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

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

DOI QR Code

Study on Correlation of Droplet Flow Rate and Film Boiling Heat Transfer in Spray Cooling

액적 유량과 분무냉각 막비등 열전달의 상관관계에 관한 연구

  • 윤승민 (안동대학교 대학원 기계공학부) ;
  • 김영찬 (안동대학교 기계공학부)
  • Published : 2007.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

A new correlation between the Nusselt number based on modified heat transfer coefficient and Reynold number based on droplet-flow-rate was developed for the experimental data. The modified heat transfer coefficient was defined as ratio of wall heat flux to droplet subcooling. In the previous reports, the local heat flux of spray cooling in the film boiling region was experimentally investigated for the water spray region of $D_{max} = 0.0007{\sim}0.03m^3/(m^2s)$ . In the region near the stagnation point of spray flow, a new heat transfer correlation is recommended which shows good predictions for the water spray region of $D_x{\le}0.01m^3/(m^2s)$.

Keywords

References

  1. Bolle, L. and Moureau, J. C., 1978, 'Spray Cooling of Hot Surface,' Multiple Science and Technology, pp. 76-90
  2. Muller, H. and Jescher, R., 1973, 'Investigation of the Heat Transfer in a Simulated Secondary Cooling Zone in the Continuous Casting Process,' Arch Eisenhuttenwes, Vol.44-8, pp. 589-594
  3. Ohkubo, H. and Nishio, S., 1990, 'Study on Accurate Prediction of Heat Transfer Characters of Mist Cooling,' JSME International Journal, Vol. 33-2, pp. 326-33
  4. Kim, Y. C., Nishio, S. and Ohkubo, H., 1994, 'Spray Cooling with Formation of Liquid Film Flow : Distribution of Heat Transfer Coefficient in High Temperature Region,' Trans. of the JSME, Vol.60-574, pp. 2158-2164
  5. Kim, Y. C. , 2005, 'Study on Film Boiling Heat Transfer of Spray Cooling in Dilute Spray Region,' Trans. of the KSME(B), Vol. 29-2, pp. 279-286 https://doi.org/10.3795/KSME-B.2005.29.2.279
  6. Kim, Y. C. , 2006, 'Study on Film Boiling Heat Transfer of Spray Cooling in Air-Water Full Cone Spray System,' Proceeding of the KSME 2006 Spring Annual Meeting, pp. 2611-2616
  7. Wang, B. X. and Shi, D. H., 1985, 'A Semiempirical Theory for Forced-flow Turbulent Film Boiling of Subcooled Liquid along a Horizontal Plate,' Int. J. of Heat & Mass Transfer, Vol. 28-8, pp. 1499-1505 https://doi.org/10.1016/0017-9310(85)90252-2
  8. Kim, Y. C., Nishio, S. and Ohkubo, H., 1996, 'Spray Cooling with Formation of Liquid Film : Film Boiling Heat Transfer of Liquid Flim Flow,' Trans. of the JSME, Vol. 62-594, pp. 734-739
  9. Nishio, S. and Kim, Y. C., 1998, 'Heat Transfer of Dilute Spray Impinging on Hot Surface,' Int. J. of Heat & Mass Transfer, Vol. 41, pp. 4113-4119 https://doi.org/10.1016/S0017-9310(98)00150-1
  10. Shoji, S., Wakunaga, T. and Kodama, K., 1984, 'Heat Transfer between Hot Surface and Impinging Subcooled Droplet,' Trans. of the JSME, Vol. 50(B), pp. 716-723
  11. Ito, T., Takata, Y. and Mousa, M. M., 1992, 'Study on the Water Cooling of Hot Surface (Analysis of Spray Cooling in the Region Associated with Film Boiling),' JSME Int. J. Series 2, pp. 589-597
  12. Kim, Y. C., Nishio, S. and Ohkubo, H., 1996, 'Heat Transfer in High Temperature Region of Spray Cooling Interacting with Liquid Film Flow,' Trans. of the JSME, Vol. 62-597, pp. 1991-1997

Cited by

  1. Experimental Study of Evaporation of Nanofluid Droplet vol.37, pp.7, 2013, https://doi.org/10.3795/KSME-B.2013.37.7.647