Analysis and validation of particle separation efficiency in a centrifugal field under laminar and perfect mixing conditions

Research output: Contribution to journalConference articlepeer-review

Abstract

In the area of large volume air cleaning, existing literature concluded that it was impractical using cyclones to achieve a particle cut size smaller than 10 μm. Particle cut size refers to the particle diameter at which the collection efficiency is 50%. Cvclone technology has been limited to use for small volume air sampling or large particle separation (typically larger than 25 μm in diameter). This paper reexamines the existing cyclone theory and particle separation in a centrifugal field. Particle separation efficiency under laminar and perfect mixing flow conditions was analyzed and equations were developed. These separation efficiency equations define the range of particle separation efficiency for a given design. The equations were validated using a uniflow deduster-a low-pressure uniflow cyclone type particle separation device. The particle cut size of the deduster was 4 μm at a pressure drop of 100 Pa (0.4 in. water) and a flow rate of 135 L/s. Effects of other forces involved in the particle separation process, such as electrostatic and diffusive forces, are discussed after comparing the models and the experimental data.

Original languageEnglish (US)
Pages (from-to)815-821
Number of pages7
JournalASHRAE Transactions
Volume109 PART 2
StatePublished - 2003
Event2003 Annual Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers - Kansas, United States
Duration: Jun 28 2003Jul 2 2003

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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