Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance Evaluation of a Defrosting System Using the Condensation Heat of a Refrigerator in Cold Storage

저온창고에서 냉동기 응축폐열을 이용한 제상시스템 성능평가

  • Park, Chunwan (Graduate School of Mechanical Engineering, Chonbuk National University) ;
  • Lee, Donggyu (Graduate School of Mechanical Engineering, Chonbuk National University) ;
  • Im, Kwanbin (Cooltainer Co., Ltd.) ;
  • Kang, Chaedong (Geothermal Energy Center, Chonbuk National University)
  • Received : 2013.10.29
  • Accepted : 2013.12.02
  • Published : 2014.02.10
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Abstract

In a cold chain, the refrigerator is also employed for defrosting, by using an electric heater, which consumes 15% of the power for the system operation. In this study, the condensation heat of the refrigerant was suggested as the heat source of defrosting heat, instead of that from an electric defrost heater. The heat for defrosting was stored to a phase change material (PCM, NMP : $52^{\circ}C$) in thermal storage, and was periodically supplied to the evaporator by a circulation loop of brine. As a result, a defrost time by the PCM was obtained that was less than or equal to that by the electric heater. Moreover, power consumption during defrosting was saved by up to 99% of that of the electric heater.

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References

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Cited by

  1. Recent Progress in Air-Conditioning and Refrigeration Research: A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2014 vol.27, pp.7, 2015, https://doi.org/10.6110/KJACR.2015.27.7.380