Abstract
Ethanol-water binary mixtures with 7 different mole fractions of ethanol ranging from 0 to 1 were adopted as testing liquids in the experiment. The vertical heating tube was inserted in porous matrix composed of five well sorted glass beads whose diameters range from 0.5 to 4.3 mm. Due to the effect of composition, the trend of combination of vapor bubbles was reduced, resulting in the increase of peak heat flux of binary mixture. With the increase of ethanol mole fraction, 0.5 mm diameter bead had lower value of peak heat flux, while for pure liquid the critical state is difficult to appear. With given diameter of glass bead, there existed an optimum value of mole fraction of ethanol, which was decreased with the increase of bead diameter. A dimensionless heat transfer coefficient was predicted through the introduction of a dimensionless parameter of porous matrix, which agreed with the experimental results satisfactorily.
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References
J.F. Liu and J.R. Lloyd, “Nucleate Pool Boiling Heat Transfer of Binary Mixtures: A New Correlation,” Proc. 8th Int. Heat Pipe Conf., pp.97–102, (1992).
T.O. Hui and J.R. Thome, “A Study of Binary Mixture Boiling: Boiling Site Density and Subcooled Heat Transfer,”IJHMT,28, 5, pp.919–928, (1985).
H.L. Mo, T.Z. Ma and Z.F. Zhang, “Experimental Study of Pool Boiling Heat Transfer from a Vertical Tube Embedded in a Porous Medium,”J. of Engineering Thermophysics,17, 1, pp.81–85, (1996).
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Mo, H., Ma, T. & Zhang, Z. Investigation of boiling heat transfer of binary mixture from vertical tube embedded in porous media. J. of Thermal Science 5, 190–195 (1996). https://doi.org/10.1007/BF02653184
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DOI: https://doi.org/10.1007/BF02653184