Performance optimization of dual-loop cycles using R-600a and hydrocarbon mixtures designed for a domestic refrigerator-freezer

Won Jae Yoon, Kookjeong Seo, Hyun Joon Chung, Yongchan Kim

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

A dual-loop cycle for a domestic refrigerator-freezer (RF) has a large energy saving potential because it has a lower compression ratio due to a higher evaporating temperature in the fresh food compartment (R)-operation compared to a conventional refrigeration cycle, as well as individual optimization flexibility for each loop. In this study, optimizations of dual-loop cycles using R-600a and hydrocarbon (HC) mixtures were individually carried out. Each optimization process included both a theoretical analysis and an experimental investigation. The theoretical analysis was conducted to optimize the specifications of cycle components and the HC mixture compositions for each loop. Based on the experimental results, the energy consumptions of the optimized dual-loop cycles using R-600a and HC mixtures were decreased by 14.2% and 18.6%, respectively, compared with that of a bypass two-circuit cycle using R-600a in the same RF platform.

Original languageEnglish
Pages (from-to)1657-1667
Number of pages11
JournalInternational Journal of Refrigeration
Volume35
Issue number6
DOIs
Publication statusPublished - 2012 Sep

Keywords

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

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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