Exergy Analysis of R134a Based Vapour Compression Refrigeration TutorPresented by: Pooja Yadav DCRUST, Murthal

Contents IntroductionExergy analysisExperimental values of TutorModelling in EESExergetic efficiencyResultsConclusions References *

Introduction *

Why Exergy Analysis ?Exergy is the maximum useful work that could be obtained from the system at a given state in a specified environmentExamine the performance of the engineering device in the light of second law of thermodynamicsExergy is power tool in the optimization

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Experimental values of Tutor*

State points Description of state pointsPressure (bar)Temperature (K)1Evaporator outlet1.9279.52Compressor inlet1.9296.53Compressor outlet12.123495Condenser outlet11.53206Before Expansion Valve113177After Expansion Valve2.4279.5

Modelling of VCR cycle in EES*

Exergetic Efficiency*

Results *

ComponentExergy destruction (kW)Compressor14.212Condenser29.32Expansion Valve3.57Evaporator2.80

Conclusions & Future ScopeWe examine the performance of refrigeration tutor in light of second law of thermodynamicsWe discuss the exergy destruction of the components of the refrigeration tutorIn future we can calculate exergetic efficiency of individual componentOverall exergetic efficiency with alternative refrigerants*

References B. O. Bolaji, Exergetic Performance of a Domestic refrigerator using R12 and its Alternative Refrigerants, Eng. Sci. Technol., vol. 5, no. 4, pp. 435446, 2010.B. Tashtoush, and M. Tahat, Experimental study of new refrigerant mixtures to replace R12 in domestic refrigerators, vol. 22, pp. 495506, 2002.X. Xu, Exergy Analysis on a Vapor Compression Refrigerating System Using R12 , R134a and R290 as Refrigerants, Refrig. Air Cond., 1992.M. Chandrasekharan, Exergy Analysis of Vapor Compression Refrigeration System Using R12 and R134a as Refrigerants, vol. 2, no. July, pp. 134139, 2014.V. S. Reddy, N. L. Panwar, and S. C. Kaushik, Exergetic analysis of a vapour compression refrigeration system with R134a, R143a, R152a, R404A, R407C, R410A, R502 and R507A, Clean Technol. Environ. Policy, vol. 14, pp. 4753, 2012.B. O. Bolaji and Z. Huan, Thermodynamic analysis of hydrocarbon refrigerants in a sub-cooling refrigeration system, vol. 1, no. June, pp. 317333, 2013.P. Bansal, A. Aggarwal, R. Verma, and Y. Kumar, Upgradation and Simulation of Refrigeration Test Rig, DCRUST,Murthal, 2010.

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Questions ?*

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