Correlation between CO2 Concentration and Condensation in Homes

Abstract

A computer simulation model was used to study condensation and the air quality index in typical French homes (temperate climate). The correlation between condensation and overall air quality was low. The main risk of con densation occurs in kitchens and bathrooms. Hygro-adjustable ventilation, especially when combined with accelerated ventilation flow, reduced conden sation with little additional energy cost. It is concluded that ventilation sys tems should be designed that are capable of operating with three levels of activity: a reduced level for periods of non-occupancy, a low level for low occu pancy and a forced operating state, which can be governed by ambient humid ity and/or CO ₂ levels.