Understanding Ideal Loads Air System

[Chrew]

Hi everyone,
i have been using ILAS (ideal loads air system) for a while now and i am trying to understand how it works. i have done a little sketch from what i believe this is how it works. I would love to hear your opinions if i got this right.

[TrevorFedyna]

Hello @Chrew, Here is a link to the energyplus documentation for ideal loads air system
hopefully you find it helpful.
best
-trevor

[wallen]

Hi

This thread is possibly helpful too

Ideal Air Loads - separate space conditioning and ventilation heat/cool energy

Hi All We using ideal air loads at the early stages of projects very regularly. However, as far as I can see from the documentation, ideal air loads will not allow the space conditioning to be separated from the ventilation heating/cooling, since it’s a VAV type approach. This is problematic in the UK as we almost always have DOAS system and need to separate them for proper equipment sizing. Right now, our workaround is to set the fresh air requirements to zero for all rooms, which gives a goo…

It is a confusing component, but once you get confidence in what the outputs actually represent, it should be useful in your workflows.