高温表面喷雾冷却传热系数的理论分析

Analysis of spray cooling heat transfer coefficient on high temperature surface

以池内膜态沸腾为基础 ,将喷雾颗粒的冲击作为一种扰动 ,对喷雾冷却过程进行了建模 ,分析了水流密度、高温表面温度、雾滴尺寸、雾滴冲击速度对喷雾冷却换热系数的影响。并以一种全锥喷嘴为例 ,利用该模型进行了计算、分析 ,结果证实该模型对实际应用具有一定的指导作用。

Based on the pool film boiling,the spray was regard as the disturbance on it.Spry cooling model was set up.The effects of water density,high surface temperature,droplet dimension and droplet velocity on spray cooling heat transfer coefficient were analyzed.Calculation and analysis of a type of cone-shaped nozzle were done by this model.The result proved was instructive in actual application.