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| Description
| - Práce presentuje experimentální data průměrného koeficientu přestupu hmoty (kL) v nádobě míchané dvěmi Rushtonovými turbínami na společném hřídeli. Použité kapalné fáze byly destilovaná voda a 0,5M roztok síranu sodného. Objemový koeficient přestupu hmoty (kLa) byl měřen dynamickou tlakovou metodou. Specifická mezifázová plocha byla převzata od Alvese a kol. [Chem. Eng. Proc., in press], který měřil lokální zádrž plynu a lokální průměrno velikost bublin ve stejném zařízení a pro stejné vsádky. Hodnoty kL jsou interpretovány pomocí korelací založených na turbulenci s idealizovanou strukturou vírů v blízkosti bubliny, jmenovitě pomocí modelu Lamonta a Scotta [AIChE J. 16 (1970) 513], který vystihuje data se střední odchylkou 4,7%. V práci je ukázáno, že průkaznou veličinou vhodnou ke korelaci kL v míchaných nádobách je disipovaný příkon v kapalině spíše než velikost bublin a slip rychlost, jak předpokládali Alves a kol. (cs)
- Experimental data on the average mass transfer liquid film coefficient (kL) in a tank stirred by two Rushton turbines on common shaft are presented. Liquid media used were distilled water and 0.5M sodium sulphate solution. Volumetric mass transfer coefficient (kLa) was measured by the dynamic pressure method. Specific interfacial area a was taken from Alves et al. [Chem. Eng. Proc., in press] who measured data on local gas hold-up and local average bubble diameter in the same apparatus and batches. Values of kL are interpreted in terms of correlations based on idealized eddy structures of turbulence in the bubble vicinity, namely by eddy model by Lamont and Scott [AIChE J. 16 (1970) 513], which fits the data with the mean deviation of 4.7%. It is shown that the decisive quantity to correlate kL in the stirred tank is power dissipated in the liquid phase rather than the bubble diameter and the slip velocity as assumed by Alves et al.
- Experimental data on the average mass transfer liquid film coefficient (kL) in a tank stirred by two Rushton turbines on common shaft are presented. Liquid media used were distilled water and 0.5M sodium sulphate solution. Volumetric mass transfer coefficient (kLa) was measured by the dynamic pressure method. Specific interfacial area a was taken from Alves et al. [Chem. Eng. Proc., in press] who measured data on local gas hold-up and local average bubble diameter in the same apparatus and batches. Values of kL are interpreted in terms of correlations based on idealized eddy structures of turbulence in the bubble vicinity, namely by eddy model by Lamont and Scott [AIChE J. 16 (1970) 513], which fits the data with the mean deviation of 4.7%. It is shown that the decisive quantity to correlate kL in the stirred tank is power dissipated in the liquid phase rather than the bubble diameter and the slip velocity as assumed by Alves et al. (en)
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| Title
| - Gas–Liquid Mass Transfer Coefficient in Stirred Tanks Interpreted through Models of Idealized Eddy Structure of Turbulence in the Bubble Vicinity
- Koeficient přestupu hmoty mezi plynem a kapalinou v míchaných nádobách interpretovaný pomocí modelu turbulence s idealizovanou strukturou vírů v blízkosti bubliny (cs)
- Gas–Liquid Mass Transfer Coefficient in Stirred Tanks Interpreted through Models of Idealized Eddy Structure of Turbulence in the Bubble Vicinity (en)
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| skos:prefLabel
| - Gas–Liquid Mass Transfer Coefficient in Stirred Tanks Interpreted through Models of Idealized Eddy Structure of Turbulence in the Bubble Vicinity
- Koeficient přestupu hmoty mezi plynem a kapalinou v míchaných nádobách interpretovaný pomocí modelu turbulence s idealizovanou strukturou vírů v blízkosti bubliny (cs)
- Gas–Liquid Mass Transfer Coefficient in Stirred Tanks Interpreted through Models of Idealized Eddy Structure of Turbulence in the Bubble Vicinity (en)
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| skos:notation
| - RIV/67985858:_____/04:00099447!RIV08-AV0-67985858
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA104/98/1126), Z(AV0Z4072921), Z(MSM 223400007)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/67985858:_____/04:00099447
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - mass transfer coefficient; bubble; dynamic pressure method (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - CH - Švýcarská konfederace
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Chemical Engineering and Processing
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Zedníková, Mária
- Moucha, T.
- Linek, V.
- Kordač, M.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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