热流密度对螺纹管内超临界压力水传热影响研究

Study on the Effect of Heat Flux on Heat Transfer of Supercritical Water in Internally-ribbed Tubes

对比分析了热流密度变化对倾斜上升与垂直上升内螺纹管内超临界压力水传热特性的影响。结果表明:倾斜与垂直的内螺纹管内超临界压力水的传热差别随着热流密度的增加而增加;热流密度的变化对倾斜内螺纹管内超临界压力水的传热特性的影响比其对垂直内螺纹管内超临界水的传热特性的影响更为显著。

The effect of heat flux on heat transfer of supercritical water（SCW） in inclined upward internally-ribbed tubes and in vertical upward internally-ribbed tubes were analyzed in this paper.It is found that the difference between the heat transfer of SCW in inclined upward internally-ribbed tubes and that in vertical upward internally-ribbed tubes increases with the increase in heat flux.The impact of heat flux on the heat transfer of SCW in inclined upward internally-ribbed tubes is more significant than that in vertical upward internally-ribbed tubes.