[Equest-users] ER Wheel in Baseline

[Arunabha Sau via Equest-users]

Hey Anthony,

I believe you're absolutely right. Because of this confusion I posted in
the forum!
In my case, this is climate zone 5A. Supply Air is more than 5000 cfm per
fan. And the proposed system is on 100% OA with HR wheel. It's for a
car-repair bay/garage.
So you think the Baseline won't need an Heat Recovery Wheel? Should I be
modeling it as even 100% OA?


Best,
Aru Sau
*Architectural Sustainability | Energy Analyst*
*analyzing the ROI of your sustainable initiatives...
                                        *
*c: 678-467-7934, **Ann Arbor, MI*


On Tue, Nov 29, 2016 at 4:44 PM, Anthony <Anthony at greenengineer.com> wrote:

> Aru,
>
>
>
> I may be reading the question wrong but the proposed case system does NOT
> dictate baseline case ERV requirements.  If the autosized baseline case
> systems meet the characteristics outlined in 90.1-2007(?) Section
> G3.1.2.10, then an ERV must be included on that system unless one of the
> exceptions apply.
>
>
>
> *Anthony Hardman, **PE, BEAP, LEED AP BD+C*
>
> Senior Building Performance Analyst
>
> *The Green Engineer, Inc.*
>
> (978) 610-2801
>
>
>
> *From:* Darryl Kasun via Equest-users [mailto:equest-users at lists.
> onebuilding.org]
> *Sent:* Monday, November 28, 2016 10:12 PM
> *To:* Arunabha Sau
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] ER Wheel in Baseline
>
>
>
> Hi Aru,
>
>
>
> Yes you are correct - you have to create an exhaust air heat recovery with
> at least 50% effectiveness in your baseline bldg.  Check out section
> 6.5.6.1 of ASHRAE 90.1 for further guidance.
>
>
>
> Darryl Kasun, P. Eng,
>
> Interior Engineering
>
>
>
> On Mon, Nov 28, 2016 at 6:58 PM, Arunabha Sau via Equest-users <
> equest-users at lists.onebuilding.org> wrote:
>
> Hello there,
>
>
>
>
>
> In a 5A climate zone, I am working with a Proposed model with a RTU
> (30,000 CFM, 100% OA) with exhaust air ER wheel in it. I am kinda sure that
> I've to create a ER wheel for the 90.1 Baseline (as per G3.1.2.10). Just
> want to make sure if I am correct?
>
>
>
> Help please. Thanks
>
>
>
>
> Best,
>
> Aru Sau
>
> *Architectural Sustainability | Energy Analyst*
>
> *analyzing the ROI of your sustainable initiatives...
>                                           *
>
> *c: 678-467-7934 <678-467-7934>, Ann Arbor, MI*
>
>
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