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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Analysis on Longitudinal Heat Conduction in Printed Circuit Heat Exchanger

인쇄기판형 열교환기의 유동방향 전도열전달에 관한 수치해석 연구

  • Oh, Dong-Wook (Department of Mechanical Engineering, Chosun University) ;
  • Kim, Young (Department of Extreme Thermal Systems, Korea Institute of Machinery and Materials) ;
  • Choi, Jun Seok (Department of Extreme Thermal Systems, Korea Institute of Machinery and Materials) ;
  • Yoon, Seok Ho (Department of Extreme Thermal Systems, Korea Institute of Machinery and Materials)
  • 오동욱 (조선대학교, 기계공학과) ;
  • 김영 (한국기계연구원, 열공정극한기술연구실) ;
  • 최준석 (한국기계연구원, 열공정극한기술연구실) ;
  • 윤석호 (한국기계연구원, 열공정극한기술연구실)
  • Received : 2014.09.15
  • Accepted : 2014.10.13
  • Published : 2014.12.10
Download PDF
⟨ Previous Next ⟩

Abstract

Longitudinal heat conduction is known to be an important factor in the design of a printed circuit heat exchanger(PCHE) for cryogenic applications. Parasitic heat conduction through the heat exchanger frame needs to be considered because it is known to decrease the effectiveness of the heat exchanger. In this paper, a conjugate heat transfer problem in a simple counter-flow PCHE is analyzed by a computational fluid dynamics simulation. The effect of longitudinal conduction in a straight channel is compared with the theoretical effectiveness-NTU relationship that assumes a "thin" heat exchanger frame. The calculation results suggest that the theoretical model is valid in the present calculation conditions where NTU is < 13.

Keywords

References

  1. Reay, D., Ramshaw, C., and Harvey, A., 2008, Process intensification : Engineering for efficiency, sustainability and flexibility, Butterworth-Heinemann, UK.
  2. Pua, L. M. and Rumbold, S. O., 2003, Industrial microchannel devices-Where are we today?, Proceedings, First International Conference on Microchannels and Minichannels, Rochester, NY, USA.
  3. Oh, D. W., Yoon, S. H., Kim, D. J., and Choi, J. S., 2011, Numerical analysis in designing microchannel heat exchanger for cryogenic application, Proceedings, International Air-Conditioning and Refrigeration Conference, ICACR 2011, Gangwon-Do, Korea.
  4. Shah, R. K. and Sekulic, D. P., 2003, Fundamentals of heat exchanger design, Wiley, Hoboken, NJ.
  5. Kroeger, P. G., 1967, Performance deterioration in high effectiveness heat exchangers due to axial heat conduction effect, Advances in Cryogenic Engineering, Vol. 12, pp. 363-372.
  6. Maranzana, G., Perry, I., and Maillet, D., 2004, Miniand micro-channels : influence of axial conduction in the walls, International Journal of Heat and Mass Transfer, Vol. 47, No. 17-18, pp. 3993-4004. https://doi.org/10.1016/j.ijheatmasstransfer.2004.04.016

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