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[EnergyPlus_Support] Fresh Air Issues



Hey Everybody,

So I am currently trying to model a building for energy analysis. One glaring deficiency is that the building only pulls 100% fresh air, and there is no return air ductwork or economizer. This is obviously a glaring issue that I want to fix, however I am currently at a loss as exactly how to do this or if there are any work-arounds that will let me do it in a an easy manner.

Basically, my initial plan was to try to fenagle something in HVAC Templates where I set the fan CFM @ what it is measured at (ie 10,000 CFM) then set the max/min outdoor air @ the same CFM rate so that EnergyPlus is just assuming 100% FA all day, every day (such that it would be leaving via the relief air ductwork). Is this the best way to do it? In reality there is no relief air ductwork since the system just pressurizes the building and forces air out of the cracks etc...

I was then working on the .expidf and was curious if anybody had a good way of doing this using the AirLoop HVAC?

Basically: what is the best way to model a system with 100% fresh air and no return ductwork/relief ductwork



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