[Bldg-sim] Day Schedule TYPES

[Eleanor Lee]

It depends on what product you're trying to represent or, if custom to 
the job, what your control specifications are.  Automated shades can be 
triggered based on depth of sun penetration, interior illuminance, 
discomfort glare, lack of urban shadows, etc (see example specifications 
for a fairly sophisticated automated roller shade system at:
http://windows.lbl.gov/comm_perf/pdf/NYT_RShades-Spec12-31-04.pdf

Assuming that eQuest's interior shade models do not deviate from DOE-2's 
algorithms, the interior shade model is fairly simplistic: it is either 
fully up or fully down depending on trigger values for transmitted solar 
radiation, discomfort glare, etc.  Historically, we've used 30 Btu/h-ft2 
for transmitted direct (beam) solar radiation.  Best to run parametrics 
to better understand impacts of trigger values on PPD and discomfort 
glare.  See DOE-2 reference manual 2.1E Loads documentation on window 
shading management. 

Eleanor Lee

Windows & Daylighting Group
Lawrence Berkeley National Laboratory


On 2/4/2008 9:58 AM, Lam, Linda wrote:
>
> Thanks for the help on Schedule types.
>
>  
>
> Does anyone know the best way to represent interior motorized 
> shading?  I believe the appropriate Schedule type would be 
> "Radiation."  However, does anyone know the amount of radiation at 
> which point shading would be necessary?
>
>  
>
> Thanks!
>
>  
>
> *Linda Lam*
> *FLACK **+** KURTZ*
> 405 Howard St. San Francisco, CA 94105
> Direct:  (415) 402-5813
> Email:  linda.lam at sf.fk.com <mailto:linda.lam at sf.fk.com> 
>
> ------------------------------------------------------------------------
>
> *From:* bldg-sim-bounces at lists.onebuilding.org 
> [mailto:bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Lam, Linda
> *Sent:* Friday, February 01, 2008 1:06 PM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Day Schedule TYPES
>
>  
>
> To All
>
>  
>
> Is there any documentation on Day Schedule types in eQuest?
>
>  
>
> I'm trying to set up interior motorized shading, which seems to 
> require an assigned schedule.  However, I do not know which schedule 
> type should be used to control it.  (By schedule type I mean the 
> "Type" pull-down menu under the Day Schedules tab---On/Off, Fraction, 
> Multiplier, etc.
>
>  
>
> If there is no documentation, any experience with any of the types 
> would be helpful.
>
>  
>
> Thanks!!
>
>  
>
> *Linda Lam***
>
> * **FLACK** **+** **KURTZ*
>
> 405 Howard St.
>
> Suite 500
>
> San Francisco, CA 94105
>
> _http://www.flackandkurtz.com <http://www.flackandkurtz.com/>_  
>
> 	
>
> 415.398.3833 *Main***
>
> 415.402.5813 *Direct*
>
> 415.433.5311 *Fax
> *linda.lam at sf.fk.com <mailto:linda.lam at sf.fk.com>
>
> */Ensuring that today's built environment preserves the natural 
> environment in which we live./*
>
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