced as compared to other components, i.e., evaporator and expansion device. The total exergy destruction is highest when the system is 100% charged, whereas it is found to be least when the system is 25% charged.

[1]  Ibrahim Dincer,et al.  Role of exergy in increasing efficiency and sustainability and reducing environmental impact , 2008 .

[2]  Rémi Revellin,et al.  Exergy analysis of R413A as replacement of R12 in a domestic refrigeration system , 2010 .

[3]  H. P. Garg.  Solar Refrigeration and Air-Conditioning , 1987 .

[4]  T. J. Kotas,et al.  The Exergy Method of Thermal Plant Analysis , 2012 .

[5]  S. Anand,et al.  Second law based performance analysis of seawater source cascade heat pump system: a case study , 2010 .

[6]  I. Dincer.  Refrigeration Systems and Applications , 2003 .

[7]  S. C. Kaushik,et al.  Thermal performance evaluation of a solar air heater with and without thermal energy storage , 2012, Journal of Thermal Analysis and Calorimetry.

[8]  I. Eames,et al.  Thermodynamic analysis of absorption refrigeration cycles using the second law of thermodynamics method , 1995 .

[9]  Guangming Chen,et al.  Cycle performance study on R32/R125/R161 as an alternative refrigerant to R407C , 2007 .

[10]  Guangming Chen,et al.  Experimental study on HFC-161 mixture as an alternative refrigerant to R502 , 2005 .

[11]  M. J. Moran,et al.  Thermal design and optimization , 1995 .

[12]  S. C. Kaushik,et al.  Exergy analysis and parametric study of concentrating type solar collectors , 2007 .

[13]  R. Bugarel,et al.  Exergy analysis of a compression refrigeration system , 1989 .

[14]  S. K. Tyagi,et al.  Comparative experimental study of solar cookers using exergy analysis , 2012, Journal of Thermal Analysis and Calorimetry.

[15]  I Potts,et al.  A comparison of the operating performance of alternative refrigerants , 2003 .

[16]  M. Fatouh,et al.  Assessment of propane/commercial butane mixtures as possible alternatives to R134a in domestic refrigerators , 2006 .

[17]  S. C. Kaushik,et al.  Theoretical analysis of a vapour compression refrigeration system with R502, R404A and R507A , 2008 .

[18]  S. Anand,et al.  Second law based performance of modified VAC hybrid heat pump system using NH 3 -H 2 O as the working fluid , 2010 .

[19]  S. K. Tyagi,et al.  nergy and exergy analyses of thermal power plants : A review , 2011 .

[20]  V. Selladurai,et al.  Experimental analysis of a new refrigerant mixture as drop-in replacement for CFC12 and HFC134a , 2008 .

[21]  Mark W. Spatz,et al.  An evaluation of options for replacing HCFC-22 in medium temperature refrigeration systems , 2004 .

[22]  Antonio Lecuona,et al.  Compressors driven by thermal solar energy: Entropy generated, exergy destroyed and exergetic efficiency , 2002 .

[23]  Douglas Probert,et al.  Exergy-method analysis of a two-stage vapour-compression refrigeration-plants performance , 1998 .