Control of Airborne Particle Concentration and Draught Risk in an Operating Room

Qingyan Chen, Zheng Jiang, Alfred Moser

Research output: Journal article publicationJournal articleAcademic researchpeer-review

47 Citations (Scopus)


The influence of location of airborne particle source, ventilation rate, air inlet size, supply air velocity, air outlet location, and heat source on the dkributiuns of airborne particle concentration and draught risk in an operating room is investigated. The investigation is carried out by using a flow program with the k‐E mdel of turbulence. Based on a standard case, five cases, each with one changed parameter, are computed, and the detailed field distributions of air velocity, temperature, airborne particle concentration, and draught risk are presented. The parametric study concludes that, for a better air quality and thermal comfort, it is desirable to use a higher inflow rate, a larger inlet area, and a uniform velocity profile of supply air. Outlet location and heat source have little influence on the disrributions of the particle concentration in the room. It has also been found that the distributions of particle concentration in the recirculating zone are very sensitive to the location of the particle sources.

Original languageEnglish
Pages (from-to)154-167
Number of pages14
JournalIndoor Air
Issue number3
Publication statusPublished - Sept 1992


  • Airflow
  • Comfort
  • Computation
  • Concentration
  • Design
  • Hospital

ASJC Scopus subject areas

  • Environmental Engineering
  • Building and Construction
  • Public Health, Environmental and Occupational Health


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