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

  • 제31권7호
  • /
  • Pages.604-610
  • /
  • 2007
  • /
  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지
DOI QR코드

DOI QR Code

하부 유로단면적이 수직 환상공간 내부 풀비등열전달에 미치는 영향

Effects of Bottom Inflow Area on Pool Boiling Heat Transfer in a Vertical Annulus

  • 발행 : 2007.07.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

To investigate effects of the inflow area on pool boiling heat transfer in a vertical annulus, the inflow area at its bottom has been changed from 0 to $1060.3mm^2$. For the test, a heated tube of 34 mm diameter and water at atmospheric pressure have been used. To elucidate effects of the inflow area on heat transfer results of the annulus are compared to the data of a single unrestricted tube. The change in the inflow area at the bottom of the annulus results in much variation in heat transfer coefficients. When the inflow area is $113.1mm^2$ the deterioration point of heat transfer coefficients gets moved up to the higher heat fluxes because of the convective flow at the bottom regions.

키워드

참고문헌

  1. Chun, M. H. and Kang, M. G., 1998, 'Effects of Heat Exchanger Tube Parameters on Nucleate Pool Boiling Heat Transfer,' ASME, J. Heat Transfer, Vol. 120, pp. 468-476 https://doi.org/10.1115/1.2824272
  2. Chung Y.J., Yang S.H., Kim H.C. and Zee S.Q., 2004, 'Thermal Hydraulic Calculation in a Passive Residual Heat Removal System of the SMART-P Plant for Forced and Natural Convection Conditions,' Nuclear Engineering and Design, Vol. 232, pp. 277-288 https://doi.org/10.1016/j.nucengdes.2004.07.002
  3. Yao, S.C. and Chang, Y., 1983, 'Pool Boiling Heat Transfer in a Confined Space,' Int. J. Heat Mass Transfer, Vol. 26, pp. 841-848 https://doi.org/10.1016/S0017-9310(83)80108-2
  4. Hung, Y.H. and Yao, S.C., 1985, 'Pool Boiling Heat Transfer in Narrow Horizontal Annular Crevices, ASME J. Heat Transfer, Vol. 107, pp. 656-662 https://doi.org/10.1115/1.3247474
  5. Kang, M.G., 2002, 'Pool Boiling Heat Transfer in Vertical Annular Crevices,' Int. J. Heat Mass Transfer, Vol. 45 No. 15, pp. 3245-3249 https://doi.org/10.1016/S0017-9310(02)00040-6
  6. Kang, M.G., 2006, 'Effects of Outer Tube Length on Pool Boiling in an Annulus with Closed Bottoms,' Trans. KSME B, Vol. 30, No. 8, pp. 746-755 https://doi.org/10.3795/KSME-B.2006.30.8.749
  7. Fujita, Y., Ohta, H., Uchida, S. and Nishikawa, K., 1988, 'Nucleate Boiling Heat Transfer and Critical Heat Flux in Narrow Space between Rectabgular Spaces,' Int. J. Heat Mass Transfer, Vol. 31, No. 2, pp. 229-239 https://doi.org/10.1016/0017-9310(88)90004-X
  8. Passos, J.C., Hirata, F.R., Possamai, L.F.B., Balsamo, M. and Misale, M., 2004, 'Confined Boiling of FC72 and FC87 on a Downward Facing Heating Copper Disk,' Int. J. Heat Fluid Flow, Vol. 25, pp. 313-319 https://doi.org/10.1016/j.ijheatfluidflow.2003.11.016
  9. Kang, M.G., 2006, 'Pool Boiling Heat Transfer in a Vertical Annulus with Controlled Inflow Area at its Bottom,' Int. J. Heat Mass Transfer, Vol. 49, pp. 3752-3756 https://doi.org/10.1016/j.ijheatmasstransfer.2006.03.030
  10. Kang, M.G., 2001, 'Hysteresis Effects in Pool Boiling of Water,' Trans. KSME B, Vol. 25, No. 8, pp. 1037-1045
  11. Rohsenow, W.M., 1952, 'A Method of Correlating Heat Transfer Data for Surface Boiling of Liquids,' ASME J. Heat Transfer, Vol. 74, pp. 969-976