Particle deposition in ventilation duct onto three-dimensional roughness elements

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

18 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)939-945
Journal / PublicationBuilding and Environment
Volume37
Issue number10
Publication statusPublished - Oct 2002
Externally publishedYes

Abstract

Gaining insights on particle deposition onto ventilation duct has many important applications. One key pathway by which outdoor polluted air enters the indoor environment is through mechanical ventilation ducts. An experimental system was designed for the study of particle deposition on regular arrays of uniform elements (in the form of discrete protrusions) in a turbulent ventilation duct flow using monodisperse tracer small particles, in the range 0.7-7.1 μm. The Reynolds number for the test conditions was 44,000 in the 150 mm square duct. Four different types of uniform roughness elements were tested. Compared to earlier measurements in the same duct system involving smooth or ribbed surfaces, a significant increase (up to 74 times) in deposition velocity onto the regular roughness elements is observed. © 2002 Elsevier Science Ltd. All rights reserved.

Research Area(s)

  • Particle deposition, Smooth and rough surfaces, Ventilation duct

Citation Format(s)

Particle deposition in ventilation duct onto three-dimensional roughness elements. / Lai, Alvin C.K; Byrne, Miriam A; Goddard, Anthony J.H.
In: Building and Environment, Vol. 37, No. 10, 10.2002, p. 939-945.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review