Performance optimization of a Lorenz-Meutzner cycle charged with hydrocarbon mixtures for a domestic refrigerator-freezer

Won Jae Yoon, Kookjeong Seo, Hyun Joon Chung, Eun Ji Lee, Yongchan Kim

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A Lorenz-Meutzner cycle (called the "LM cycle") for a domestic refrigerator-freezer (RF) has energy saving potential because of lower entropy generation in the fresh food compartment (R)-evaporator and lower compression ratio due to higher mean evaporating temperature, compared to a conventional cycle using pure refrigerant. In this study, a thermodynamic analysis for the optimum compositions of hydrocarbon (HC) mixtures and cycle specifications was performed. In addition, the effects of the refrigerant charge, capillary tube, compressor capacity, and mixture composition on the performance of the LM cycle using R-290/R-600 were investigated experimentally. Based on the experimental data, the energy consumption of the optimized LM cycle using R-290/R-600 (40:60%) was 11.2% lower than that of a bypass two-circuit cycle using R-600a in the same RF platform.

Original languageEnglish
Pages (from-to)36-46
Number of pages11
JournalInternational Journal of Refrigeration
Volume35
Issue number1
DOIs
Publication statusPublished - 2012 Jan

Keywords

  • Household refrigerator
  • Hydrocarbon
  • Non-azeotropic mixture
  • Optimization
  • Performance

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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