摘 要：基于以丙酮为工质的三角形截面微通道饱和沸腾传热的实验数据，通过最小二乘法对实验数据进行参数拟合，得到一组新的经验参数,结合Thome提出的预测圆形截面微通道饱和沸腾传热系数的三区模型，对微通道饱和沸腾的传热系数进行了预测。结果表明：该三区模型可以较好地预测出传热系数随着干度的变化趋势，并得到90.04%的实验值和预测值误差在30%之内，吻合度较好。

Abstract:Based on experimental data of saturated boiling heat transfer in triangular crosssection microchannels using acetone as the working medium.A new set of empirical parameters was obtained via parameter fitting with the least squares method.With the prediction method,three-zone model for the circular cross-section michrochannels proposed by Thome,the saturated boiling heat transfer coefficient of triangular cross-section microchannels was predicted.The results showed that the three-zone model can predict the trend of the heat transfer coefficient with the dryness,and the 90.04% of experimental values and the predicted values has an error within 30%,indicating good agreement.

TK512+.4