Experimental study of falling film evaporation in large scale rectangular channel

被引:21
作者
Huang, X. G. [1 ]
Yang, Y. H. [1 ]
Hu, P. [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China
关键词
Evaporation; Falling film; Surface wave; Large scale test; PCCS; MASS-TRANSFER; HEAT-TRANSFER; CONDENSATION; ENHANCEMENT; INTERFACE; ANALOGY; FLOW;
D O I
10.1016/j.anucene.2014.09.053
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
The falling film evaporation in a large scale rectangular channel is experimentally studied in this paper for the design and improvement of passive containment cooling system. The evaporation mass transfer coefficient h(D) is obtained by the evaporation rate and vapor partial pressure difference of film surface and air bulk. The experimental results indicate that increasing of air flow rate appears to enhance h(D), while the film temperature and film flow rate have little effect on h(D). Since the wave effect on evaporation is noticed in experiment, the evaporation mass transfer correlation including the wave effect is developed on the basis of heat and mass transfer analogy and experimental data. (C) 2014 Elsevier Ltd. All rights reserved.
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页码:237 / 242
页数:6
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