[BLDG-SIM] eQuest: ASHRAE 90.1 query

[Nikhil Kapur]

Hi,
 
I would appreciate if someone could clarify this question regarding modeling ASHRAE 90.1 modeling in eQuest.
 
ASHRAE 90.1 requires the proposed and the budget design simulation models to have the same fan system efficiency for both the cases. The systems listed in ASHRAE 90.1 provide the total unit efficiencies at ARI conditions. 
 
How does one calculate the fan efficiency to model it separately from the system efficiency in eQuest. 
 
For e.g. for a rooftop packaged unit with an EER of 11.6 how does one know what the EER is without the indoor supply fan energy or alternatively what is the fan energy for the supply fans. 
 
Thanks
 
Nikhil
 
 
 


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