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在流动传热基础试验平台上进行了矩形通道干涸后膜态沸腾的传热试验,研究了各种热工水力参数对膜态沸腾传热的影响特性.结果表明:干涸后膜态沸腾是一个相对稳定的传热过程,其壁面温度不会出现明显的脉动;随着进口含汽率的增加,膜态沸腾热流密度减小,壁面温度升高,传热系数减小;随着质量流速的增大或系统压力的升高,膜态沸腾热流密度增大,壁面温度降低,传热系数增大.
The heat transfer experiment of membrane boiling after rectangular channel dryout was carried out on the basement of flow and heat transfer test, and the influence of various thermal hydraulic parameters on the membrane boiling heat transfer was studied. The results show that membrane boiling is a Relatively stable heat transfer process, the wall temperature does not appear obvious pulsation; With the increase of the inlet steam content, membrane boiling heat flux density decreases, the wall temperature increases, the heat transfer coefficient decreases; with the mass flow rate Increase or increase of system pressure, membrane boiling heat flux density increases, the wall temperature decreases, the heat transfer coefficient increases.