Characteristics of Pressure and Liquid Holdup Overshoot Following a Sudden Increase of Gas Flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F99%3A0003358" target="_blank" >RIV/60461373:22340/99:0003358 - 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

Characteristics of Pressure and Liquid Holdup Overshoot Following a Sudden Increase of Gas Flow

Popis výsledku v původním jazyce

The paper presents results of an experimental study of the hydrodynamics of counter-current packed bed column undergoing a step change of gas phase velocity. The existence of the earlier observed pressure overshoots has been confirmed. The oversh have been observed also on corresponding transient profiles of liquid holdup. The overshoots have appeared for step changes of gas rate from zero as well as non-zero gas rate if the change brings the system close to the flooding. No flooding, temporarily, has been proven to appear and be thus the cause of the overshoots. The magnitude and time of appearance of the overshoots have been evaluated from experimental transient date using a simple two-para obtained results indicates that the probable cause for the overshoot is the extra energy dissipation, needed for the flow redistribution near the gas inlet end of the bed, after the imposed gas velocity chan

Název v anglickém jazyce

Characteristics of Pressure and Liquid Holdup Overshoot Following a Sudden Increase of Gas Flow

Popis výsledku anglicky

The paper presents results of an experimental study of the hydrodynamics of counter-current packed bed column undergoing a step change of gas phase velocity. The existence of the earlier observed pressure overshoots has been confirmed. The oversh have been observed also on corresponding transient profiles of liquid holdup. The overshoots have appeared for step changes of gas rate from zero as well as non-zero gas rate if the change brings the system close to the flooding. No flooding, temporarily, has been proven to appear and be thus the cause of the overshoots. The magnitude and time of appearance of the overshoots have been evaluated from experimental transient date using a simple two-para obtained results indicates that the probable cause for the overshoot is the extra energy dissipation, needed for the flow redistribution near the gas inlet end of the bed, after the imposed gas velocity chan

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

1999

Kód důvěrnosti údajů

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

Název periodika

Chemical and Biochemical Engineering Quarterly

ISSN

03529568

e-ISSN

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Svazek periodika

13

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

HR - Chorvatská republika

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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