Intensification of the liquid film evaporation in a vertical channel
Identifieur interne : 000E44 ( Main/Exploration ); précédent : 000E43; suivant : 000E45Intensification of the liquid film evaporation in a vertical channel
Auteurs : A. S. Cherif [Tunisie] ; S. Ben Jabrallah [Tunisie] ; J. P. Corriou [France] ; A. Belghith [Tunisie]Source :
- Desalination : (Amsterdam) [ 0011-9164 ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- mix :
Abstract
An experimental study of heat and mass transfer in natural and forced convection in a vertical channel with parallel plates is presented. The channel is designed to play the role of an evaporator. The vertical walls are formed by two metal plates having a good thermal conductivity. These two plates are symmetrically heated and subjected to a constant heat flux. On the inner face of each wall, a thin film of a negligible thickness falls. Submitted to a heat flux, this liquid partly evaporates. The experimentation consists in determining the flux of evaporation of the falling liquid film in natural and forced convection. The exploration of the thermal field (in the film and in the gas phase) allows us to give a description of evaporation in the channel. The results obtained are exploited to study the influence of the operating parameters such as the heat flux density on the temperature of liquid film and the evaporated flux for the two modes.
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Design</term>
<term>Evaporation</term>
<term>Evaporator</term>
<term>Falling film</term>
<term>Flux density</term>
<term>Forced convection</term>
<term>Heat flow</term>
<term>Heat transfer</term>
<term>Liquid film</term>
<term>Mass transfer</term>
<term>Natural convection</term>
<term>Operating conditions</term>
<term>Parallel plate</term>
<term>Thermal conductivity</term>
<term>Thin film</term>
<term>Vertical wall</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Film liquide</term>
<term>Evaporation</term>
<term>Transfert chaleur</term>
<term>Transfert masse</term>
<term>Convection forcée</term>
<term>Plaque parallèle</term>
<term>Conception</term>
<term>Evaporateur</term>
<term>Paroi verticale</term>
<term>Conductivité thermique</term>
<term>Flux thermique</term>
<term>Couche mince</term>
<term>Condition opératoire</term>
<term>Densité flux</term>
<term>Convection naturelle</term>
<term>Film tombant</term>
</keywords>
<keywords scheme="mix" xml:lang="en"><term>CAVITY</term>
<term>DISTILLATION CELL</term>
<term>Evaporation</term>
<term>Experimental study</term>
<term>Forced convection</term>
<term>HEAT</term>
<term>LAMINAR MIXED CONVECTION</term>
<term>MASS-TRANSFER</term>
<term>Natural convection</term>
<term>PARALLEL PLATES</term>
<term>TURBULENT NATURAL-CONVECTION</term>
<term>Thin falling film</term>
<term>Vertical channel</term>
<term>WALL</term>
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<front><div type="abstract" xml:lang="en">An experimental study of heat and mass transfer in natural and forced convection in a vertical channel with parallel plates is presented. The channel is designed to play the role of an evaporator. The vertical walls are formed by two metal plates having a good thermal conductivity. These two plates are symmetrically heated and subjected to a constant heat flux. On the inner face of each wall, a thin film of a negligible thickness falls. Submitted to a heat flux, this liquid partly evaporates. The experimentation consists in determining the flux of evaporation of the falling liquid film in natural and forced convection. The exploration of the thermal field (in the film and in the gas phase) allows us to give a description of evaporation in the channel. The results obtained are exploited to study the influence of the operating parameters such as the heat flux density on the temperature of liquid film and the evaporated flux for the two modes.</div>
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