Condensation Measurement of Horizontal Cocurrent Steam/Water Flow
Condensation Measurement of Horizontal Cocurrent Steam/Water Flow
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DOI：
10.1115/1.3246689
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发表时间：
1984-05
影响因子：
--
通讯作者：
I. Lim;R. S. Tankin;M. Yuen
中科院分区：
文献类型：
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作者：
I. Lim;R. S. Tankin;M. Yuen
研究了常压并流水平通道中水蒸气在过冷水层上的冷凝过程。换热系数从1.3kWS/m/sup 20/C变化到20kW/m/sup 20/C，这取决于液体界面是光滑的还是波状的，并且随着蒸汽流量和水流量的增加而增加。在所有情况下，50%到90%的蒸汽在距离入口1.2米的范围内凝结。对于光滑和波状界面流动，平均Nusselt数与平均水汽雷诺数和平均液体普朗特数相关。最后，得到了波状界面流的平均换热系数和冷凝率随进口条件和下游距离变化的关系式。
Condensation of steam on a subcooled water layer was studied in a cocurrent horizontal channel at atmospheric pressure. The heat transfer coefficients were found to vary from 1.3 kWS/m/sup 20/C to 20 kW/m/sup 20/C, depending on whether the liquid interface was smooth or wavy, increased with increasing steam flow rates and water flow rates. For all cases, 50 to 90 percent of the steam condensed within 1.2 m from the entrance. The average Nusselt numbers were correlated with average steam and water Reynolds numbers an average liquid Prandtl numbers, for both smooth and wavy interface flows. Finally, a correlation of the average heat transfer coefficient and condensation rate for wavy interface flow was obtained as a function of inlet conditions and distance downstream.