Bubble size in pool boiling of Acetone/Isopropyl alcohol on Bronze surface

فاقد چكيده فارسي

Free convection heat transfer on the surface of a smooth horizontal cylinder was investigated at different heat flux for a binary mixture of Acetone/Isopropyl alcohol (Act/IPA) at atmospheric pressure and saturation temperature. The surface was made of Bronze and bubble diameters at departure were measured during saturated pool boiling utilizing the monochrome movies. The experiments were conducted in a glass container for three levels of IPA volume fractions. Wall temperature was measured using three thermocouples and the average value was reported. Experimental results showed that bubble detachment diameter increases with heat flux and IPA volume fraction. Obtained results including bubble diameter were compared with available models of bubble nucleation in literature. Heat flux and heat transfer coefficient were also reported.