About: Large Mass Flux Differences for Opposite Flow Directions of a Condensable Gas through an Asymmetric Porous Membrane

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The one-dimensional, adiabatic flow of vapors through porous ceramic membranes consisting of three different layers is theoretically investigated. The individual layers have different thicknesses with pore sizes of 10 nm for the separation layer, 100 nm for the middle layer and 6 μm for the support layer. The mass flow is calculated for values of the upstream relative pressure varying between 0.7 and 1. The relative pressure is the ratio of the actual pressure to the saturation pressure. For upstream relative pressures smaller than about 0.77, the fluid does not condense within the porous membrane, and the mass flux is a few percent larger for the flow direction from the support to the separation layer than for the other flow direction. For larger upstream relative pressures, the fluid may condense and liquid or a two-phase mixture may be transported through parts of the membrane. The mass flow can become about 10 times larger for one flow direction than for the opposite flow direction. The flow is modeled using the energy balance and accounting for capillary condensation, for the transport of the enthalpy of vaporization, and for the temperature variation due to the Joule–Thomson effect. The one-dimensional, adiabatic flow of vapors through porous ceramic membranes consisting of three different layers is theoretically investigated. The individual layers have different thicknesses with pore sizes of 10 nm for the separation layer, 100 nm for the middle layer and 6 μm for the support layer. The mass flow is calculated for values of the upstream relative pressure varying between 0.7 and 1. The relative pressure is the ratio of the actual pressure to the saturation pressure. For upstream relative pressures smaller than about 0.77, the fluid does not condense within the porous membrane, and the mass flux is a few percent larger for the flow direction from the support to the separation layer than for the other flow direction. For larger upstream relative pressures, the fluid may condense and liquid or a two-phase mixture may be transported through parts of the membrane. The mass flow can become about 10 times larger for one flow direction than for the opposite flow direction. The flow is modeled using the energy balance and accounting for capillary condensation, for the transport of the enthalpy of vaporization, and for the temperature variation due to the Joule–Thomson effect. (en)
Title	Large Mass Flux Differences for Opposite Flow Directions of a Condensable Gas through an Asymmetric Porous Membrane Large Mass Flux Differences for Opposite Flow Directions of a Condensable Gas through an Asymmetric Porous Membrane (en)
skos:prefLabel	Large Mass Flux Differences for Opposite Flow Directions of a Condensable Gas through an Asymmetric Porous Membrane Large Mass Flux Differences for Opposite Flow Directions of a Condensable Gas through an Asymmetric Porous Membrane (en)
skos:notation	RIV/67985858:_____/14:00433141!RIV15-AV0-67985858
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(7AMB12AT010), P(7AMB14AT011)
http://linked.open...iv/cisloPeriodika	NOV 15
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Uchytil, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	25665
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/14:00433141
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	condensation; vapor permeation; asymmetric membranes (en)
http://linked.open.../riv/klicoveSlovo	asymmetric membranes vapor permeation condensation
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[54E62ED13705]
http://linked.open...i/riv/nazevZdroje	Journal of Membrane Science
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Flow of saturated vapors through porous membranes Permeace kondenzujících plynů asymetrickými membránami
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	470
http://linked.open...iv/tvurceVysledku	Loimer, T. Uchytil, Petr
http://linked.open...ain/vavai/riv/wos	000341141800045
issn	0376-7388
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.memsci.2014.07.055

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