[EnergyPlus_Support] Re: HVAC COMPACT and Return Fans

["JV Dirkes II" <jvd2pe@xxxxxxx>]

Dear Andre,

I have NOT performed the specific modification you are describing, bit
I have performed the same general modification for other changes to
Compact HVAC objects.

First, run the simulation for the Compact HVAC system you exported
from DB.
Second, edit the .expidf file that is created; add the return fan (or
perhaps (for a constant volume system) just increase the pressure on
the supply fan so the power matches the combined supply + return fan
power.
Third, make sure schedules, nodes equipment configuration and other
affected objects are modified to include the return fan.
Fourth, save the .expidf as a new .idf
Fifth, run the simulation for the new .idf
Sixth, debug as necessary....



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, André Lopes
<andr_lopes2000@...> wrote:
>
> Good Morning
> 
> Is it possible using an HVAC Compact configuration (the file was
exported from Design Builder) to add a Return Fan on a AHU?
> 
> Regards
> 
> A L
> 
> 
>      
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