The relationship between outside air ventilation rate and indoor VOC concentrations was studied through measurements in an office building (the call center of a health maintenance organization - 4600 m2 - 290 persons). Direct relationships between ventilation rate and concentrations were not found for most VOC's.
A survey was conducted in a new office building in Beijing (China) with mechanical air supply and natural exhaust, in which sick building symptoms were reported. Measurements and data from a questionnaire suggested that ventilation was insufficient.
30 human subjects were exposed to simulated office conditions to study perceived air quality and sick building symptoms. The sensory pollution load of personal computers was found to be 3 olf each.
This paper describes the hybrid ventilation system of a new office building (650 employees) in Amsterdam (The Netherlands) equipped with a decentralized building automation and individual controls.
In a building with two parts, one with bad indoor air quality, workers have been moved around from one to another and absenteeism rate and causes have been monitored.
Difficulties of CFD calculations to predict comfort especially in case of high level of turbulences are enquired in this study. Statistical corrections when the direction of the velocity vector changes are proposed to improve CFD models.
The study presents a zonal model to evaluate the global comfort of air conditioned buildings. The model calculates various criterions such as Ppo and DR. Sound measure level is estimated with Sabine law. Comparisons with tests are presented.
Three portable air cleaners alone or combined with ultra-violet germicidal irradiations were tested to determine their capacity to remove airborne bacteria. Results give values of airborne bacteria removal rates.
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