[Bldg-sim] G3.1.2.5 Clarification

Rob Hudson rdh4176 at gmail.com
Thu Oct 28 06:49:26 PDT 2010

I agree with Jon.  The increased Ventilation rate of 130% OA is for comfort
only, and should show an increase in energy usage when compared to the
baseline.  this is the approach my firm has always took when solving this
little riddle.


On Thu, Oct 28, 2010 at 9:41 AM, Jon Matthews <jonmatthews10 at yahoo.com>wrote:

> Baseline building should always be just providing the minimum outdoor air
> ventilation rate required by 62.1. It should never be increased. For
> proposed, it just means that your OA should never be below the minimum OA
> requirement of 62.1. Now if the design chooses to pursue 30% more OA. Then
> you should reflect in your model what is in the design. G3.1.2.5 just wants
> to make sure that you do not model your proposed to be below the minimum OA.
> Providing 30% more OA can earn you a credit but it will affect your EAc1.
> Jon
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Rob Hudson
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