Review of air cleaning technologies in ventilation system for bio-aerosols

Chunxiao Su, Josephine Lau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Human beings are facing threats from bio-aerosols like pollens, mold, bacteria and viruses in indoor environments. Improving indoor air quality by applying air cleaners in air handling units can reduce high-energy consumption of ventilation and extra expenses related to absences from work, reduced productivity and medical treatments. Currently, there are several main types of air cleaning technologies (ACT) which are already well applied in air conditioning systems. Filters are the most commonly used ACT, which can offer relatively stable filtration efficiency. Ultraviolet germicidal irradiation (UVGI) systems use electromagnetic energy in the UVC spectrum to damage and prevent replication of microbial DNA and RNA. However, most standards for filters are based on data obtained from accelerated tests in labs, which may be quite different from actual situations. There is not enough evidence to verify the direct relationship between in-duct UVGI and the concentration of bio-aerosols in indoor environments. More studies should be performed to provide a more reliable connection between concentration of bio-aerosols and sick building syndrome or sick leave under the effect of different ACTs.

Original languageEnglish (US)
Title of host publication12th International Conference on Indoor Air Quality and Climate 2011
Pages1168-1173
Number of pages6
StatePublished - 2011
Event12th International Conference on Indoor Air Quality and Climate 2011 - Austin, TX, United States
Duration: Jun 5 2011Jun 10 2011

Publication series

Name12th International Conference on Indoor Air Quality and Climate 2011
Volume2

Other

Other12th International Conference on Indoor Air Quality and Climate 2011
CountryUnited States
CityAustin, TX
Period6/5/116/10/11

Keywords

  • Air cleaner
  • Bio-aerosol
  • Filter
  • UV
  • Ventilation

ASJC Scopus subject areas

  • Pollution

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  • Cite this

    Su, C., & Lau, J. (2011). Review of air cleaning technologies in ventilation system for bio-aerosols. In 12th International Conference on Indoor Air Quality and Climate 2011 (pp. 1168-1173). (12th International Conference on Indoor Air Quality and Climate 2011; Vol. 2).