Forum discussion
NC-2009 IEQp1: Minimum IAQ Performance
Hi,
I have a lobby which has one side is open to outside. But the length of lobby is almost 40ft instead of 25ft. And their are 8 ceiling fans evenly. Could be this the case for engineered natural ventilation in IEQp1?
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Is outdoor air quality testing required in a space using natural ventilation?
What options are available to projects outside the US to meet this prerequisite?
Can LEED 2009 projects elect to follow ASHRAE 62.1-2010 for this prerequisite?
Which units should be included in the calculations for this prerequisite?
Andrew Mitchell, P.E.
PrincipalMitchell Gulledge Engineering, Inc.
LEEDuser Expert
126 thumbs up
February 16, 2016 - 2:21 pm
If you can document that the air circulation induces OA all the way to the back, then you can submit it. Otherwise, install a small inline fan in the ceiling to meet the requirements of the remaining 15 feet and submit under mixed mode ventilation.
Harry Flamm
Senior Sustainability ConsultantStantec Architecture
12 thumbs up
April 15, 2016 - 10:53 am
Andrew,
Regarding your point about installing an "inline fan" to mitigate the 25' distance requirement, is this technique something that LEED has previously accepted? I have an occupied space that is 28' away and see this as a simple solution -- both for my current project, and for future designs.
Andrew Mitchell, P.E.
PrincipalMitchell Gulledge Engineering, Inc.
LEEDuser Expert
126 thumbs up
April 15, 2016 - 4:25 pm
I have not done this exactly, but I have used mixed mode ventilation successfully.