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 in Fin-Tube Heat Exchanger by Tow-In Winglet Pairs

Tow in 와류발생기에 의한 핀-관 열교환기의 성능실험

  • 곽경민 (영남대학교 부설 공업기술연구소) ;
  • ;
  • 배철호 (영남대학교 기계공학부)
  • Published : 2003.02.01
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Abstract

To reduce the air side pressure drop in air-cooled heat exchanger, tow-in type winglet vortex generators are applied. A specially designed multiple-channel test core was used in the experiments for the various geometry of winglet vortex generators. The proposed tow-in type vortex generator gives significant separation delay, reduces form drag, and removes the zone of poor heat transfer from near-wake of the tubes. The results show the significant pressure drop reduction for the tow-in win91e1 vortex generators with the similar enhancement of the heat transfer as other vortex generator applications in heat exchanger. In the range of Reynolds number of 350 to 2100 the pressure drop decrease 8∼15% and 34∼55% for the in-line and staggered tube banks, respectively, compared to those without vortex generators.

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References

  1. Proc., 9th Int. Heat Transfer Conference v.4 Simultaneous heat trasfer enhancement and flow loss reduction of fin-tubes Fiebig, M.;Mitra, N.;Dong, Y.
  2. Vortex generators for compact heat exchangers v.2 no.1-2 Fiebig, M.
  3. Fluid Mechanics and Thermodynamics Local heat transfer and flow losses in fin-tube heat exchangers with vortex generators: a comparison of round and flat tubes, Experimental heat transfer Fiebig, M.;Valencia, A.;Mitra, N.K.
  4. Experimental Thermal and Fluid Sci. v.7 Wing-type vortex generators for fin-and tube heat exchangers Fiebig, M.;Valencia, A.;Mitra, N. K.
  5. Int. J. Heat Mass Transfer v.37 Heat transfer enhancement in fin-tube exchangers by winglet type vortex generators Biswas, G.;Mitra, N. K.;Feibig, M.
  6. Pro. of 2nd Int. Symp. on Heat Transfer v.1 Advances in single-blow method for performance evaluation of heat transfer surfaces Mochizuki, S.;Yagi, Y.;Yang, W. J.
  7. Trans. ASME, Journal of Heat Transfer Modified single-blow technique for performance evaluation on heat transfer surfaces Liang, C. Y.;Yang, W. J.
  8. Korean J. of Air-Conditioning and Refrigeration Engineering v.11 no.1 Performance evaluation technique of a heat exchanger using a transient response analysis Park, B. K.;Hong, T.;Park, S. H.
  9. Compact Heat Exchangers(2nd ed.) Kay, W. M.;London, A. L.
  10. Mechanical Engineering v.75 Describing uncertainties in single sample experiments Kline, S. J.;McClintock, F. A.
  11. Trans. ASME, Journal of Heat transfer Laminar forced convection in the entrance region between parallel flat plates Mercer, W. E.;Pearce, W. M.;Hitchcock, J. E.
  12. Proceedings of the International Mechanical Engineering Congress and Exposition Heat transfer enhancement for finned-tube heat exchangers with winglets O'Brien, J. E.;Sohal, M. S.
  13. Advances in Heat Transfer Laminar flow forced convection in ducts Shah, R. K.;London, A. L.
  14. Int. Heat Transfer Conference Heat transfer enhancement and pressure drop for fin-tube bundles with winglet vortex generators Torii, K.;Kwak, K.M.;Nishino, K.
  15. 39th National Heat Transfer Symposium of Japan Measurement of local heat transfer for fin-tube bundle with vortex generator Miyazaki, S.;Torii, K.;Kwak, K.M.;Nishino, K.
  16. 4th International Symposium on Particle Image Velocimetry PIV measurement of 3-D velocity distribution around finned tubes with vortex generators Kawai, R.;Nishino, K.;Torii, K.