A Study on the High Temperature Region Heat Transfer Coefficients for the Spray Cooling of Hot Flat Plates

평판 분무냉각 시의 고온역 열전달계수에 관한 연구

  • 윤두호 (거창기능대학 기계설계과) ;
  • 오철 (한국해양대학교 기관시스템공학부) ;
  • 윤석훈 (한국해양대학교 기관시스템공학부)
  • Published : 2000.09.01

Abstract

In this paper, experiments investigating the high-temperature region heat transfer coefficients for the spray cooling of hot flat plates were performed by down spray water using flat spray nozzles. The heat transfer surface is made of copper and is 100mm in length and 40mm in width and 15mm in thickness. The experimental condition of spray are as follows: temperatures of the water droplets are T=20~$80^{\circ}C$ and droplets volume fluxes are D=0.001565~0.010438$m^3/m^2s$. Next, correlating equations for the heat transfer characteristics of spray cooling in the high temperature region are developed from the effects of droplets volume flux and the surface temperature of heat transfer plate.

Keywords

References

  1. 制27回 日本傳熱シソポジウム講演論文集 高溫加熱面のミスト冷却 林勇二郞;瀧本昭;安尾晃一
  2. Int. J. of Heat and Mass Transfer v.37 no.17 Analysis of subcooled turbulent film boiling on a moving isothermal surface J. Filippovic;R. Viskanta
  3. Int. J. of Heat and Mass Transfer v.32 no.11 Analysis on film boiling heat transfer of impacting sprays S.C. Yao
  4. Chemical Engineering Science v.21 The heat transfer from a hot wall to impinging mist droplets in the spheroidal state L.H.J. Wachters
  5. 日本機械學會論文集(B編) v.50 no.451 高溫加熱面と衝突サブク-ル液滴間の熱傳達 壓司正弘;通永隆夫;兒玉 健
  6. Int. J. of Heat and Mass Transfer v.42 Investigation of the cooling of hot walls by liquid water sprays M. Ciofalo;I.D. Piazza;V. Brucato
  7. 制22回 日本傳熱シソポジウム講演論文集 高溫面の水冷却に關する硏究 伊藤猛宏;高田保之;北村新三
  8. 液體顯熱と熱傳達分布に注目した噴霧冷却の硏究 金榮燦
  9. 鐵と鋼 v.79 no.4 ミスト冷却の高溫域熱傳達特性に及ぼす諸因子の榮響 とその評價法 大久保英敏;西尾茂文
  10. Int. J. of Heat and Mass Transfer v.30 no.2 Mechanisms of film boiling heat transfer of normally impacting sprays K.J. Choi;S.C. Yao
  11. 日本機械學會論文集(B編) v.63 no.612 高溫加熱面のミスト冷却に關する硏究 小坂曉夫;瀧本昭;林勇二郞
  12. 대한기계학회 춘계학술대회논문집(B) 스프레이에 의한 열간압연 롤의 냉각능 평가 이필종;김종근;이승홍
  13. Numerical heat transfer and fluid flow S.V. Patankar
  14. 대한기계학회 논문집 v.17 no.6 고온 강재의 담금질 열전달에 관한 연구 윤석훈;홍영표;김경근;김용모
  15. Metals handbook v.1 ASME(편)