电水动力学强化垂直平板凝结换热的实验关联

Experimental correlation for EHD enhancement condensation heat transfer of vertical flat plate

在分析EHD(电水动力学)强化凝结换热理论的基础上,提出了虚拟重力加速度的概念.对工质R113在垂直平板上受直流高电压作用下的凝结换热实验数据进行分析.实验表明,液膜波动和减薄组合参数与电压之间存在良好的相关关系,得出了实验关联式.关联式计算值与实验值的相对误差在±10%以内.

The concept of suppositional acceleration of gravity is introduced based on the analyses of the theory of EHD enhancement condensation heat transfer, and the combination parameter reflecting the wave variable of the vapor-liquid interphase and the reduction rate of the thickness is also proposed. There is good coherency between the combination parameter and the voltage according to analysing the experimental data of R113＇s condensation enhancement heat transfer under high voltage on vertical plate. An experimental correlation formula is obtained, and the maximum relative error between the calculated and the experimental results is within ±10%.