EVALUATION OF MULTIDIMENSIONAL EFFECT OF NATURAL DRAFT WET-COOLING TOWER FLOW

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

EVALUATION OF MULTIDIMENSIONAL EFFECT OF NATURAL DRAFT WET-COOLING TOWER FLOW

Popis výsledku v původním jazyce

The computational study of the flow fields inside the natural draft wet-cooling tower has been done. Obtained results allow evaluating the influence of particular parts on the flow field inside cooling tower. The effect of rain zone, fill zone and flue gas injection are studied. It is shown that the flow field above the fill zone is mainly influenced by minor losses in cooling tower fill and by the controlling of the flow direction in this zone. This effect is leading to practically uniform velocity field just above the fill zone even though the flow field in the rain zone is multidimensional. The impact of flue gas injection is studied by using momentum and kinetic energy flux coefficients. The system of Euler equations for quasi-one-dimensional flow is generalized using momentum and kinetic energy flux coefficients. It is shown that the flow field inside cooling tower excluding rain zone can be considered as quasi-one-dimensional in the case where the flue gas injection is not taken into account. The effect of flue gas injection slightly deviates the character of the flow, which is still very close to quasi-one-dimensional flow in the whole domain excluding rain zone.

Název v anglickém jazyce

EVALUATION OF MULTIDIMENSIONAL EFFECT OF NATURAL DRAFT WET-COOLING TOWER FLOW

Popis výsledku anglicky

The computational study of the flow fields inside the natural draft wet-cooling tower has been done. Obtained results allow evaluating the influence of particular parts on the flow field inside cooling tower. The effect of rain zone, fill zone and flue gas injection are studied. It is shown that the flow field above the fill zone is mainly influenced by minor losses in cooling tower fill and by the controlling of the flow direction in this zone. This effect is leading to practically uniform velocity field just above the fill zone even though the flow field in the rain zone is multidimensional. The impact of flue gas injection is studied by using momentum and kinetic energy flux coefficients. The system of Euler equations for quasi-one-dimensional flow is generalized using momentum and kinetic energy flux coefficients. It is shown that the flow field inside cooling tower excluding rain zone can be considered as quasi-one-dimensional in the case where the flue gas injection is not taken into account. The effect of flue gas injection slightly deviates the character of the flow, which is still very close to quasi-one-dimensional flow in the whole domain excluding rain zone.

Druh

D - Stať ve sborníku

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

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Projekt

<a href="/cs/project/TE01020036" target="_blank" >TE01020036: Pokročilé technologie pro výrobu tepla a elektřiny</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Engineering Mechanics 2016 - Book of full texts

ISBN

978-80-87012-59-8

ISSN

1805-8248

e-ISSN

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Počet stran výsledku

4

Strana od-do

230-233

Název nakladatele

Institute of Thermomechanics, AS CR, v.v.i.

Místo vydání

Prague

Místo konání akce

Svratka

Datum konání akce

9. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000379986700054