[Equest-users] eQUEST infiltration rate

[Daric Adair]

The 0.038 cfm/ft2 is the Wizard Default. We typically override it to a higher value, but not to 0.4 cfm/sf. That’s at a pressure well above typical building pressurization. We’ve used 0.04 and 0.05 in the past with no questions asked. ASHRAE 90.1-2016 G3.1.1.4 has defined a method to determine the infiltration rate.

Thanks,
DARIC ADAIR PE, CEM, BEMP
Mechanical Engineer, Energy Analyst

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From: Phil Jordan <phil.jordan at clearesult.com>
Sent: Monday, October 26, 2020 11:15 AM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] eQUEST infiltration rate

Is that the default the wizard uses? I believe it’s been 0.4 cfm/ft2 (@ 0.3 in. of water) for the past few cycles of 90.1 at least (Section 5.4.3).

Regards,

Phil Jordan

From: Equest-users <equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org>> On Behalf Of Lapierre, Patrick via Equest-users
Sent: Monday, October 26, 2020 9:09 AM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] eQUEST infiltration rate

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Hello all,

Does anyone remember where in ASHRAE is referenced the default value for infiltration (0.38 cfm/ft2) that eQUEST uses?
I can’t seem to trace it back, yet I’m pretty sure it comes from ASHRAE.

Thank you,


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Patrick Lapierre_ing. BEMP, Chargé de projets
Développement durable et Efficacité énergétique
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