Local Exhaust Ventilation: a numerical and experimental study of capture efficiency

Ulla Madsen, N. O. Breum, Peter V. Nielsen

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Abstract

Capture efficiency of a local exhaust system, e.g. a kitchen hood, should include only contaminants being direct captured. In this study basic concepts of local exhaust capture efficiency are given, based on the idea of a control box. A validated numerical model is used for estimation of the capture efficiency. An experimental technique is introduced for field studies taking into account knowledge of flow patterns of air and contaminants obtained from smoke testing and contaminant concentrations. Holding together numerical and experimental data a fair agreement is observed.
Original languageEnglish
Place of PublicationAalborg
PublisherDept. of Building Technology and Structural Engineering
Number of pages6
Publication statusPublished - 1993
SeriesIndoor Environmental Technology
Number33
VolumeR9336
ISSN0902-7513

Bibliographical note

Presented at Indoor Air '93 The 6th International Conference on Indoor Air Quality and Climate, Helsinki, Finland, July 1993

PDF for print: 12 pp.

Keywords

  • Aircondition
  • Capture Efficiency
  • Local Exhaust Ventilation

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