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Exergetic analysis of a vapour compression refrigeration system with R134a, R143a, R152a, R404A, R407C, R410A, R502 and R507A

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Abstract

This communication deals with the exergetic analysis of a vapour compression refrigeration system with selected refrigerants. The various parameters computed are COP and exergetic efficiency in the system. Effects of degree of condenser temperature, evaporator temperature and sub-cooling of condenser outlet, supper-heating of evaporator out let and effectiveness of vapour liquid heat exchanger are also computed and discussed. In this study, it was found that R134a has the better performance in all respect, whereas R407C refrigerant has poor performance.

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Abbreviations

\( {\text{Ex}}_{\text{w}} \) :

Useful work done on/by system

\( \Uppsi_{\text{i}} \) :

Exergy at inlet

\( \Uppsi_{\text{o}} \) :

Exergy at outlet

η II :

Second law efficiency

\( Q_{\text{k}} \) :

Heat transfer rate

\( \dot{I} \) :

Irreversibility

\( \dot{S}_{\text{gen}} \) :

Entropy generation

\( \dot{m} \) :

Mass flow rate

\( T_{0} \) :

Ambient temperature

\( T_{\text{k}} \) :

Temperature of the heat source/sink

\( \dot{W}_{\text{c}} \) :

Power (rate of energy) (W)

F :

Factor of safety

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Authors and Affiliations

  1. Centre for Energy Studies, Indian Institute of Technology, Delhi, 110016, India

    V. Siva Reddy & S. C. Kaushik

  2. Department of Renewable Energy Sources, College of Technology and Engineering, MPUAT, Udaipur, 313001, India

    N. L. Panwar

Authors
  1. V. Siva Reddy
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  2. N. L. Panwar
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  3. S. C. Kaushik
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Correspondence to V. Siva Reddy.

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Siva Reddy, V., Panwar, N.L. & Kaushik, S.C. Exergetic analysis of a vapour compression refrigeration system with R134a, R143a, R152a, R404A, R407C, R410A, R502 and R507A. Clean Techn Environ Policy 14, 47–53 (2012). https://doi.org/10.1007/s10098-011-0374-0

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  • DOI: https://doi.org/10.1007/s10098-011-0374-0

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