Calculate cfm of an exhaust fan

Reply

  #1  
Old 03-11-09, 02:54 AM
V
Member
Thread Starter
Join Date: Mar 2009
Posts: 1
Received 0 Votes on 0 Posts
Calculate cfm of an exhaust fan

Hi Everyone,

Am creating a simulator application for HVAC. I also need to calculate the CFM of exhaust fan. Is there any generalized formula to calculate the approximate air flow rate of exhaust fan given motor & fan specifications. If anyone know, please do tell me. It'll be a great help for my application. Thanks in advance...
 
  #2  
Old 03-11-09, 06:25 AM
B
Member
Join Date: Oct 2008
Location: New England
Posts: 10,524
Received 37 Votes on 34 Posts
Hi Vin, there are general approximations, but I know of no list for mfg, or specified motors to relate to exhaust volume. In the energy auditing business we have a special hood to place over the exhaust fan (when it fits) to measure the depressurization. From that we can estimate the cfm rating. How accurate do you need to be?

Bud
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: