Condensing droplet behaviors on fin surface under dehumidifying condition. Part II: Experimental validation
Condensing droplet behaviors on fin surface under dehumidifying condition. Part II: Experimental validation
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DOI：
10.1016/j.applthermaleng.2015.05.088
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发表时间：
2016-07
影响因子：
6.4
通讯作者：
D. Zhuang;G. Ding;Haitao Hu;H. Fujino;S. Inoue
中科院分区：
文献类型：
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作者：
D. Zhuang;G. Ding;Haitao Hu;H. Fujino;S. Inoue
本文的目的是验证本研究的第一部分中提出的冷凝液滴行为的数值模型。搭建了从翅片表面观察液滴行为的实验装置，采用新设计的试验段和试样，拍摄了冷凝过程的可视化图像。实验条件包括入口空气速度在0.5 m/s至3.5 m/s的范围内，ReD覆盖在500至3500的范围内，入口空气温度在27 °C至35 °C的范围内，入口空气RH在50%至90%的范围内，以及入口水温在6 °C至18 °C的范围内。可视化图像以及在本研究中获得的传热和传质特性的实验数据用于模型验证。验证结果表明，液滴行为预测与可视化图像定性吻合，传质j因子预测与实验数据的吻合率在± 25%以内为89%，传热j因子预测与实验数据的吻合率在± 20%以内为94%.
The objective of this paper is to validate the numerical model of condensing droplet behaviors proposed in Part I of the present study. An experimental rig for visualizing the droplet behaviors from the front view of the fin surface was built, and the visualization images of the condensing process was captured by employing a newly designed test section and sample. Experimental conditions cover inlet air velocity over a range from 0.5 m/s to 3.5 m/s,ReDcover a range from 500 to 3500, inlet air temperature over a range from 27 °C to 35 °C, inlet airRHover a range from 50% to 90%, and inlet water temperature over a range from 6 °C to 18 °C. The visualization images as well as the experimental data of heat and mass transfer characteristics obtained in the present study were used for the model validation. The validation results show that, the predicted droplet behaviors can qualitatively agree with the visualization images; the predicted mass transfer j factor agrees with 89% of the experimental data within a deviation of ±25%, and the predicted heat transfer j factor agrees with 94% of the experimental data within a deviation of ±20%.