Numerical study of indoor air quality and thermal comfort under six kinds of air diffusion.

Q. Chen, A. Moser, P. Suter

Research output: Journal article publicationConference articleAcademic researchpeer-review

17 Citations (Scopus)


Research has been carried out to study local indoor air quality and thermal comfort in an office under six kinds of air diffusion for summer cooling conditions. The discomfort due to indoor air quality is calculated by the olf and decipol, the units for perceived air quality, and discomfort due to draft is calculated by a comfort equation accounting for turbulence intensity. The distributions of decipol and draft are computed by an airflow computer program based on a low-Reynolds-number k-e model of turbulence. It can be concluded that a fresh air change rate of five is required to maintain less than 20% dissatisfaction due to air quality, even though it is a low-olf office. The percentage of dissatisfied people due to draft is smaller than 15 % in the occupied zone in all cases. Outlet location and diffuser characteristics are very important for indoor air quality and thermal comfort.

Original languageEnglish
Pages (from-to)203-217
Number of pages15
JournalASHRAE Transactions
Issue numberpt 1
Publication statusPublished - 1992
EventASHRAE Winter Meeting - Anaheim, CA, USA
Duration: 25 Jan 199229 Jan 1992

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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