Correlations between CO2 and Steam concentrations Measured in 60 Occupied Housing Units.

Within the framework of demonstration and industrial pilot projects in the energy sector supported by the Commission of the European Economic Communities, an important experiment has been dedicated to the HYGRO-ADJUSTABLE NATURAL VENTILATION (Contrat EE/166/87/FR). The experiment took place on three sites: Les ULIS (France), NAMUR (Belgium) and SCHIEDAM (the Netherlands). A comparison has been made for each site between the ventilation flow rates and the quality of air in ten housing units fitted with hygro-adjustable natural ventilation equipment and ten equivalent housing units fitted with passive ventilation systems.