The effects of outdoor air supply rate and supply air filter condition in classrooms on the preformance of schoolwork by children (RP-1257)

For that study, two independent field experiments were carried out in mechanically ventilated shool classrooms receiving 100 % outdoor air. Outdoor air supply rate and filter condition were manipulated to modify IAQ. The performance of schoolwork was then measured. The conditions were established for one week at a time in a blind crossover design with repeated measures on two classes of 10 to 12 year old children. During exercices, pupils indicated their environmental preceptions and the intensity of any symptoms on visual analogue scales. Results are presented, they indicate the importance of improving IAQ and ventilation in classrooms.