Effects of accumulator heat exchangers on the performance of a refrigeration system

Hoon Kang, Kwangmin Choi, Chasik Park, Yong Chan Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

An accumulator heat exchanger (AHX) consists of an accumulator and an inner heat exchanger (IHX) contained in a shell. The AHX has been used in multi-air-conditioners to obtain system reliability and high performance by providing liquid refrigerant into expansion devices and preventing wet-compression. Energy is exchanged between the evaporator exit and the condenser exit in the AHX. In this study, the heat transfer characteristics of the AHX were investigated experimentally, and the effects of the AHX on the performance of a refrigeration system using R22 were measured. The operating characteristics of the refrigeration system with the AHX were considerably different from those without the AHX. The AHX system showed higher refrigerant flow rate than the non-AHX system at a constant EEV (electronic expansion valve) opening because of higher subcooling, resulting in better performance and reliability of the refrigeration system. At 50% EEV opening, the cooling capacity and COP of the AHX system were higher than those of the non-AHX system by 7.5% and 3.2%, respectively.

Original languageEnglish
Pages (from-to)282-289
Number of pages8
JournalInternational Journal of Refrigeration
Volume30
Issue number2
DOIs
Publication statusPublished - 2007 Mar 1

Fingerprint

Refrigeration
heat exchangers
refrigeration
Heat exchangers
Hot Temperature
valves (equipment)
electronics
Condensers (liquefiers)
condensers
evaporators
Refrigerants
Evaporators
heat transfer
Flow of fluids
Compaction
cooling

Keywords

  • Air conditioning
  • COP
  • Experiment
  • Heat Exchanger
  • Performance
  • R22
  • Refrigeration system
  • Sous-refroidissement

ASJC Scopus subject areas

  • Food Science
  • Mechanical Engineering

Cite this

Effects of accumulator heat exchangers on the performance of a refrigeration system. / Kang, Hoon; Choi, Kwangmin; Park, Chasik; Kim, Yong Chan.

In: International Journal of Refrigeration, Vol. 30, No. 2, 01.03.2007, p. 282-289.

Research output: Contribution to journalArticle

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