The heat transfer effect of insulating liquids in EHD model pipe

An electrohydrodynamic (EHD) heat transfer enhancement model was designed and made. This model consists of three parts: vaporization section, adiabatic section and condensation section. The insulating liquid was used to be the working fluid and the copper-wire which diameter is I mm was used to be the high voltage electrode. The proper insulation coordination was designed as well. The temperature difference in the inlet and outlet of the coolant in the vaporization section and the condensation section, and the saturation vapor pressure in the model were measured under different dc high voltage and different tilt angle, that is, the vaporization section was placed higher than the condensation section. The experiment results indicate: Such EHD enhancement heat transfer technology can be practically employed in refrigerating and heat transfer engineering, and has special value for the investigation of antigravity heat pipes.