Fans consumption too high (OpenStudio)
 
  
 
  
 
 
 
 
 
 
    
        
        asked Mar 23  
 
 huy1912's avatar  
 
 
 
 
    
        
        updated Mar 24  
 
 Aaron Boranian's avatar  
 
 
 
 
 
My project uses a VRF system, but for some reason, if I leave the fan on all the time, the fan consumes a lot of energy. While leaving it running with the evaporator, the evaporator's energy consumption is too small.
here is the link : https://drive.google.com/drive/folder...
 
Preview: (hide)
 
 
 
 
          
 
Comments
1
I wasn't able to view the file location. But generally I find the default VRF fans on the terminal units to consume too much energy relative to existing technology. There are 2 aspects to consider. First. the pressure drop of the fans by default is 300 Pa. That is too high for non-ducted and still on the high side for most ducted. Second, the default fans are on/off whereas most systems are at least low/med/high speed. You can edit the Fan Power Ratio Function of Speed Ratio Curve to be closer to a typical fan power curve to mimic this.
Craig Simmons's avatar
                        Craig Simmons
                     (
    
        Mar 26
    )
add a comment