ASHRAE DL Webinar - How to meet the ventilation required in international standard in an energy efficient way

Join us for the ASHRAE DL presentation. Today an acceptable indoor air quality is mainly defined by specifying the required level of ventilation in air changes per hour or the outside air supply rate. The increasing societal need for energy efficiency will often result in very tight buildings. This means that the amount of outside air supplied by infiltration is not enough to provide the required ventilation. In some standards, the required ventilation is based on adapted people (occupants) while other standards refer to un-adapted persons, who have just entered a room. Which approach is correct? Or should it depend on the type of space or occupancy? The present talk provides an overview and discusses the criteria used for specifying required ventilation rates and suggests ways of meeting the criteria in a more energy-efficient way by means of improved ventilation effectiveness, use of air cleaning, and by means of demand-controlled ventilation.