[Bldg-sim] Exceptional Calculation Method for Demand Controlled Ventilation

Aleka Pappas apappas.enermodal at gmail.com
Tue Mar 18 09:15:08 PDT 2008

I got a LEED submittal review last month that didn't allow modeling DCV in
eQuest without using the 'exceptional calculation method'.  You can model
DCV with the keyword in eQuest, but (some) LEED reviewers want to see
savings isolated from the measure.  It just ends up being a bit more
modeling/ reporting time on our end.


On Tue, Mar 18, 2008 at 9:13 AM, Jessica XP <xupingjessica at gmail.com> wrote:

> Hi folks,
> I am simulating a 24-floor building to be LEED certified. The software is
> Equest. In order to achieve as many points as possible in EA CR1,
> demand-controlled ventilation (DCV) has been modeled in the proposed design.
> But we are not sure if this stragety needs Exception Calculation Method
> requested by USGBC. In one of CIR historical archive of LEED online, USGBC
> requested exceptional calculation method for schedule-based DCV models. I
> have no idea if USGBC would treat DCV models in Equest as those of
> schedule-based.
> The use or removal of DCV will decisively impact the achieveable points of
> EA CR1. I am wondering if anyone in this community has clear picture on this
> issue.
> Thanks in advance.
> Jessi
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