Vliv tvaru lopatky na výkon šestilopatkových diskových turbínových míchadel.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F00%3A00081949" target="_blank" >RIV/67985858:_____/00:00081949 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Effect of Blade Shape on the Performance of Six-Bladed Disk Turbine Impellers.

Popis výsledku v původním jazyce

Different modifications of the Rushton turbine were studied in a dual-impeller agitated tank (T ) 0.4 m), to find the effect of blade form on power draw, turbulent dispersion, gas handling capacity, mixing, gas holdup, and mass-transfer rate performanceunder turbulent agitation in an air-water system. Blade streamlining was found to lead to a lower ungassed power number, a higher gas flow number before flooding, and increased insensitivity of impeller power dissipation to the gassing rate. This is consistent with the formation of smaller trailing vortices and ventilated cavities behind the blade. At the same power input and superficial gas velocity, however, the different impellers provided the same mixing time t0.05, gas holdup G, and specific mass-transfer coefficient KLa. Each of these variables correlates with the specific power input PG/VL, clearly suggesting that a better performance may be expected after retrofitting of Rushton turbines with streamlined impellers.

Název v anglickém jazyce

The Effect of Blade Shape on the Performance of Six-Bladed Disk Turbine Impellers.

Popis výsledku anglicky

Different modifications of the Rushton turbine were studied in a dual-impeller agitated tank (T ) 0.4 m), to find the effect of blade form on power draw, turbulent dispersion, gas handling capacity, mixing, gas holdup, and mass-transfer rate performanceunder turbulent agitation in an air-water system. Blade streamlining was found to lead to a lower ungassed power number, a higher gas flow number before flooding, and increased insensitivity of impeller power dissipation to the gassing rate. This is consistent with the formation of smaller trailing vortices and ventilated cavities behind the blade. At the same power input and superficial gas velocity, however, the different impellers provided the same mixing time t0.05, gas holdup G, and specific mass-transfer coefficient KLa. Each of these variables correlates with the specific power input PG/VL, clearly suggesting that a better performance may be expected after retrofitting of Rushton turbines with streamlined impellers.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2000

Kód důvěrnosti údajů

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

Název periodika

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

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Svazek periodika

39

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

203-213

Kód UT WoS článku

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EID výsledku v databázi Scopus

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