实验研究了微细圆管内凝结换热特性,实验中采用四种不锈钢管,其内径范围为289～997μm.基于实验结果,分析了换热温差、蒸汽进口雷诺数Rein和管径对管内膜状凝结换热系数的影响,发现温差对管内膜状凝结换热的影响很小,Nu随蒸汽进口雷诺数Rein增加而增大,随管径减小而降低,而对流换热系数随管径减小而显著增大.
参考文献
| [1] | Tuckermann D B;Pease R F .High-Performance Heat Sinking for VLSI[J].IEEE Electron Device Letters,1981,2(05):126-129. |
| [2] | Ivanov O P;Mamchenko V O .Heat Transfer and DragDuring Condensation of Refrigerants in Narrow Vertical Passages[J].Heat Transfer-Soviet Research,1974,6(02):13-20. |
| [3] | Baklastov A M;Arkhipov L I;Ivanov A A .Condensation of Steam in Capillaries[J].Heat Transfer-Soviet Research,1977,9(03):96-100. |
| [4] | Yan Y Y;Lin T F .Condensation Heat Transfer and Pressure Drop of Refrigerant R134A in A small Pipie[J].International Journal of Heat and Mass Transfer,1999,42(04):697-708. |
| [5] | 杜小泽 .蒸气沿细小直径圆管流动凝结换热特性的研究[D].清华大学,1999. |
| [6] | Palm Bjorn .Heat Transfer in Microchannels[J].Microscale Thermophysical Engineering,2001,5(03):155-175. |
| [7] | J.R. Baird;D.F. Fletcher;B.S. Haynes .Local condensation heat transfer rates in fine passages[J].International Journal of Heat and Mass Transfer,2003(23):4453-4466. |
| [8] | T. S. Zhao;Q. Liao .Theoretical analysis of film condensation heat transfer inside vertical mini triangular channels[J].International Journal of Heat and Mass Transfer,2002(13):2829-2842. |
| [9] | Wang Huasheng;Rose John W.Condensation in Microchannels[A].北京,2004:22-31. |
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