Re: [EnergyPlus_Support] Illuminance values - illuminance map

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

Check the coordinates for the illuminance map, noting that all daylighting 
coordinates are relative to the zone origin (even if WorldCoordinates is 
specified for geometry.)

EnergyPlus can model external reflectances, but this feature is off by default. 
 See BUILDING "Solar Distribution", and Shading Surface Reflectance.

Mike


On 1 Dec 2006 at 17:14, greici_ramos wrote:

> 
> Dear all,
> 
> I'm trying to work with the illuminance map, on a model with white 
> walls and ceiling. But the values are too high, even when there isn't 
> direct sunlight.  For example, on the  end of the day, at the back of 
> the room, which has 5m, there's values higher than 800lx. 
> - Weather file used: florianopolis.epw
> 
> What could be the problem?  
> 
> And another doubt: Does the program consider external reflectances? 
> For example, the reflected light at a near building?
> 
> Thanks,
> 
> Greici Ramos
> 
> 
> 
> 
> 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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