All things being equal wind driven turbine vents also known as a whirlybird roof vent do move more air than flat vents but only when the wind blows.
Attic vent wind turbine generator.
A turbine has a series of vanes that spin as wind passes through them.
Air vent airhawk 12 in aluminum externally braced roof turbine vent.
Unlike turbines this venting style does not have any moving parts.
Weathered wood galvanized internally braced dual bearing wind turbine model gic12ww view the master flow mechanical vents 35 45 35 45.
A turbine is installed directly on the top of a roof and uses wind power to suck hot and humid air out of the attic.
How much air must be moved.
Wind driven turbine vent wind driven roof vents will pull more air from the attic but only when the wind is blowing.
A single 14 inch diameter turbine vent that is subjected to 15 mph winds can expel up to 1 342 cfm of air.
Roof turbines built in thermostat roof turbines alum root 12 b vent cap.
Small turbine lots of air a small 12 inch diameter turbine vent with a constant wind speed of 5 miles per hour mph can remove 347 cubic feet of air per minute cfm from the attic space.
Turbine fans have angled slits cut into a capped cylinder which create a continuous fan blade.
Master flow 12 in.
Item 863694 model tob12sbr.