Experimental study of falling film evaporation heat transfer on superhydrophilic horizontal-tubes at low spray density
Experimental study of falling film evaporation heat transfer on superhydrophilic horizontal-tubes at low spray density
复制标题
低喷雾密度超亲水水平管降膜蒸发换热实验研究
DOI：
10.1016/j.applthermaleng.2016.07.177
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发表时间：
2017-01
影响因子：
6.4
通讯作者：
Qianqing Liang
中科院分区：
文献类型：
--
作者：
Yi Zheng;Xuehu Ma;Yun Li;Rui Jiang;Kai Wang;Zhong Lan;Qianqing Liang
本文介绍了一系列有关垂直排水平管降膜蒸发器传热的实验。通过可视化和传热实验，研究了亲水改性对不同管子（超亲水管、亲水管和光管）管间流型和蒸发传热性能的影响。可视化结果表明，本研究实现了液滴、液滴/射流、射流和射流/片材四种流动模式，并且亲水改性对流动模式转变影响很小。实验表明，在低喷雾密度下，超亲水管和亲水管被完全润湿，而普通管被部分润湿。传热结果表明，超亲水管可以在很宽的流速范围（Res从60到700）下保持较高的传热系数。同时，在低喷雾密度下实现了高增强，在该密度下，光管不被润湿。当Res达到350时，三个表面具有相似的传热性能。同时，加热水入口温度对超亲水管的传热系数影响不大，对光管和低喷淋密度的亲水管有负面影响。
This paper presents a series of experiments concerning heat transfer in a vertical row of horizontal-tube falling film evaporator. By visualization and heat transfer experiments, the effects of hydrophilic modification on the inter-tube flow patterns and evaporation heat transfer performance on different tubes, the superhydrophilic, hydrophilic and plain tubes, were investigated. The visualization results indicated that four flow patterns, droplet, droplet/jet, jet and jet/sheet mode was achieved in this study and the hydrophilic modification has little effect on flow mode transition. Experiments have been indicated that the superhydrophilic and hydrophilic tubes were completely wetted while the plain tubes were partially wetted at low spray density. The heat transfer results demonstrated that superhydrophilic tubes could maintain a high heat transfer coefficient at a wide range of flow rates (Resfrom 60 to 700). While, high enhancement was achieved at low spray density, at which the plain tube was not be wetted. When Resreached 350, three surfaces had the similar heat transfer performance. Simultaneously, the heating water inlet temperature had little effect on heat transfer coefficient for superhydrophilic tubes and had a negative influence on plain tubes and hydrophilic tubes at low spray density.
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影响因子：
6.4
作者：
A. Abed;M. Alghoul;M. H. Yazdi;A. Al-Shamani;K. Sopian
通讯作者：
A. Abed;M. Alghoul;M. H. Yazdi;A. Al-Shamani;K. Sopian
影响因子：
3.2
作者：
J. Ibarra-Bahena;R. J. Romero
通讯作者：
J. Ibarra-Bahena;R. J. Romero
影响因子：
--
作者：
M. Chyu;A. Bergles
通讯作者：
M. Chyu;A. Bergles
DOI：
10.1002/(sici)1520-6556(1998)27:8
发表时间：
1996-10
期刊：
--
影响因子：
--
作者：
Y. Fujita;M. Tsutsui
通讯作者：
Y. Fujita;M. Tsutsui
DOI：
10.1016/0017-9310(64)90042-0
发表时间：
1961-09
期刊：
--
影响因子：
--
作者：
D. Hartley;W. Murgatroyd
通讯作者：
D. Hartley;W. Murgatroyd