Experimental study of electrohydrodynamically augmented condensation heat transfer on a smooth and an enhanced tube

This paper presents the results of an electrohydrodynamic (EHD)-extraction phenomenon study to enhance condensation heat transfer using a smooth and an enhanced tube. In this study, the film Reynolds number ranges from 200 to 1250, thus indicating that the condensation occurs in the wavy laminar regime. Tests were conducted with and without the electrode setup in place to investigate whether the electrode spacers might act as skirts stripping the liquid from the tube, thus causing an increase in the heat transfer coefficient. The results without EHD enhancement, with and without the electrode setup installed, were identical, indicating that the spacers have no impact on the results.