Canadian Consulting Engineer



MECHANICAL OPERATION FOR SPRING/FALL1 Fan coils locked out, windows and stack dampers open, to allow cross ventilation.2Hot air rises through openings in atria to create pressure differential. 'Stack effect' draws air in operable windows. Wind pressure raises air change rate, passive cooling.3As outdoor air temperature rises, solaron stacks use wind and built-up heat to suck hot air out of the building. Smoke exhaust fans are turned on to assist ventilation.4Stack effect draws air through intake grille, into underground plenum where air is passively cooled, and then up through floor diffusers into classrooms, labs and theatres.5Relief air hoods open on the roof. Hot air rises up through relief air hoods, creating pressure differential. As outside temperature rises, fans are activated to assist ventilation.