Publication detail

Non-isothermal Pollution Release and its Effect on Capture Efficiency of a Reinforced Exhaust System

KREJČÍ, V. JÍCHA, M. PAVELEK, M.

Original Title

Non-isothermal Pollution Release and its Effect on Capture Efficiency of a Reinforced Exhaust System

English Title

Non-isothermal Pollution Release and its Effect on Capture Efficiency of a Reinforced Exhaust System

Type

conference paper

Language

en

Original Abstract

The paper deals with CFD simulations of a reinforced exhaust system (Aaberg exhaust hood in particular). The hood makes use of a radial jet to amplify polluted air extraction from a space in front of a hood. The use of a radial jet leads to a directional flow pattern. This flow pattern is beneficial if the pollution is generated inside the efficient region of the hood where it can be captured. In case of the non-isothermal pollution generated, the hood has to be orientated according to the pollution release direction. The effects of gravity are investigated on various cases to account for geometrical arrangement. Recently, it has been found out that the Aaberg hood performance depends distinctly on the presence of obstacles, such as a workbench, close to the hood. Therefore, a specific setup was chosen so the hood's performance is not deteriorated. The results are also compared with the traditional flanged hood.

English abstract

The paper deals with CFD simulations of a reinforced exhaust system (Aaberg exhaust hood in particular). The hood makes use of a radial jet to amplify polluted air extraction from a space in front of a hood. The use of a radial jet leads to a directional flow pattern. This flow pattern is beneficial if the pollution is generated inside the efficient region of the hood where it can be captured. In case of the non-isothermal pollution generated, the hood has to be orientated according to the pollution release direction. The effects of gravity are investigated on various cases to account for geometrical arrangement. Recently, it has been found out that the Aaberg hood performance depends distinctly on the presence of obstacles, such as a workbench, close to the hood. Therefore, a specific setup was chosen so the hood's performance is not deteriorated. The results are also compared with the traditional flanged hood.

Keywords

CFD, REEXS, Industrial Ventilation, Local Ventilation, Aaberg Exhaust Hood

RIV year

2006

Released

16.05.2006

Publisher

Společnost pro techniku prostředí

Location

Praha

ISBN

80-02-01811-7

Book

Proceedings of 17th Airconditioning and Ventilation Conference 2006

Pages from

179

Pages to

182

Pages count

4

URL

BibTex


@inproceedings{BUT18782,
  author="Vladimír {Krejčí} and Miroslav {Jícha} and Milan {Pavelek}",
  title="Non-isothermal Pollution Release and its Effect on Capture Efficiency of a Reinforced Exhaust System",
  annote="The paper deals with CFD simulations of a reinforced exhaust system (Aaberg exhaust hood in particular). The hood makes use of a radial jet to amplify polluted air extraction from a space in front of a hood. The use of a radial jet leads to a directional flow pattern. This flow pattern is beneficial if the pollution is generated inside the efficient region of the hood where it can be captured. In case of the non-isothermal pollution generated, the hood has to be orientated according to the pollution release direction. The effects of gravity are investigated on various cases to account for geometrical arrangement. Recently, it has been found out that the Aaberg hood performance depends distinctly on the presence of obstacles, such as a workbench, close to the hood. Therefore, a specific setup was chosen so the hood's performance is not deteriorated. The results are also compared with the traditional flanged hood.
",
  address="Společnost pro techniku prostředí",
  booktitle="Proceedings of 17th Airconditioning and Ventilation Conference 2006",
  chapter="18782",
  institution="Společnost pro techniku prostředí",
  year="2006",
  month="may",
  pages="179",
  publisher="Společnost pro techniku prostředí",
  type="conference paper"
}