Droplet evaporation with reference to the effectiveness of water-mist cooling
Droplet evaporation with reference to the effectiveness of water-mist cooling
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DOI：
10.1016/j.apenergy.2006.09.007
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发表时间：
2007-04
期刊：
影响因子：
11.2
通讯作者：
H. Barrow;C. Pope
中科院分区：
文献类型：
--
作者：
H. Barrow;C. Pope
本文对湿空气中球形水滴的传热传质进行了简单的理论分析，并结合铁路隧道和其他系统中可能使用的喷雾或雾化冷却。特别是，研究了液滴的温度和直径的历史，以及完全蒸发时间(或寿命)与初始尺寸的关系。以自由落体液滴的停留时间为测量基础，研究了液滴在特定环境(如隧道)中的寿命与最长停留时间之间的关系。
A simple theoretical analysis of heat-and-mass transfer to a spherical water-droplet moving in humid air has been made, in connection with the possible use of spray or mist cooling in railway tunnels and other systems. In particular, the histories of the temperature and diameter of the droplet, and the dependence of the time of complete evaporation (or life-time) on the initial size have been studied. The relationships between life-time and the maximum time the droplet may be air borne in the particular environment, (such as a tunnel), has been investigated using the settling time of a freely-falling droplet as a basis of measurement.