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The effect of surfactants on boiling heat transfer

Gad Hetsroni
Department of Mechanical Engineering, Technion- Israel Institute of Technology, Technion City, 32000 Haifa, Israel

M. Gurevich
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Albert Mosyak
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Elena Pogrebnyak
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Roman Rozenblit
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Zelik Segal
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Résumé

The presence of surfactant additives in water was found to enhance boiling heat transfer significantly. The boiling behavior of the solution depends on the concentration of the additive, its type and chemistry, wall heat flux, and the heater geometry.
Saturated and subcooled pool boiling of environmentally acceptable surfactant solutions were investigated experimentally. The kinetics of boiling (bubble nucleation, growth and departure) was investigated by high-speed video recording. Boiling curves for various concentrations were obtained and compared. The results show that the bubble behavior and the heat transfer mechanism for surfactant solution are quite different from those of pure water. Specific features of boiling of surfactant solutions were revealed.

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