针对去离子水池沸腾传热系数(HTC)预测,当前理论研究主要是基于Rohsenow关联式,采用固定数值的方式对关联式中的经验参数进行优化。本文基于Rohsenow关联式,通过拟合法建立关联式中两个经验参数与过热度的联系,进而搭建了池沸腾HTC预测修正模型。与3组去离子水铜表面池沸腾实验结果对比,修正模型对HTC的预测平均误差为17.79%、5.35%、18.14%,优于Rohsenow关联式模型和Li关联式模型。研究工作可以为HTC的预测提供一定的理论帮助。

In view of predicting the boiling heat transfer coefficient (HTC) at a deionized water pool,current theoretical research is mainly based on Rohsenow correlation formula,and the empirical parameters in the correlation formula are optimized through using a fixed numerical method.Based on Rohsenow correlation formula,the relationships between the two empirical parameters and the superheat in the correlation formula are established through the fitting method,and then a modified model is constructed for predicting HTC of pool boiling.Compared with the boiling experimental results from three groups of deionized water copper surface pools,the average prediction errors of the modified model for HTC are 17.79%,5.35% and 18.14%,which are better than those of Rohsenow correlation model and Li correlation model.This research work can provide some theoretical help for HTC prediction.

陆存豪(1988-),男,博士,讲师,研究方向为池沸腾冷却技术,通讯联系人,lch＿ok@yzu.edu.cn。