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实验以去离子水为工质,研究矩形窄通道内饱和沸腾起始点的影响因素。通过改变矩形板的壁面加热功率密度,工质的质量流量和入口温度分析饱和沸腾起始点的变化规律.实验得出:饱和沸腾段随着加热功率密度的增加而增加,随着质量流量的增加而缩短,随着入口温度的增加而增加,但入口温度在高加热功率密度时对饱和沸腾起始点的影响相对较小,在低加热功率密度下影响较大。
In the experiment, deionized water was used as the working fluid to study the influencing factors of the starting point of saturated boiling in narrow rectangular channels. The change law of the starting point of saturated boiling was analyzed by changing the heating power density, the mass flow rate and the inlet temperature of the rectangular plate, and the results showed that the saturated boiling phase increased with the increase of heating power density. With the increase of mass flow But shortened with the increase of inlet temperature. However, the influence of inlet temperature on the initial boiling point of saturated boiling at relatively high heating power density is relatively small, which is greatly affected by the low heating power density.