대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제25권2호
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  • Pages.205-215
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  • 2001
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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Lumped Capacitance 방법을 이용한 휜-관 열교환기의 정량적 국소 대류 열전달 해석을 위한 실험적 연구

An Experimental Study on Quantitative Interpretation of Local Convective Heat Transfer for the Fin and Tube Heat Exchanger Using Lumped Capacitance Method

  • 발행 : 2001.02.01
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초록

An experimental study has been performed to investigate the heat transfer characteristics of fin and tube heat exchanger. The existing transient and steady methods are very difficult to apply for the measurements of heat transfer coefficients of a thin heat transfer model. In this study the lumped capacitance method was adopted. The heat transfer coefficients were measured by using the lumped capacitance method based on the liquid crystal thermography. The method is validated through impinging jet and flat plate flow experiments. The two experiments showed that the results of the lumped capacitance method with polycarbonate model showed very good agreements with those of the transient method with acryl model. The lumped capacitance method showed similar results regardless of the thickness of polycarbonate model. The method was also applied for the heat transfer coefficient measurements of a fin and tube heat exchanger. The quantitative heat transfer coefficients of the plate fin were successfully obtained. As the frontal velocity increased, the heat transfer coefficients were increased, but the color-band shape showed similar patterns regardless of frontal velocity.

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참고문헌

  1. Guannan Xi, Takeshi E., and Kunikazu T., 1997, 'Differences in simulation with Two and Three-Dimensional Models for Finned Tube Heat Exchangers,' Transport Phenomena in Thermal Science and Process Engineering, Kyoto, Japan : November 30-December 3
  2. Atkinson, K. N., Drakulic, R., Heikal, M. R., and Cowell, T. A., 1998, 'Two and Three-Dimensional Numerical Models of Flow and Heat Transfer over Louvered Fin Arrays in Compact Heat Exchangers,' International Journal of Heat and Mass Transfer, Vol. 41, pp. 4063-4080 https://doi.org/10.1016/S0017-9310(98)00165-3
  3. Tsai, S. F., and Sheu, T. W. H., 1998, 'Some Physical Insights into a Two-row Finned Tube Heat Exchanger,' Computer & Fluids, Vol. 27, No. 1, pp. 29-56 https://doi.org/10.1016/S0045-7930(97)00025-X
  4. Jang, J. Y., and Chen, L. K., 1997, 'Numerical Analysis of Heat Transfer and Fluid Flow in a Three-Dimensional Wavy-Fin and Tube Heat Exchangers,' International Journal of Heat and Mass Transfer, Vol. 40, No. 16, pp. 3981-3990 https://doi.org/10.1016/S0017-9310(97)00047-1
  5. Wang, C. C., Lee, C. J., Chang, C. T., and Lin, S. P., 1999, 'Heat Transfer and Friction Correlation for Compact Louvered Fin-and-Tube Heat Exchangers,' International Journal of Heat and Mass Transfer, Vol. 42, pp. 1945-1956 https://doi.org/10.1016/S0017-9310(98)00302-0
  6. Critoph, R. E., Holland, M. K., and Fisher, M., 1999, 'Comparison of Steady State and Transient Methods for Measurement of Local Heat Transfer in Plate Fin-Tube Heat Exchangers using Liquid Crystal Thermography with Radiant Heating,' International Journal of Heat and Mass Transfer, Vol. 42, pp. 1-12 https://doi.org/10.1016/S0017-9310(98)00207-5
  7. Yun, J. Y., and Lee, K. S., 1999, 'Investigation of Heat Transfer Characteristics on Various Kinds of Fin-and-Tube Heat Exchangers with Interrupted Surface,' International Journal of Heat and Mass Transfer, Vol. 42, pp. 2375-2385 https://doi.org/10.1016/S0017-9310(98)00310-X
  8. Incropera, F. P., and DeWitt, D. P., 1999, 'Fundamentals of Heat and Mass Transfer,' John Wiley and Sons, Inc.
  9. Kim, K., 1993, 'An Experimental Study on the Flow and Heat Transfer Characteristics of an Impinging Jet,' KSME Journal, Vol. 7, No. 3, pp. 258-271
  10. Hallcrest, (1991), The HALLCREST Handbook of Thermochromic Liquid Crystal Technology, Hallcrest Co., Glenview, IL.
  11. 김예용, 김귀순, 1995, '액정을 이용한 열전달 측정 방법에서의 측정오차를 줄이기 위한 연구,' 한국항공우주학회지, 제23권, 제4호, pp. 74-82
  12. Schultz, D. L., and Jones, T. V., (1973), 'Heat Transfer Measurements in Short Duration Hypersonic Facilities,' AGARD-AG-165
  13. 김예용, 김귀순, 1999, '파형 충동분류의 열전달 특성에 관한 실험적 연구,' 대한기계학회논문집(B), 제23권, 제3호, pp. 320-329
  14. Baughn, J. W., Ireland, P. T., Jones, T. V., and Saniei, N., (November 1989) 'A Comparison of the Transient and Heated-Costing Methods for the Measurement of Local Heat Transfer Coefficients on a Pin Fin,' Trans. of the ASME Journal of Heat Transfer, Vol. 111, pp. 877-881
  15. 이대희, 정영석, 김대성, 임경빈, 1997, '볼록한 반구면에 충돌하는 원형제트의 열전달 및 유동특성,' 대한기계학회논문집(B), 제21권, 제4호, pp. 579-588
  16. 김예용, 정기호, 김귀순, 서태범, 1999, '다중 오리피스 노즐을 이용한 충졸분류의 열전달 향상에 관한 실험적 연구,' 공기조화 냉동공학 논문집, 제11권, 제5호, pp. 647-657
  17. Kline, S. J., and McClintock, F. A., 1953, 'Describing Uncertainties in Single Sample Experiments,' Mechanical Engineering, Vol. 75, pp. 3-8