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

  • 제23권3호
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  • Pages.179-187
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  • 2011
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
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낮은 핀 표면과 Turbo-B 촉진 표면에서 임계 열유속까지의 풀 비등 열전달계수

Pool Boiling Heat Transfer Coefficients Up to Critical Heat flux on Low-fin and Turbo-B Surfaces

  • 이요한 (인하대학교 기계공학과 대학원) ;
  • 정동수 (인하대학교 기계공학과)
  • 투고 : 2010.10.22
  • 심사 : 2011.01.04
  • 발행 : 2011.03.10
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초록

In this work, nucleate pool boiling heat transfer coefficients(HTCs) of 5 refrigerants of differing vapor pressure are measured on horizontal low fin and Turbo-B square surfaces of 9.53 mm length. Tested refrigerants are R32, R22, R134a, R152a and R245fa and HTCs are taken from 10 $kW/m^2$ to critical heat fluxes for all refrigerant at $7^{\circ}C$. Wall and fluid temperatures are measured directly by thermocouples located underneath the test surface and in the liquid pool. Test results show that Critical heat fluxes(CHFs) of all enhanced surfaces are greatly improved as compared to that of a plain surface in all tested refrigerants. CHFs of all refrigerants on the 26 fpi low fin surface are increased up to 240% as compared to that of the plain surface. HTCs on both low fin and Turbo-B surfaces increase with heat flux. After certain heat flux, however, they decrease. CHFs of the Turbo-B enhanced surface are lower than that of the 26 fpi low fin surface. This phenomenon is due to the difference in surface structure of the low fin and Turbo-B surface.

키워드

참고문헌

  1. Webb, R. J., 1994, Principles of enhanced heat transfer, John Wiley and Sons. Inc., New York, pp. 311-372.
  2. Benjamin, J. E. and Westwater, J. W., 1961, Bubble Growth in Nucleate Boiling of a Binary Mixture, Int. Development in Heat Transfer, ASME, New York, pp. 212-218.
  3. Webb, R. L. and Pais, C., 1992, Nucleate pool boiling data for five refrigerants on plain, integral-fin and enhanced tube geometries, Int. J. Heat Mass Transfer, Vol. 35, No. 8, pp. 1893-1904. https://doi.org/10.1016/0017-9310(92)90192-U
  4. Tatara, R. A. and Payvar, P., 2000, Pool boiling of pure R134a from a single Turbo-BIIHP tube, Int. J. Heat and Mass Transfer, Vol. 43, pp. 2233-2236. https://doi.org/10.1016/S0017-9310(99)00294-X
  5. Chen, Q., Windisch, R. and Hahne, E., 1989, Pool boiling Heat Transfer on Finned Tubes, Proc. Eurotherm Seminar, Advances in Pool Boiling Heat Transfer, Paderborn, FRG, Vol. 8.
  6. Hahne, E., Qiu-Rong, C. and Windisch, R., 1991, Pool boiling heat transfer on finned tubes-an experimental and theoretical study, Int. J. Heat Mass Transfer, Vol. 34, pp. 2071-2079. https://doi.org/10.1016/0017-9310(91)90218-4
  7. Kim, J. H., T. H., Jung, D. and Kim, C. B., 1995, Pool boiling heat transfer characteristics of low-fin tubes in CFC11, HCFC123 and HC FC141b, Transaction of KSME(B), Vol. 19, No. 9, pp. 2316-2327.
  8. Park, J. S., Kim, J. G., Jung, D., and Kim, Y. I., 2001, Pool boiling heat transfer coefficients of new refrigerants on various enhanced tubes, Korea Journal of Air-Conditioning and Refrigeration Engineering, Vol. 13, No. 8, pp. 710-719.
  9. Park, K. J. and Jung, D., 2008, Pool boiling heat transfer coefficients up to critical heat flux, Korea Journal of Air-Conditioning and Refrigeration Engineering, Vol. 20, No. 9, pp. 571-580.
  10. Kline, S. J. and McClintock, F. A., 1953, Describing uncertainties in single-sample experiments, Mechanical Engineer, Vol. 75, pp. 3-8.
  11. Lemmon, E. W., Huber, M. L. and McLinden, M. O., 2007, NIST Reference fluid thermodynamics and transport properties, REFPROP version 8.0.
  12. Webb, R. L. and Pais, C., 1992, Nucleate pool boiling data for five refrigerants on plain, integral- fin and enhanced tube geometries, Int. J. Heat Mass Transfer, Vol. 35, No. 8, pp. 1893-1904. https://doi.org/10.1016/0017-9310(92)90192-U
  13. Gorenflo, D. and Fath, W., 1987, Pool boiling heat transfer on the outside of finned tubes at high saturation pressures, Proc. 17th Int. Congr. Refrig., pp. 955-960.

피인용 문헌

  1. Pool Boiling Heat Transfer Coefficients of R1234yf on Various Enhanced Surfaces vol.25, pp.3, 2013, https://doi.org/10.6110/KJACR.2013.25.3.143
  2. Heat Transfer Characteristics of Spray Cooling up to Critical Heat Flux on a Low-fin Enhanced Surface vol.25, pp.9, 2013, https://doi.org/10.6110/KJACR.2013.25.9.522
  3. Heat Transfer Characteristics of Spray Cooling Up to Critical Heat Flux on Thermoexcel-E Enhanced Surface vol.28, pp.9, 2016, https://doi.org/10.6110/KJACR.2016.28.9.373