[Bldg-sim] multi-energy simulation at neighbourhood scale

[Jeremiah Crossett]

Brendan,
I suppose there is a trade off between the options of all buildings in one
file and individual models.
The all buildings in one file option treats other buildings as shading
objects in E+ and as wind shields & shading in design builder, but does not
allow for the use of zone multipliers.

The individual model option allows for zone multipliers and this means
shorter simulation run time.

So I guess it depends on your use; if you want fast run time, single models
are best but if you want to model the geographical features more accurately
than multi model would be best.  If you set the project up in DB, then
export to E+ than the other models will be shading objects, for existing
buildings this is what I like to do.
The logic is that for existing buildings the owners are likely to make
changes to individual zones, so use of zone multipliers may not provide
useful info.

hope this helps and best of regards-
*
*
*
*
*Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions*
*
120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951
www.phasechange.com
*

*
*
*
*



On Fri, Feb 1, 2013 at 12:31 PM, Hall, Brendan <BHall at karpinskieng.com>wrote:

>  Jeremiah,****
>
> ** **
>
> How has simulating more than one building at once in designbuilder worked
> out for you? How easy is it to combine and separate the building results?
> Any other quirks that you ran across? I have a campus project where I need
> to simulate several buildings and I am trying to decide whether to try and
> do them in the same file. Thanks.****
>
> ** **
>
> ** **
>
> Brendan Hall,  PE, LEED AP BD+C****
>
> Engineer, Mechanical****
>
> karpinski
> ENGINEERING****
>
> 3135 Euclid Avenue
> Cleveland, OH  44115
> *P*  216.391.3700 x 3111****
>
> *E** * *bhall at karpinskieng.com*
> *W* *www.**karpinskieng.com <http://www.karpinskieng.com/>*****
>
> ** **
>
> ** **
>
> ** **
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Jeremiah Crossett
> *Sent:* Monday, December 17, 2012 12:23 PM
> *To:* David GARCIA-SANCHEZ
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] multi-energy simulation at neighbourhood scale**
> **
>
> ** **
>
> I have found Design Builder as an interface to Energy Plus to work well
> for cityscape models.  For instance the model image pasted into this email
> is for two buildings owned by the same owner so I made both models in the
> same file. Also the micro climate factors of solar shading from the city
> scape and can be modeled in Design Builder/E+, and Design Builder CFD can
> be used to model site wind factors. ****
>
> ** **
>
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