Indoor air quality and HVAC expenses are determined in great part by ventilation. A higher airflow requires more fan power, and depending on the season this can also increase air conditioning costs or space heating costs. However, there is a limit to how much the ventilation airflow can be reduced, since fresh air requirements increase […] Cet article The 2019 Design Guide to Demand Control Ventilation Airflow Beyond Occupancy Sensors Based on ASHRAE 62.1 & 62.2 est apparu en premier sur Fo...