通过实验,分析细圆管的倾斜角度和管径对管内蒸气流动凝结换热的影响.利用实测的管壁温度变化,估计凝结液沿周向的分布.探讨不同倾角和管径条件下,重力作用影响凝结换热的机制.研究表明,在小尺度下,重力的影响受蒸气剪切力和表面张力作用而削弱,现有通行的关联式不适用于细圆管内的凝结换热.
参考文献
| [1] | Nusselt W .Die Oberfldchenkondensation des Wasserdampfes[J].VDI,1916,60:541-546. |
| [2] | Rose J W .Effect of Pressure Gradient in Force ConVection Film Condensation on a Horizontal Tube[J].International Journal of Heat and Mass Transfer,1984,27:39-47. |
| [3] | Suzuki K;Hagiwara Y;Izumi H .A Numerical Study of Forced-Convective Filmwise Condensation in a Vertical Tube[J].JSME International Journal Series B:Fluids and Thermal Engineering,1990,33:134-140. |
| [4] | Rohsenow W M;Weber J H;Ling A T .Effect of Vapor?Velocity on Laminar and Turbulent Film Condensation[J].Transactions of the ASME,1956,78:1637-1643. |
| [5] | Memory S B;Rose J W .Free Convection Laminar Film Condensation on a Horizontal Tube with Variable Wall Temperature[J].International Journal of Heat and Mass Transfer,1998,76:143-152. |
| [6] | Jaster H;Kosky P G .Condensation in Mixed Flow Regime[J].International Journal of Heat and Mass Transfer,1976,19:95-99. |
| [7] | Shah M M .A General Correaltion for Heat Transfer during Film Condensation indise Pipes[J].International Journal of Heat and Mass Transfer,1979,22:547-556. |
| [8] | Chen S L;Corner F M;Tien C L .Gereral Film Condensation Correaltions[J].Experimental Heat Transfer,1987,1:93-107. |
| [9] | Rohsenow W M .Film Condensation[J].Applied Mechanics Reviews,1970,23:487-496. |
| [10] | 王补宣;俞宇枫.小管径竖管外侧的凝结换热[A].北京:清华大学出版社,1993:137-145. |
| [11] | 王补宣,杜小泽.水平和竖直细圆管内流动凝结换热特性的对比研究[J].工程热物理学报,2000(01):66-70. |
| [12] | M. K. Dobson;J. C. Chato .Condensation in smooth horizontal tubes[J].Journal of heat transfer: Transactions of the ASME,1998(1):193-213. |
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