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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Heat Transfer Characteristics of a Finned-Tube Heat Exchanger in a PCM Thermal Energy Storage System

상변화물질을 적용한 핀-관 열교환기의 열전달 성능 특성에 관한 실험적 연구

  • Jung, Dong Il (Graduate School of Mechanical Engineering, Korea University) ;
  • Chang, Min (Graduate School of Mechanical Engineering, Korea University) ;
  • Kim, Yongchan (Division of Mechanical Engineering, Korea University)
  • 정동일 (고려대학교 기계공학부 대학원) ;
  • 장민 (고려대학교 기계공학부 대학원) ;
  • 김용찬 (고려대학교 기계공학부)
  • Received : 2015.11.26
  • Accepted : 2015.12.01
  • Published : 2016.01.10
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Abstract

Phase change materials (PCM) are able to store a large amount of latent heat, and can be applied to thermal energy storage systems. In a PCM, it takes a long time to store heat in the storage system because of the low thermal conductivity. In this study, a finned-tube-in-tank heat exchanger was applied to a PCM thermal energy storage system to increase heat transfer efficiency. The effects of geometric and operating parameters were investigated, and the results were compared with those of the tube-in-tank heat exchanger. The finned-tube-in-tank heat exchanger showed higher heat transfer effectiveness than the tube-in-tank heat exchanger. The heat exchange effectiveness of the storage tank was determined as a function of the average NTU.

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References

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