Fans (technical)

[F420]

Thanks skywalker , i wood neva have thoght about the 2 fans stressin each other out thanks for pointin that out.

 

Yes they do stress because the exhaust is moving more than the inlet is putting in to the grow box, and because the volume of air in the box is less than the maximum that the exhaust fan can push out.

The exhaust WILL stress anyways and only using passive vents mean it will stress MORE than if you use a small inlet fan.

 

But a smaller inlet fan at least in my mind can only help the cause because its filling the box up with air faster, therefore the exhaust fan is actually working less than if you have passive vents. ie- it has more air in the box already and doesnt need to stress about pulling the air in to the box AS WELL as exhausting the spent air.

 

And if your inlet fan is smaller than the exhaust fan then it cant stress it as its not building up any air pressure in the box.

 

 

But Luke is a very experianced grower and far more so then I, so give his method a go.

[wassily]

Yeah, give that a go, then when you find your box is too hot put a fan on your intake as well. :: Luke means well I'm sure.

[pipeman]

Oh, and the reason I don't advocate intake fans is that they're not necessary in the first place, if the room is airtight at all other points then the air can only come into the growroom at that point, and if it's far away from the extractor and low in the room, then the room will be fully evacuated. If you use a couple of fans, you're risking one fan straining the other, even if they're seemingly identical fans. If the intake is more powerful than the exhaust, then the exhaust will be straining to keep up and the intake will be straining to push air into a room which is already full... likewise if the intake is weak, but the only entry point for air, and the exhaust is strong, you'll end up straining the exhaust because it's trying to pull out more air than is being brought in, and the intake fan will be strained by the exhaust fan pulling out more than it can push through...

one things for sure, you're not a mechanical engineer ::

 

PS - glad to see you're still alive vaz

Edited July 9, 2004 by pipeman

[racked]

Cheerz everyone, i guess it`s just trial and erra hey.

[Luke Skywalker]

one things for sure, you're not a mechanical engineer 

 

::