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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Experimental Investigation on the Performance of a Scroll Expander for an Organic Rankine Cycle

유기랭킨사이클(ORC)을 위한 주전열면 열교환기의 채널주름비에 따른 유동 및 열전달특성

  • Sung, Min-Je (Department of Mechanical Engineering, Graduated School, Kookmin University) ;
  • Ahn, Joon (Department of Mechanical Systems Engineering, Kookmin University)
  • 성민제 (국민대학교 대학원 기계공학과) ;
  • 안준 (국민대학교 기계시스템공학부)
  • Received : 2013.12.31
  • Accepted : 2014.02.21
  • Published : 2014.04.10
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Abstract

A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger, which is designed for the evaporator and condenser of a geothermal ORC. Working fluid is geothermal water at hot side and R-245fa, which is a refrigerant designed for ORC, at cold side. Amplitude ratio of the channel and Reynolds number are considered as design parameters. Nusselt number is presented for the Reynolds number ranging from 50 to 150 and compared to analytic solutions. The result shows that higher amplitude ratio channel gives better heat transfer performance within the range of investigation.

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References

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  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