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

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Convective Heat Transfer Characteristics for the Compact Heat Exchanger with Flat Tubes and Plate Fins Having a Non-symmetric Staggered Arrangements

비대칭 엇갈림 배열로 구성된 납작관-평판휜 형상의 밀집형 열교환기에 대한 대류열전달 특성 해석

  • 모정하 (원광대학교 기계자동차공학부) ;
  • 이상호 (원광대학교 기계자동차공학부)
  • Published : 2009.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

Numerical analysis has been carried out to investigate air-side convective heat transfer characteristics in compact heat exchanger with flat tubes and continuous plate fins having a symmetric and non-symm etric staggered arrangements. Simulation results such as air velocity and temperature distributions are presented, and heat transfer coefficients are compared with previous experimental results. In order to investigate the flow and heat transfer features by periodic boundary conditions, the three blocks were used. Predicted heat transfer coefficients between the three blocks are similar while there are relatively differences, compared with the experimental data. From the calculated results a correlation for Colburn j factor in the compact heat exchanger system is suggested. The predicted results in this study can be applied to the optimal design of air conditioning system.

Keywords

References

  1. Kay, W. M. and London, A.L., 1998, Compact Heat Exchangers, Third Edition, Krieger
  2. Kayansayan, N., 1993, 'Heat Transfer Characte rization of Flat Plain Fins and Round Tube Heat Exchangers,' Exp. Therm. Fluid Sci. 6, pp. 263-272 https://doi.org/10.1016/0894-1777(93)90067-S
  3. Kim, N. H., Youn, B. and Webb, R. L., 1999, 'Air-Side Heat Transfer and Friction Correlation for Plain Fin and Tube Heat Exchangers with Staggered Tube Arrangements,' J. Heat Transfer, Vol. 121, pp. 662-667 https://doi.org/10.1115/1.2826030
  4. Wang, C. C., Chi, K. Y. and Chang, C. J., 2000, 'Heat Transfer and Friction Characteristics of Plain Fin-and-Tube Heat Exchangers, part I: New Experimental Data,' Int. J. Heat Mass Trans., Vol. 43, pp. 2681-2691 https://doi.org/10.1016/S0017-9310(99)00332-4
  5. Wang, C. C., Chi, K. Y. and Chang, C. J., 2000, 'Heat Transfer and Friction Characteristics of Plain Fin-and-Tube Heat Exchangers, part II: Correlation,' Int. J. Heat Mass Trans., Vol. 43, pp. 2693-2700 https://doi.org/10.1016/S0017-9310(99)00333-6
  6. Yoon, Y. H., Paeng, J. G. and Yoon, K. S., 2006, 'Experimental Measurement and Numerical Computation on the Air-Side Forced Convective Heat Transfer Coefficient in Plate Fin-Tube Exchangers,' Society of Air-Conditioning and Refrigerating Engineers of Korea, Vol. 10, No. 9, pp. 729-737
  7. Moh, J. H. and Lee, S. H., 2007, 'Numerical Analysis for the Air-Side Convective Heat Transfer Characteristics in a Compact Heat Exchangers with Circular Tubes and Continuous Plate Fins,' Journal of KSME B, Vol. 31, No. 12, pp. 994-1001 https://doi.org/10.3795/KSME-B.2007.31.12.994
  8. Park, K. W. and Pak, H. Y., 2000, 'Flow and Thermal Analyses for the Optimal Specification of Flat Tube at Radiator,' Journal of KSME B, Vol. 24, No. 8, pp. 1046-1055
  9. Fiebig, M, Valencia, A. and Mitra NK., 1994, 'Local Heat Transfer and Flow Losses in Fin-Tube Heat Exchanger with Vortex Generators: a com- parison of Round and Flat Tubes,', Exp Therm. Fluid Sci. 8, pp. 35-45 https://doi.org/10.1016/0894-1777(94)90071-X
  10. Wang, L. B., Ke, F., Gao. S. D. and Mei, Y. G., 2002, 'Local and Average Characteristics of Heat/Mass Transfer over Flat Tube Bank Fin with Four Vortex Generators per Tube,' J. Heat Trans fer ASME Trans., Vol. 124, pp. 546-552 https://doi.org/10.1115/1.1423905
  11. Shi, B, Wang, L., Gen, F. and Zhang, Y., 2006, 'The Optimal Fin Spacing for Three-Row Flat Tube Bank Fin Mounted with Vortex Genera- tors,' Heat Mass Transfer, Vol. 43, pp. 91-101 https://doi.org/10.1007/s00231-006-0093-y
  12. Yoo, S. Y., Chung, M. H., Park, D. S. and Lee, S. S., 2002, 'An Experimental Study on the Local and Overall Heat Transfer Characteristics of a Fin-Flat Tube Heat Exchangers,' Society of Air-Conditioning and Refrigerating Engineers of Korea, Vol. 10, No. 9, pp. 729-737
  13. Moh, J. H., 2008, 'Numerical Analysis for the Air-Side Convective Heat Transfer Characteristics in a Compact Heat Exchangers with Flat Tubes and Plate Fins According to the Aspect Ratio,' Journal of KSME B, Vol. 32, No. 9, pp. 695-703 https://doi.org/10.3795/KSME-B.2008.32.9.695
  14. FLUENT User's Guide Volume, Version 6.1, Fluent Inc
  15. Patankar, S. V., 1980, Numerical Heat Transfer and Fluid Flow, McGraw Hill

Cited by

  1. Convective Heat Transfer Correlations for the Compact Heat Exchanger with Circular Tubes and Flat Tubes-Plate Fins vol.34, pp.3, 2010, https://doi.org/10.3795/KSME-B.2010.34.3.291