Article ID Journal Published Year Pages File Type
10385909 Chemical Engineering Research and Design 2005 6 Pages PDF
Abstract
This work features the experimental determination of overall heat transfer coefficients and heat transfer coefficients from the surface of a heat transferring sieve tray to the turbulent froth on the tray. The present investigation is part of a long-term project on heat integrated distillation columns (HIDiC), focusing on the impact of on-tray heat transfer on Murphree tray efficiency. A 150 mm diameter distillation column with a diabatic section has been used in experiments to determine heat transfer coefficients for pure water and methanol/water systems. The tray was operated in both heating and cooling modes, in which heat fluxes up to 50 kW m−2 and 110 kW m−2, respectively were transferred. The experimental heat transfer coefficients were correlated with the plate-to-froth temperature difference in the heating mode, in which nucleate boiling is promoted; and with the vapour velocity in the cooling mode, where convective cooling and condensation takes place along the vapour path.
Related Topics
Physical Sciences and Engineering Chemical Engineering Filtration and Separation
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