LumberJocks

Increased rpm = increased cfm?

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by AKAndrew posted 12-20-2011 01:28 AM 762 views 0 times favorited 2 replies Add to Favorites Watch
View AKAndrew's profile

AKAndrew

53 posts in 2242 days


12-20-2011 01:28 AM

If you spin the impeller faster by adding a pulley, does it increase the cfm?


2 replies so far

View Brickman's profile

Brickman

51 posts in 1838 days


#1 posted 12-20-2011 02:00 AM

And if you get outside the intended CFM range the impeller will start to stall and you will actually decrease intake performance. This is a common problem in diesel trucks when you start modifying them. You get outside of the turbo’s designed pressure map and start to have turbo stall.

-- Mark - Pueblo, Colorado

View Maniteee's profile

Maniteee

7 posts in 2137 days


#2 posted 12-20-2011 02:25 AM

From my Navy days
Pump (Fan) Laws:
Flow is proportional to Speed
Flow is proportional to Headloss squared(Friction or Drag… pressure drop)
Flow is proportional to Power cubed
So if you double the flow you use 8 times more power.

-- Chris, Canterbury, CT

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com