Exergy and energy analysis of a cascade refrigeration system using R744+R170 for low temperature applications

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5 Citations (Scopus)

Abstract

This article presents a thermodynamic energy and exergy analysis to optimize a cascade refrigeration system to be used for biomedical cold-storage application. An azeotrope mixture carbon dioxide and ethane-propane (R744+R170-R290) cascade system has been promoted as a prospective alternative solution to the use of HFC refrigerants. A novel multilinear regression analysis was employed to develop mathematical expressions for maximum COP, optimum evaporating temperatures of the R290 cycle, and an optimum mass flow ratio in terms of evaporating temperature, condensing temperature and temperature differences in the system's cascade condenser.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalInternational Journal of Mechanical and Mechanics Engineering
Volume10
Issue number6
Publication statusPublished - 15 Dec 2010

Keywords

  • Carbon dioxide
  • Ethane
  • Exergy
  • Mixture
  • Optimize
  • Refrigeration

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