Heat Transfer in Nucleate Boiling of Binary Mixtures : Heat Transfer Measurement and Assessment of Available Correlations

• Published in: Nihon Kikai Gakkai rombunshuu. B hen Vol. 60; no. 577; pp. 3101 - 3108
• Main Authors: Fujita, Yasunobu, Tsutsui, Masayuki
• Format: Journal Article
• Language: Japanese; English
• Published: The Japan Society of Mechanical Engineers 1994
• Subjects: Binary Mixture
• ISSN: 0387-5016; 1884-8346
• DOI: 10.1299/kikaib.60.3101

Heat-transfer coefficients in nucleate pool boiling of binary mixtures were measured on a circular copper plate, 40 mm in diameter, for a wide range of heat flux and over the full range of concentrations. Measurements were performed for five mixtures of methanol/water, thanol/water, methanol/ethanol, ethanol/n butanol, and methanol/benzene, each in the saturated state at atmospheric pressure. Measured data were expressed in the form α=Cqn, where a is the heat-transfer coefficient, q is heat flux, and C and n are constants. The validity of available correlations for boiling heat transfer of a binary mixture were assessed on the basis of the measured data. Among five correlations evaluated, the Stephan-Korner correlation is found to be the best although it contains an empirical constant which varied with the mixture.