多组分流动沸腾传热研究

Study on multicomponent flow boiling heat transfer

多组分混合物流动沸腾传热系数算式中的液相传质系数，是描述传质阻力的关键参数，但是，当前既无合适的计算方法也无经验数据，只能借用物理和化学吸收传质系数的经验值。本文给出一个简化计算方法。用此法对有机水溶液系统进行预测计算，所得传热系数与实测值比较，其平均绝对偏差为１０．７２％。

The mass transfer coefficient of liquid phase in the calculation formula for multicomponent flow boiling heat transfer coefficient is a key parameter for describing mass resistance.However,there is neither suitable calculating method nor empirical data at present,it has to borrow empirical data of mass transfer coefficient for physical and chemical absorption.This article puts forward a simplified calculation method.When this method is used to calculate the heat transfer coefficient of organic water soluton,the mean absolute deviation of calculated value is 10.72%,as compared with the experimental data.