How does eQuest designates total supply CFM for VAV units?

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Hi All,

I was wondering if anyone could provide some insight on to VAV systems in eQuest.
My modeling process:

Set min cfm/sqft=0.4 (As per guidelines)
Supply air to room air temperature difference of 200F

However, it seems as if supply cfm capacity mentioned in report (SV-A) is always high. However, maximum fan load in SS-H never seems to reach the peak (based on my kw/cfm input) .
This makes me think that eQuest is oversizing the supply cfm quite a bit. Could someone provide some guideline on this issue. Am I missing something?

Thanks,
Bikesh

via Equest-users's picture
Joined: 2016-07-15
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Bikesh,

I would refer you to the following document:
https://energydesignresources.com/media/2651/EDR_DesignGuidelines_VAV.pdf?tracked=true

Happy hunting!

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via Equest-users's picture
Joined: 2016-07-15
Reputation: 400