Monitoring on HR-vent hybrid ventilation project - first results

More than 700 million of measured data, 730 days, 55 dwellings: the HR-VENT hybrid ventilationdemonstration project applied in NANGIS (France) on a set of occupied collective dwellings is closely linked to its stakes. From January 2004 up to December 2005, the values of humidity, temperature, pressure, opening surface and gas appliance operation are saved every minute in all the wet rooms by specifically developed sensors. The first results of these new hybrid ventilation system monitoring are presented in this document.In particular, directly linked to the local meteorological data, these measurements aim to evaluate the ability of the new hybrid ventilation system to erase the back draught effects. Moreover, it is again possible to show the correlation between indoor relative humidity and IAQ. Pressure differences and airflows comparisons between storeys, influences of wind velocities and outdoor temperatures during a really significant period is well in agreement with the previous 1993 "Passive humidity controlled ventilation for existing dwellings" -Demonstration project EE/166/87