Abstract
Boiling heat transfer from horizontal stainless steel tubes, submerged in subcooled surfactant solutions of various concentrations was studied experimentally. The kinetics of boiling (bubble nucleation, growth and departure) in pure water, fresh and degraded solutions was investigated by the high speed video recording in combination with Infrared Thermography. The specific features of boiling of surfactant solutions were revealed. It was found that the subcooled nucleate boiling of surfactant could not be described by a single curve in contrast to water. At given values of heat flux and bulk temperature the heat transfer coefficient does not depend significantly on the concentrations of the solution. A boiling hysteresis was found only for degraded solutions. This phenomenon may be related to formation of a surfactant monolayer, which results in damping of an interfacial motion.
