%0 Journal Article
%T Wicking and evaporation of liquids in porous wicks: A simple analytical approach to optimization of wick design
%+ Laboratoire Matériaux et Durabilité des constructions (LMDC)
%+ Institut de mécanique des fluides de Toulouse (IMFT)
%A Beyhaghi, Saman
%A Geoffroy, Sandrine
%A Prat, Marc
%A Pillai, Krishna M.
%Z WOS:000333885900032
%< avec comité de lecture
%@ 0001-1541
%J AIChE Journal
%I Wiley
%V 60
%N 5
%P 1930--1940
%8 2014-05
%D 2014
%R 10.1002/aic.14353
%K optimization
%K porosity
%K media
%K porous media
%K absorption
%K bead radius
%K Darcy's law
%K drops
%K evaporation
%K heat pipes
%K imbibition
%K mixtures
%K sessile
%K sintered wick
%K wick design
%K wicking
%Z Engineering Sciences [physics]/Civil EngineeringJournal articles
%X Wicking and evaporation of volatile liquids in porous, cylindrical wicks is investigated where the goal is to model, using simple analytical expressions, the effects of variation in geometrical parameters of a wick, such as porosity, height and bead-size, on the wicking and evaporation processes, and find optimum design conditions. An analytical sharp-front flow model involving the single-phase Darcy's law is combined with analytical expressions for the capillary suction pressure and wick permeability to yield a novel analytical approach for optimizing wick parameters. First, the optimum bead-radius and porosity maximizing the wicking flow-rate are estimated. Later, after combining the wicking model with evaporation from the wick-top, the allowable ranges of bead-radius, height and porosity for ensuring full saturation of the wick are calculated. The analytical results are demonstrated using some highly volatile alkanes in a polycarbonate sintered wick. (c) 2014 American Institute of Chemical Engineers AIChE J, 60: 1930-1940, 2014
%G English
%L hal-01850783
%U https://hal.insa-toulouse.fr/hal-01850783
%~ INSA-TOULOUSE
%~ LMDC
%~ CNRS
%~ GENIECIVIL
%~ INSA-GROUPE
%~ UNIV-TLSE3