Evolution Of Contact Line Research Articles

Characteristics of Boiling Heat Transfer on Hydrophobic Surface

The paper presents the results of an experimental study of the effect of hydrophobic fluoropolymer coating on the multiscale characteristics of heat transfer at water boiling. New experimental data on dynamics of vapor bubble growth and detachment, evolution of contact line, nucleation site density, heat transfer coefficient were obtained using high-speed imaging techniques, including infrared thermography and video recording from the bottom side of transparent ITO heater. It was shown, that the using of hydrophobic fluoropolymer coating leads to heat transfer enhancement, to decrease of the superheat temperature at the onset of boiling, to increase of the active nucleation site density and to significant change in the dynamics of growth and departure of vapor bubbles and the evolution of the triple contact line.

ENHANCEMENT OF BOILING HEAT TRANSFER ON HYDROPHOBIC FLUOROPOLYMER COATINGS

This paper presents results of an experimental study of the effect of hydrophobic fluoropolymer coating on the multiscale characteristics of heat transfer at water boiling. New experimental data on the dynamics of vapor bubble growth and detachment, the evolution of contact line, the nucleation site density, and heat transfer coefficient were obtained using high-speed imaging techniques, including infrared thermography and video recording from the bottom side of the transparent heater. It was shown that using a hydrophobic fluoropolymer coating leads to heat transfer enhancement, to a decrease of the surface temperature at the onset of boiling, to an increase of nucleation site density, and to significant change in the dynamics of growth and departure of vapor bubbles and the evolution of the triple contact line.