Abstract
A numerical analysis was carried out to study the detailed heat transfer characteristics for a falling liquid ethanol film by solving the respective governing equations for the liquid film and the induced gas flow together. Meanwhile an experimental system was set up to measure the overall cooling of the film. The measured data are in good agreement with the numerical predictions. It was observed that the cooling of the liquid film is mainly caused by the latent heat transfer connected with the vaporization of the liquid film. Significant liquid cooling results for the system with a high inlet liquid temperature or a low liquid flowrate.
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