Air Change Rate Question

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This should be a quick question, but with eQuest you never know.

I am trying to set my ACH rates to 12, and in an parametric run, turn it
down to 6. This doesn't appear to be working because the entry line for the
ACH is minimum air to the zone.

Is there a way to set the air flow to see the ACH minimum air as a maximum?

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Rob Hudson

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Rob,

I believe you can use the Overall Design Flow (ASSIGNED-FLOW) at the zone level to set your maximum flow rate. It's in CFM not ACH but you can let eQuest do the math for you. In the "Edit/View User Expression" box enter: 12*#LR("SPACE","AREA")*10/60. Where 12 is your ACH rate (use a Global Parameter to make life easier when you start changing it in the parametric run) and 10 is your floor to ceiling height.

Matt Dubrovich, P.E.

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this worked nicely. Thanks for the input.

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