Mainly around the aerodynamic wind load shape theory, “when the wind acts on the object, the windward side is the pressure, the leeward side and the downwind side are the suction”. At the same time, combined with the building structural mechanics, after numerous tests and improvements, a relatively perfect product has been formed. Its performance is mainly reflected in:
(1) The overall design is streamline arc type, which not only ensures the strength of the ventilator body, but also effectively reduces the wind pressure on the ventilator body;
(2) By using the large volume formed by the height and arc of ventilator body, the collection and emission capacity of indoor air is effectively improved;
(3) A booster air trough (also a drain) is arranged to gather the wind force on the roof, which forms a downward upward wind pressure thrust on the ventilator and drives the air in the heat accumulation bin to discharge upward;
(4) Any direction of wind over the top of the ventilator will inevitably form suction to the air outlet, and improve the speed of the ventilator.
Installation quantity of ventilator = a building volume * b air change times per hour / C air change capacity of single ventilator
A. Building volume = building length * building width * building height
B. Air change times: selected according to the use function of the building
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