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

  • 제29권2호
  • /
  • Pages.169-179
  • /
  • 2005
  • /
  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지
DOI QR코드

DOI QR Code

포화상태 풀비등시 단일기포의 성장에 관한 연구

Study on the Single Bubble Growth During Nucleate Boiling at Saturated Pool

  • 김정배 (한국에너지기술연구원 신재생에너지연구부) ;
  • 이한춘 (엘지전자 DA 연구소) ;
  • 오병도 (포항공과대학교 기계공학과 연구원) ;
  • 김무환 (포항공과대학교 기계공학과)
  • 발행 : 2005.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Nucleate boiling experiments on heating surface of constant wall temperature were performed using R113 for almost saturated pool boiling conditions. A microscale heater array and Wheatstone bridge circuits were used to maintain a constant wall temperature condition of heating surface and to measure the heat flow rate with high temporal and spatial resolutions. Bubble images during the bubble growth were taken as 5000 frames per second using a high-speed CCD camera synchronized with the heat flow rate measurements. The bubble growth behavior was analyzed using the new dimensionless parameters for each growth regions to permit comparisons with previous experimental results at the same scale. We found that the new dimensionless parameters can describe the whole growth region as initial and later (thermal) respectively. The comparisons showed good agreement in the initial and thermal growth regions. In the initial growth region including surface tension controlled, transition and inertia controlled regions as divided by Robinson and Judd, the bubble growth rate showed that the bubble radius was proportional to $t^{2/3}$ regardless of working fluids and heating conditions. And in the thermal growth region as also called asymptotic region, the bubble showed a growth rate that was proportional to $t^{1/5}$, also. Those growth rates were slower than the growth rates proposed in previous analytical analyses. The required heat flow rate for the volume change of the observed bubble was estimated to be larger than the heat flow rate measured at the wall. Heat, which is different from the instantaneous heat supplied through the heating wall, can be estimated as being transferred through the interface between bubble and liquid even with saturated pool condition. This phenomenon under a saturated pool condition needs to be analyzed and the data from this study can supply the good experimental data with the precise boundary condition (constant wall temperature).

키워드

참고문헌

  1. Robinson, A. J. and Judd, R. L., 2001, 'Bubble Growth in a Uniform and Spatially Distributed Temperature Field,' Int. J. of Heat Mass Transfer, Vol. 44, pp. 2699-2710 https://doi.org/10.1016/S0017-9310(00)00294-5
  2. Han, C. H. and Griffith, P., 1965, 'The Mechanism of Heat Transfer in Nucleate Pool Boiling-Part I Bubble Initiation, Growth and Departure,' Int. J. Heat Mass Transfer, Vol. 8, pp. 887-904 https://doi.org/10.1016/0017-9310(65)90073-6
  3. Cole, R. and Shulman, H. L., 1966, 'Bubble Growth Rates at High Jakob Numbers,' Int. J. Heat Mass Transfer, Vol. 9, pp. 1377-1390 https://doi.org/10.1016/0017-9310(66)90135-9
  4. Rule, T. D. and Kim, J., 1999, 'Heat Transfer Behavior on Small Horizontal Heaters During Pool Boiling,' J. of Heat Transfer, Vol. 121, No.2, pp. 386-393 https://doi.org/10.1115/1.2825991
  5. Lee, J., Kim, J. and Kiger, K. T., 2001, 'Time-and Space-Resolved Heat Transfer Characteristics of Single Droplet Cooling using Microscale Heater Arrays,' Int. J. of Heat and Fluid Flow, Vol. 22, pp. 188-200 https://doi.org/10.1016/S0142-727X(00)00082-5
  6. Kim, J., Benton, J. F. and Wisniewski, D., 2002, 'Pool Boiling Heat Transfer on Small Heaters: Effect of Gravity and Subcooling,' Int. J. of Heat and Mass Transfer, Vol. 45, pp. 3919-3932 https://doi.org/10.1016/S0017-9310(02)00108-4
  7. Bae, S. W., Lee, H. C. and Kim, M. H., 2000, 'Wall Heat Flux Behavior of Nucleate Pool Boiling Under a Constant Temperature Condition in a Binary Mixture System,' Trans. of the KSME (B), Vol. 24, No.9, pp. 1239-1246
  8. Rayleigh, J. W. S., 1917, 'On the Pressure Developed in a Liquid During the Collapse of a Spherical Cavity,' Philos. Mag., Vol. 34, pp. 94-98 https://doi.org/10.1080/14786440808635681
  9. 'Boiling Phenomena' by S. van Stralen, 1979, McGraw-Hill
  10. Plesset, M. S. and Zwick, S. A., 1954, 'The Growth of Vapor Bubbles in Superheated Liquids,' J. of Applied Physics, Vol. 25, No. 4, pp. 493-500 https://doi.org/10.1063/1.1721668
  11. Forster, H. K. and Zuber, N., 1954, 'Growth of a Vapor Bubble in a Superheated Liquid,' Journal of Applied Physics, Vol. 25, pp. 474-478 https://doi.org/10.1063/1.1721664
  12. Mikic, B. B. and Rohsenow, W. M., 1969, 'Bubble Growth Rates in Non-Uniform Temperature Field,' Progress in Heat and Mass Transfer II, pp. 283-293
  13. Mikic, B. B., Rohsenow, W. M. and Griffith, P., 1970, 'On Bubble Growth Rates,' Int. J. Heat Mass Transfer, Vol. 13, pp. 657-666 https://doi.org/10.1016/0017-9310(70)90040-2
  14. Zuber, N., 1961, 'The Dynamics of Vapor Bubbles in Nonuniform Temperature Fields,' Int. J. Heat Mass Transfer, Vol. 2, pp. 83-98 https://doi.org/10.1016/0017-9310(61)90016-3
  15. Sernas, V. and Hooper, F. C., 1969, 'The Initial Vapor Bubble Growth on a Heated Wall During Nucleate Boiling,' Int. J. Heat Mass Transfer, Vol. 12, pp. 1627-1639 https://doi.org/10.1016/0017-9310(69)90097-0
  16. Hooper, F. C. and Abdelmessih, A. H., 1966, 3rd Intl. Heat Tr. Conf. Chicago
  17. 'A Theoretical Study on Bubble Growth in Constant and Time-Dependent Pressure Fields' by T. Theofanous, L. Biasi, H. S. Isbin and H. Fauske, 1969, Chemical Engineering Science, Vol. 24, pp. 885-897 https://doi.org/10.1016/0009-2509(69)85008-6
  18. Lee, H. C., Oh, B. D., Bae, S. W. and Kim, M. H., 2003, 'Single Bubble Growth in Saturated Pool Boiling on a Constant Wall Temperature Surface,' Int. J. of Multiphase Flow, Vol. 29, No. 12, pp. 1857-1874 https://doi.org/10.1016/j.ijmultiphaseflow.2003.09.003
  19. Bae, S. W., Kim, J. and Kim, M. H., 1999, 'Improved Technique to Measure Time and Space Resolved Heat Transfer Under Single Bubbles During Saturated Pool Boiling of FC-72,' Experimental Heat Transfer, Vol. 12, No. 3, pp. 265-279 https://doi.org/10.1080/089161599269726
  20. Kim, J., Lee, H. C., Oh, B. D. and Kim, M. H., 2004, 'Effects of Bubble Shape Assumption on Single Bubble Growth Behavior in Nucleate Pool Boiling,' J. of Flow Visualization and Image Processing, Vol. 11, pp. 1-15 https://doi.org/10.1615/JFlowVisImageProc.v11.i1.50
  21. Fontana, D. M., 1972, 'Simultaneous Measurement of Bubble Growth Rate and Thermal Flux from the Heating Wall to the Boiling Fluid near the Nucleation Site,' Int. J. Heat Mass Transfer, Vol. 15, pp. 707-720 https://doi.org/10.1016/0017-9310(72)90114-7
  22. Koffman, L. D. and Plesset, M. S., 1983, 'Experimental Observation of the Microlayer in Vapor Bubble Growth on a Heated Solid,' J. of Heat Transfer, Vol. 105, pp. 625-632 https://doi.org/10.1115/1.3245631
  23. van Stralen, S. J. D., Sohal, M. S., Cole, R. and Sluyter, W. M., 1975, 'Bubble Growth Rates in Pure and Binary Systems: Combined Effect of Relaxation and Evaporation Microlayers,' Int. J. Heat Mass Transfer, Vol. 18, pp. 453-467 https://doi.org/10.1016/0017-9310(75)90033-2