Effects of mixed electric field on characterization of electrohydrodynamics drying system

In this paper, we present a new structure of applying two electrical power supplies to generate ionic wind.In this configuration, two power supplies were applied simultaneously with a modulated voltage to anelectrohydrodynamic (EHD) system then corona discharge parameters and EHD thrust characterizationwas investigated by a corona dryer mechanism. The EHD thrust experiments were performed with a pinto plate and SDBD arrangements. The results show that with the simultaneous application of two powersupplies the drying rate in a drop of water as a standard sample was greatly enhanced and the drying time was reduced. Thus, the total evaporation was occurred in ۱ minute in the SDBD structure with a power of ۷ watts and in ۱.۵ minutes in pin to plate structure with a power of ۲.۵ watts. Eventually, it was observed that the use of mixed electric fields enhances the ionic wind, hence increases the non-thermal evaporation process significantly. Furthermore, the drying rate has grown notably In SDBD configuration.

Keywords:

Ionic wind , Modulated voltage , Electrohydrodynamic (EHD) , Corona discharge , Surface dielectric barrier discharge (SDBD)