Re: [EnergyPlus_Support] Suggestion for glare index reporting

["Michael J. Witte" <mjwitte@xxxxxxxx>]

You can report maximum glare index using REPORT:TABLE:MONTHLY.

You can also use REPORT:TABLE:TIMEBINS to determine the number of hours the 
glare index was not met.  Set the upper limit of the bin range to equal the 
glare index setpoint, and then the last column will report the number of hours 
greater than that value.

Assuming your shading devices can completely cover the window, there should not 
be any hours where the glare index was not met.  If I understand the control 
algorithm correctly, it first checks for glare levels, then deploys shades as 
needed, then simluates for that timestep.  So, the only times the glare index 
limit would not be met would be if the shades cannot fully close (in the case 
of blinds) or the shades are not dark enough or do not cover all windows.

Mike


On 5 Feb 2007 at 16:13, carlosochoam wrote:

> Hi!
> 
> I have been simulating the influence of dynamic shading devices on 
> overall electrical consumption, using monthly data reporting. 
> 
> As might have been expected, when using the control "shading device on 
> if high glare", the electrical consumption for lighting rose. But the 
> reported DGI's are averaged, so absolute numbers are well below the 
> index that triggered the control.
> 
> Therefore, as a suggestion, would it be possible to include a reporting 
> variable that indicates when daylight glare index was not met, as well 
> as the maximum glare index?
> 
> Thanks,
> 
> Carlos
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the "search" button.
>  
> Yahoo! Groups Links
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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