摘要
为了研究湿空气透平(HAT)循环湿化器内部气液两相间的传热传质规律,搭建了高压填料湿化器实验系统,并自主开发了加压气液两相温度和相对湿度测量装置,得到15个工况下湿化器内湿空气温度(气温)、水的温度(水温)以及相对湿度沿湿化器高度的分布规律,研究了水气比、进口水温对湿化器内湿化过程的影响规律。结果表明:气液两相温度分别沿流动方向先降低后升高,湿空气在湿化器底部就已达到饱和状态;水气比对湿化器性能和内部气液参数的影响较大,水气比增大,进口水温升高,同一位置的水温和气温均升高,总体加湿量增大;进口水温升高时,底部湿空气更快达到饱和状态。
To study the heat and mass transfer characteristics of gas-liquid two-phase flow in a humidifier of humid air turbine(HAT)cycle,an experimental system was established for the high pressure packing humidifier,while a measuring setup was developed for the temperature and relative humidity of pressurized humid air and water,based on which,the distribution of temperature and relative humidity along the height of the humidifier was obtained under 15working conditions,and the influence of water-gas ratio and inlet water temperature on the humidification process was studied.Results show that the temperature of both the humid air and the water decreases first and then increases along the flow direction,and the humid air has already reached the saturation state at the bottom of the humidifier.The water-gas ratio has a great influence on the humidifier performance and its inner two phase parameters.With the increase of water-gas ratio and inlet water temperature,the temperature of water and air increases at the same location,resulting in increased overall humidification amount.The higher the inlet water temperature is,the earlier the humid air would reach the saturation state at the bottom of the humidifier.
作者
何鸣
张晴
王玉璋
HE Ming;ZHANG Qing;WANG Yuzhang(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2020年第5期379-384,共6页
Journal of Chinese Society of Power Engineering
基金
国家科技重大专项资助项目(2017-I-0009-0010)。
关键词
湿化器
气液两相
空气湿化
传热传质
humidifier
gas-liquid two-phase flow
air humidification
heat and mass transfer
