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Title: Study of heat and mass transfer in a falling film evaporation process
Keywords: Falling film, Horizontal Tubular Evaporator, Bulk of the film, Interface, Heat and Mass transfer coefficients, Interface to air
Issue Date: 6-Jan-2005
Citation: MUHAMMAD ELIAS (2005-01-06). Study of heat and mass transfer in a falling film evaporation process. ScholarBank@NUS Repository.
Abstract: In this study, a horizontal tubular falling film evaporator has been designed and its performance has been evaluated by using water as falling film. One Detailed model and one Simplified model, along with their simulation programs have been developed. It was found that the overall heat transfer coefficient from heating fluid to the bulk of the film was found to vary from 0.7kW/m2K to 1.1kW/m2K. The heat transfer coefficient from the bulk of the falling film to its interface varies from 2 to 5 kW/m2K. The range of heat and the mass transfer coefficients from film interface to the air stream were found to vary from 15 to 30 W/m2K and 0.015 to 0.3 kg/m2s, respectively. With the increases of the bulk film temperature, the overall heat transfer coefficient decreases; whereas, it increases with the increase of the hot water temperature. The mass transfer coefficients did not vary significantly.
Appears in Collections:Master's Theses (Open)

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