摘要
为了研究不同因素对液滴蒸发效率的影响,本文搭建了喷雾降温系统实验平台,测试分析了单喷嘴作用下喷嘴孔径、环境温度对局部环境垂直温度、相对湿度的影响规律,揭示了喷嘴孔径、环境温度、喷雾时间等因素对液滴群蒸发效率的影响。结果表明:喷雾降温效果随着垂直高度的增加而减弱,液滴群在高度为1.5m左右发生分散现象;环境温度越高,液滴群的蒸发效率越高,喷雾降温效果越明显,在一定的喷嘴孔径和环境温度下,喷雾10min后液滴群的蒸发效率可达到84.8%。
In order to study the influence of different factors on the droplet evaporation efficiency,an experimental platform for the spray cooling system is built.The influences of nozzle aperture and ambient temperature on the vertical temperature and relative humidity of the local environment under the action of a single nozzle are analyzed.The effects of nozzle aperture,ambient temperature,and spray time on the evaporation efficiency of the droplet group are revealed.The results show that the spray cooling effect decreased with the vertical height,and the droplet group dispersed at a height of about 1.5 m.The evaporation efficiency of the droplet group increased with the ambient temperature.And the spray cooling effect was more obvious in high ambient temperature.Under a certain nozzle aperture and ambient temperature,the evaporation efficiency of the droplet group can reach 84.8%after spraying for 10 minutes.
作者
崔雁弼
孟晓静
胡亚年
CUI Yanbi;MENG Xiaojing;HU Yanian(School of Resource Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,Shaanxi,China)
出处
《制冷技术》
2023年第6期8-13,共6页
Chinese Journal of Refrigeration Technology
关键词
蒸发效率
单喷嘴
垂直温度
喷雾时间
降温效果
Evaporation efficiency
Single nozzle
Vertical temperature
Spray time
Cooling effects
作者简介
孟晓静(1982-),女,教授,博士。研究方向:工业建筑通风及热环境研究。联系地址:陕西省西安市碑林区雁塔路13号西安建筑科技大学,邮编710055。联系电话:13468705330。E-mail:meng_020929@163.com。
