Abstract
This work consists in modeling a liquid film temperature streaming on spiral fins where the falling fluid is heated or evaporated according to the operating parameters. This study was performed to determine the film temperature profile used in deducing the heating and the evaporation stage limits. The fin heat equation was solved using the control volume method. The proposed film temperature correlation was a function of entry temperature, base temperature, thermal convection coefficient, physico-chemical properties and wetted angle. This model was experimentally validated. It allows to properly size the appropriate type of exchanger for such applications.
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