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Chimney cowls
Chimney cowls are mounted on the top of chimney ducts. Their purpose is to prevent the chimney from downwind, rainwater and bird nesting, but most of all they are designed to generate chimney draught using force of the wind
DESCRIPTION:
Chimney cowls are designed to stabilize and increase chimney draught in ventilation and smoke ducts.
In Darco offer there are rotary chimney cowls used to improve draught in ventilation ducts, self - adjusting chimney cowls that can be used for flue/smoke ducts, hybrid chimney cowls, that use force of the wind and, when it is not sufficient, electrical motor power, static chimney cowls and mechanical ones - draught generators.
Wind makes them rotate and create chimney draught in ventilation ducts.
Work like ordinary wind turbines when wind conditions are sufficient, when not, electric motor speeds the cowl up to...
Self-adjusting chimney cowls use force of the wind to increase chimney draught. The cap always places itself in...
Their principle is to increase and stabilize chimney draught no matter of what the chimney height, wind speed or other...
Construction of the cowls creates a pressure difference in their inlet - forcing the air in the duct to move up.
They allow chimney cowls to be mounted on various roof types and chimney endings
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