Natural Ventilation System
Operable windows provide natural ventilation in administrative, educational, and support spaces to help reduce the HVAC system fan energy usage. To determine the optimal window locations for natural airflow, the design team performed a computational fluid dynamics study. To maximize the number of hours of natural ventilation, the thermostat setpoint was expanded up to 78°F (25.5°C) for the upper comfort temperature instead of a typical 72°F (22°C). A notification system alerts building occupants when conditions are appropriate to open the windows. In addition, the atrium is 100% passively cooled, and passive heating strategies and winter solar collection take advantage of thermal massing in walls, ceilings and floors.
Naturally ventilated atrium and minimally conditioned courtyard