Heat transfer in nucleate pool boiling of binary mixtures

• Published in: International journal of heat and mass transfer Vol. 37; pp. 291 - 302
• Main Authors: Fujita, Yasunobu, Tsutsui, Masayuki
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.03.1994; Elsevier
• Subjects: Applied sciences; Devices using thermal energy; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Heat exchangers (included heat transformers, condensers, cooling towers); Water; Correlation; Ethanol; Experimental study; Binary mixture; Benzene; Heat exchanger; Butanol; Nucleate boiling; Evaporator; Comparative study; Heat transfer; Methanol
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/0017-9310(94)90030-2

Heat transfer coefficients for nucleate pool boiling of binary mixtures were measured on a circular copper plate facing upwards. Tested mixtures were methanol/water, ethanol/water, methanol/ethanol, ethanol/ n- butanol , and methanol/benzene, each in the saturated state at atmospheric pressure. Special stress was laid on elucidating the dependence of heat transfer reduction on mixture composition, physical properties, phase equilibrium diagram, and heat flux. Experimental data were compared with available correlating methods developed for binary mixtures by Stephan and Körner, and by others. The comparison showed that among the compared correlations, Stephan and Körner's correlation and Thome's correlation give fairly good results while their accuracy varies considerably with mixtures and heat flux levels. A modification of Thome's correlation so as to include the effect of heat flux succeeded in correlating the present data within ± 20% accuracy.