SCHOOL VENTILATION - GYMNASIUMS IN PRIMARY SCHOOLS

摘要

The main objective of this study was to determinethe ventilationdemand for a gymnasium inthe primary school based on verified metabolic rate.Norwegian guidelines recommend 6.0met as the activity level to be used when calculatingthe outdoor air flow ratein a gymnasium.Younger pupils have a lower body mass andmetabolic capacity thanadults, and theirdemandfor ventilation is therefore lower. The metabolic ratehas been assessed by measuringthepupils emission of the dominating bioeffluent CO2 duringintensive gymnastic activity. Theemission of CO2 was found to be 41 l/s per pupil which corresponds to an equivalentmetabolic rate of 2.5. When allowing a maximum Predicted PercentageDissatisfied (PPD) of30% this gives an outdoor air flow of 17 l/s per pupil as a set point value, which is less thanhalf of the 44 l/s per pupil based on design recommendations from the Norwegian guidelines.