Measurements on the Flow of Vapors near Saturation Through Porous Vycor Glass Membranes

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4711159" target="_blank" >10.1063/1.4711159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurements on the Flow of Vapors near Saturation Through Porous Vycor Glass Membranes

Popis výsledku v původním jazyce

We present experimental data of the flow of butane and isobutane vapors through porous Vycor glass membranes. The pressure driven flow of vapors near and far from saturation through membranes with pore diameters of 20 and 33 nm is investigated. The upstream pressures lie between the saturation pressure at the upstream temperature to approximately half that value. The pressure differences are between a few kPa to about 100 kPa.Describing the flow in terms of dimensionless groups recovered from an adiabatic description of the flow process, we find that a vapor condenses and the mass flux is increased if (i) a dimensionless permeability of the membrane is larger than one and (ii) if the vapor at the upstream side is close enough to saturation such that adimensionless group involving the upstream pressure and the pressure difference is also larger than one. Experimental data corroborates condition (i) above and indicates that condition (ii) might be valid.

Název v anglickém jazyce

Measurements on the Flow of Vapors near Saturation Through Porous Vycor Glass Membranes

Popis výsledku anglicky

We present experimental data of the flow of butane and isobutane vapors through porous Vycor glass membranes. The pressure driven flow of vapors near and far from saturation through membranes with pore diameters of 20 and 33 nm is investigated. The upstream pressures lie between the saturation pressure at the upstream temperature to approximately half that value. The pressure differences are between a few kPa to about 100 kPa.Describing the flow in terms of dimensionless groups recovered from an adiabatic description of the flow process, we find that a vapor condenses and the mass flux is increased if (i) a dimensionless permeability of the membrane is larger than one and (ii) if the vapor at the upstream side is close enough to saturation such that adimensionless group involving the upstream pressure and the pressure difference is also larger than one. Experimental data corroborates condition (i) above and indicates that condition (ii) might be valid.

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings

ISBN

978-0-7354-1053-4

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

97-102

Název nakladatele

American Institute of Physics

Místo vydání

Melville

Místo konání akce

Potsdam

Datum konání akce

17. 6. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000306995800014