This paper describes results from an experimental study of the effect of an electric field on nucleate boiling and the critical heat flux (CHF) in pool boiling. A dielectric liquid of AE-3000 (AGC Co. Ltd) was used as working fluid. A heating surface was polished with the surface roughness (Ra) of 0.05 μm. A micro sized electrode, in which the slits were provided, was designed in order to generate non uniform electric field and to produce electrohydrodynamic (EHD) effects with the application of high dc voltages. The obtained results confirmed the enhancement of CHF since the EHD effects increased the CHF to 82 W/cm~2 at the voltage of -3000 V, which was four times greater than CHF for the pool boiling. The usual traveling wave on the bubble interface induced by the Kelvin-Helmholtz instability was modified by adding the EHD effects.
展开▼
机译：本文介绍了电场对核沸腾和池沸腾中的临界热通量（CHF）影响的实验研究结果。使用AE-3000的电介质液体（AGC Co.Ltd）作为工作流体。用0.05μm的表面粗糙度（Ra）抛光加热表面。设计了一个带有狭缝的微型电极，以产生不均匀的电场并在施加高直流电压时产生电流体动力学（EHD）效应。获得的结果证实了CHF的增强，因为EHD效应在-3000 V的电压下将CHF增加到82 W / cm〜2，这是池沸腾的CHF的四倍。通过添加EHD效应，修改了由Kelvin-Helmholtz不稳定性引起的气泡界面上的常规行波。
展开▼
