3 Replies Latest reply on Oct 16, 2009 3:47 PM by 1-LCMWNG

Fan Curve versus Fan - Is there a difference?

Drew Castle Oct 9, 2009 3:57 PM

This might seem like a really simple question, but does anybody know what the difference is between assigning fans or just assigning the fan curve in a project?

I have run various simulations using one or the other, and have not noticed a significant difference between the two.

Re: Fan Curve versus Fan - Is there a difference?

David Maxham Oct 12, 2009 4:19 PM (in response to Drew Castle)

I'm not sure, but by just assigning a fan, you may be getting a fixed flowrate. Or, if by assigning the fan, you may be getting the same fan curve that you're entering and that's why you're getting similar results.

Dave
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- Re: Fan Curve versus Fan - Is there a difference?
  
  Drew Castle Oct 13, 2009 1:22 PM (in response to David Maxham)
  
  Thanks, Dave.
  
  That's where my confusion lies. Fans in the engineering database or fans you define all have fan curves associated with them anyway so you're getting the same flow rate whether you pick the fan or the curve.
  
  The only possibility I could see would be whether or not the fan curve accounts for the swirling airflow of an axial fan, or if the regular fan accounts for this at all.
  
  Drew.
  
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  - Re: Fan Curve versus Fan - Is there a difference?
    
    1-LCMWNG Oct 16, 2009 3:47 PM (in response to Drew Castle)
    
    Hi Drew,
    
    I noticed that you can specify rotating air flow only when a fan curve is selected. Doesn't work when you just use the fan.
    
    Nikhit
    
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