Abstract The EHD pumping is an attractive solution to insufficient liquid supply and dryout occurrence in open microgrooves heat sink and micro heat pipes. It offers the advantages of active control of capillary pumping capacity. In this study, effects of applied non-uniform electric field on evaporation heat transfer enhancement in a vertical rectangular microgrooves heat sink are investigated experimentally. The pin-plate electrodes pair is used to produce the non-uniform electric field. A series of experiments of parameters have been considered, including heat flux, interelectrode spacing and microgrooves dimension are conducted under various applied DC applied voltages. Results show that the application of pin electrode can promote the capillary wetting length, decrease the wall temperature of microgrooves and enhance the heat transfer performances effectively.

中文翻译：

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电场对垂直矩形微槽散热器传热增强的影响

摘要 EHD 泵送是解决开放式微槽散热器和微热管中液体供应不足和干涸的一种有吸引力的解决方案。它具有主动控制毛细管泵送能力的优点。在这项研究中，通过实验研究了外加非均匀电场对垂直矩形微槽散热器中蒸发传热增强的影响。针板电极对用于产生非均匀电场。考虑了一系列参数的实验，包括在各种外加直流电压下进行的热通量、电极间距和微槽尺寸。结果表明，针电极的应用可以促进毛细管润湿长度，