Provided the outside air temperature is relatively cool, at least on the side where the roof is at its lowest, it should work quite well. The basic idea behind the design is that warm air rises due to its lower density. It will rise into the inclined recess in the ceiling and out through the louvred outlet vent. As the warm air rises and exits on the high side, it is replaced with cooler fresh air from the outside at the low side. Such a temperature-driven cycle is the essence of a convection current. The greater the temperature difference between the air on the inside and that on the outside, the faster the air will move (within limits determined primarily by the cross-sectional areas and geometries of the inlet and outlet “ports”), so if they’ve done the design correctly for the expected ambient temperature conditions and the number of people, it should work fine. In winter when it’s cold outside the inlet and outlet “ports” need merely be constricted or closed entirely to keep the warm air inside.
One possible enhancement to this system is to channel the fresh air through a mist chamber before it enters the classrooms. In a mist chamber (which needn’t be huge), very fine water sprays (misting nozzles) add some evaporative cooling and also increase the air’s relative humidity. If the outside air is cool enough already, the water merely needs to be turned off. The water consumption would be very low but a good minimum pressure would be required for the misting nozzles to work properly.
'Luthon64
"Sensitive" people are now carefully examining the entire universe, trying to find something to be "offended" at. It won't stop until such time as the "offenders" learn to stop apologizing, and saying "freck off" instead. — brianvds, The ShoutBox Classics, 02/07/2018.