Electric field effect in boiling heat transfer. Part B: Electrode geometry

The effect of different electrode geometries on boiling heat transfer is presented in this paper. The resultant of the buoyancy, surface tension and electric forces on bubbles adjacent to the heating tubes in a tube bundle was numerically simulated. A novel electrode geometry was suggested as it produces a force tangential to the tube surface on most of the bubbles on the boiling tube. The numerical findings were verified using a shell-and-tube electrohydrodynamic (EHD) heat exchanger (with five smooth tubes) boiling HCFC-123.