Evaporation of volatile liquids from an open-topped, partially filled container to an air stream

Authors

  • A. T. Prata,

    1. Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455
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  • E. M. Sparrow

    Corresponding author
    1. Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455
    • Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455
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Abstract

Experiments were performed to measure the evaporative mass transfer from a partially filled, slot-like container recessed in the floor of a flat rectangular duct through which turbulent air flow was passed. Toluene and cumene were used as the evaporating liquids, and systematic variations were made of the Reynolds number and of the distance between the top of the container and the surface of the evaporating liquid. The measured Sherwood numbers displayed unconventional dependences on both the Reynolds and Schmidt numbers as well as a complex dependence on the top-to-surface distance.

Abstract

Des expériences ont été effectuées dans le but de mesurer le transfert de matière par évaporation à partir d'un contenant en forme de fente partiellement rempli et installé sur le fond d'un conduit rectangulaire dans lequel on fait circuler un écoulement turbulent d'air. On a utilisé le toluène et le cumène comme liquide évaporés et on a fait varier systématiquement le nombre de Reynolds ainsi que la distance entre le haut du contenant et la surface du liquide. Les nombres de Sherwood mesurés dépendent de façon imprévue des nombres de Reynolds et de Schmidt et, de façon complexe, de la distance entre le haut du contenant et la surface du liquide.

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