[Bldg-sim] 90.1-2010 ECB and PRM questions

Fri Jul 14 08:08:43 PDT 2017

Dear Chris,
I think the "letter of the law" does not require that you model shading
from an adjacent building for you Baseline.

The "spirit of the law" doesn't seem to *require *it, either. A Baseline
building is intended to be a minimum performance standard against which
your building is compared. For the Proposed building, the owner was not
compelled to select a site with shading from an adjacent building - it
could have been in the middle of a corn field with no shading. As a result,
it seems that you need not include the shading in the Baseline.

It might, however, be beneficial *or *detrimental to include the shading in
the Baseline, and it seems acceptable to do either within the standard's
requirements. I'm imagining a situation where the shading blocks winter sun
and is a net detriment to energy use. If I wanted a rigorous comparison,
I'd make the Baseline model in the manner that gave the lowest Baseline
energy use. If I wanted the most savings :), I'd include the adjacent
building in the Baseline so as not to be penalized.

I agree that the Baseline model must include mandatory requirements for
daylighting.

On Thu, Jul 13, 2017 at 8:07 AM, Jones, Christopher via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:

> Hello Sim Folks,
>
> I have two questions regarding 90.1-2010 ECB and PRM. Our building code
> references ECB and LEED references App. G PRM.
>
>
>
> Shading due to adjacent buildings – should this shading be modeled for:
>
> ECB –
>
> PRM –
>
>
>
> 90.1-2010 ECB doesn’t directly refer to shading by other buildings.
>
> App. G as detailed in the PNNL PRM Manual states that external shading
> from other buildings or other objects can be modeled for 90.1-2010 PRM.
>
>
>
> Therefore, I believe one can choose to model that shading or one can
> ignore it.
>
>
>
>
>
> Daylighting controls – should daylighting controls be modeled for:
>
> ECB –
>
> PRM –
>
>
>
> Re. Daylighting:
>
> Reviewing Section 11.1.4 Compliance with Section 11 will be achieved if:
>
> a.       All requirements of Sections 5.4, 6.4, 7.4, 8.4, *9.4*, and 10.4
> are met;
>
>
>
> Table 11.3.1, 6. Lighting, Baseline: Lighting controls shall be the
> minimum required.
>
>
>
> These clauses lead me to believe that daylighting controls should be
> modeled in the baseline using the correct side-lighted and top-lighted area
> calculations.
>
>
>
> App. G as detailed in the PNNL PRM Manual is clear – daylighting controls
> are to be modeled in the baseline.
>
>
>
> Any and all thoughts appreciated.
>
>
>
>
>
> *Christopher R. Jones*, P.Eng.
>
> Technical Specialist
>
> Sustainability & Energy
>
>
>
> T +1 416-644-0252 <(416)%20644-0252>
>
>
>
> 2300 Yonge Street, Suite 2300
>
> Toronto, ON M4P 1E4 Canada
>
> wsp.com
>
>
>
>
>
> *Please consider the environment before printing...*
>
>
>
>
>
> *From:* Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] *On
> Behalf Of *Sprout Info_Mail via Bldg-sim
> *Sent:* Thursday, June 29, 2017 10:38 PM
> *To:* Mayank Bhatnagar <mayank.23aug at gmail.com>
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Building Energy Simulation: A Workbook Using
> DesignBuilder
>
>
>
> Ohh wow Mayank.
>
>
>
> This is really great. Thanks for sharing.
>
> Does anybody have any more such resources.Please share.
>
>
>
> Regards,
>
> Namrata Dhamankar
>
>
>
>
>
> On 29 Jun 2017 20:01, "Mayank Bhatnagar via Bldg-sim" <
> bldg-sim at lists.onebuilding.org> wrote:
>
> Hello everyone,
>
>
>
> I have been searching for some books on basics of building physics, and
> energy simulation and found a very nice resource to understand the building
> physics along with energy simulation.
>
>
>
> Hope this will help to new members in the field of energy modelling and
> simulation. The book is available at:
>
>
>
> https://www.amazon.com/Building-Energy-Simulation-
> Workbook-DesignBuilderTM/dp/1498744516/ref=sr_1_1?ie=UTF8&
> qid=1498012115&sr=8-1&keywords=energy+simulation
>
>
>
> https://www.crcpress.com/Building-Energy-Simulation-A-
> Workbook-Using-DesignBuilder/Garg-Mathur-Tetali-Bhatia/p/
> book/9781498744515
>
>
>
> Regards,
>
>
>
> Mayank Bhatnagar
>
>
>
> Sr. Energy Analyst | Research Scholar
>
>
>
>
>
>
>
>
>
>
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