静电场强化介电流体冷凝换热实验研究

本文以电绝缘性低沸点介电流体R11为实验工质,利用自行设计和制作的电流体力学实验模型,对介电流体进 行静电场强化冷凝换热实验研究。实验结果表明:静电场对模型内介电流体的凝结换热有很好的强化作用,其换热系数主 要与外加电场强度、热通量及电极相对位置等因素有关,这种电场强化凝结换热技术对制冷和热传递工程具有参考价值。

THE EXPERIMENTAL INVESTIGATION OF HEAT TRANSFER ENHANCEMENT OF DIELECTRIC FLUID UNDER ELECTROSTATIC FIELD

The insulating fluid with low boiling point R11 was selected as working fluid and an experimental model of electrohydrodanymical (EHD) was designed and made. The experiment of condensation heat transfer inside this model was conducted under electrostatic field. The experiment results showed that the electrostatic field can enhance the condensation heat transfer of the dielectric fluid inside the model greatly, and the heat transfer coefficient was mainly affected by applied electric field, heat flux and the relative position of the electrode. This electric field enhanced condensation technology show much reference value for refrigeration and heat transfer engineering.