INCORPORATION OF EHD ENHANCEMENT IN HEAT-EXCHANGERS

This paper presents some new thinking about the possible effects of th e electrode geometry on the electrohydrodynamic (EHD) enhancement of t wo phase heat transfer, especially boiling heat transfer. A hypothesis on the dependence of the enhancement effect on the geometry of the EH D electrode system in two phase heat transfer is made. For boiling, a conceptual model regarding the effect of EHD force on the bubble movem ent and hence enhancement effect is built. Furthermore, a semi-symmetr ical electrode geometry is suggested to assess the hypothesis. The out come of this study can hopefully form the basis of design of practical EHD heat exchangers.