Hi everyone.

Im hoping someone can tell me speed, in MPH, of airflow from an extractor fan

please.

The extractor is 8inches (200mm) diameter.

Figures says its 1600m3/hr.

 

Any help greatly appreciated.

Is this homework help?

 

You need to calculate the length of 8" pipe that would equal 1^3 meter and divide 1600 by that number to find the number of meters per hour that air is traveling. Then you can convert that to miles.

or just divide by the crosssectional area in m^2 to get m/s then convert that to miles per hour.

Is this homework help?

 

You need to calculate the length of 8" pipe that would equal 1^3 meter and divide 1600 by that number to find the number of meters per hour that air is traveling. Then you can convert that to miles.

 

Hi doG. Many thanks for reply.

Nope, its windtunnel help....

Set up a makeshift wind tunnel to test aerodynamic effect of new roof plug im doing.

Was curious as to MPH of test, and how that may change with extra MPH.

Extractor didnt have any tubing, other than the outlet:

 

Sorry, i dont understand what "1^3" means.....

Sorry, i dont understand what "1^3" means.....

 

If I'm reading it right, it means "cubic"

 

I think 1 m^3 would be the equivalent way of stating it.

That's what I meant.

 

Firestarter, how long of an 8" pipe, in miles, would it take to encompass 1600m^3? Since the hours cancel each other out in the division this length would be your answer.

Many thanks for all replies.

I looked "^" said it meant something different.....so thanks for clarifying.

 

Okay...i looked up values online.

1600(M^3) = 56503.4668 FT^3

 

1 foot of 8inch tubing is 0.349 cubic feet.

 

Divided. Got:

161901.051002865.

 

That equals= 30.6630miles.

So, i guess thats the speed?

Yep

http://i114.photobucket.com/albums/n244/ukcjm/PICT0149PP.jpg

 

 

Yay!! Fantastic...greatly appreciated.

 

Hopefully above will be link to pic' of roof plug........