[Equest-users] Fan Coil Fan Energy

[Robby Oylear]

I'm comparing two systems one is a 4-pipe fan coil system and one is a
PTHP system.  All of the savings between the two runs seem to make sense
except for a large difference in fan energy between the two.  I don't have
detailed product information on the actual fan energy so I currently have
the same kW/CFM value input for both systems.  The fan energy of the fan
coil system is 85% less than the PTHP system. 

 

I believe the problem lies with the fan coil system, because it doesn't
have an option available for "Fan Control".  I have the Indoor Fan Mode
set to Intermittent, which is how I believe the system would actually
operate since ventilation air is being delivered from a whole house fan.  

 

Can anyone explain to me how the FC system calculates fan power?  Why is
there no ability to change the fan control option?

 

Robby Oylear, LEEDR AP

Mechanical Engineer

direct: 206.788.4571

cell: 206.354.2721

www. <http://www.rushingco.com> rushingco.com

Logo_B&W_1

 

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