Heat Transfer in Nucleate Boiling of Binary Mixtures : Development of a Heat Transfer Correlation

• Published in: Nihon Kikai Gakkai rombunshuu. B hen Vol. 62; no. 597; pp. 1906 - 1912
• Main Authors: FUJITA, Yasunobu, TSUTSUI, Masayuki
• Format: Journal Article
• Language: Japanese; English
• Published: The Japan Society of Mechanical Engineers 1996
• Subjects: Correlation
• ISSN: 0387-5016; 1884-8346
• DOI: 10.1299/kikaib.62.1906

Heat transfer coefficients in nucleate pool boiling of five binary mixtures at atmospheric pressure were measured on an upward-facing circular plate for a wide range of heat fluxes from about 15percent of the critical heat flux (CHF) to close to CHF. As has been observed in many previous measurements, heat transfer coefficients were reduced in comparison with the interpolated values between their constituent pure components. This reduction was dependent on the mixture composition and became more pronounced with increasing heat flux. To provide the simplest and most reliable prediction of the reduction of heat transfer coefficients regarding the mixture composition and heat flux, the Thome correlation was modified so as to include the effect of heat flux in a dimensionless form. The developed correlation succeeds in correlating the present experimental data within ±20 percent accuracy.