Re: [EnergyPlus_Support] illuminance map

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

My apologies for the delayed response.

It is hard to say what might be wrong.  Try placing the two daylighting 
reference points in positions which match some of the illuminance map grid 
points and compare the reported illuminances.  I am not sure that the 
coordinates for illuminance maps follow the same rules as the daylighting 
reference points.  I have to check on that.

Mike

On 10 Jan 2006 at 10:59, Rejane Loura wrote:

> Hello Mike,
>    
>   You was right, it was problems with geometry. But I have other question. I´ve done a illuminance map with 9 points and 6 and I´ve checked these and the reference points coordinates. They are ok (relative to the origin of the zone). But the illuminance map shows 6 equals values in all simulated hours? What can be happen?
>   Thank you
>   Rejane
>    
>   Message: 4 
> Date: Mon, 9 Jan 2006 09:45:08 -0600
> From: "Michael J. Witte" 
> Subject: Re: Daylighting detailed
> 
> It sounds like a geometry problem. Are you using Relative or World 
> Coordinates? It sounds like some surfaces may be facing opposite of what they 
> should be. Use "Report, Surfaces, Details;" to generate a list of all surfaces 
> and subsurfaces which includes tilt and azimuth. This report is placed in the 
> eio output file. Opening the file in Excel (using comma delimiters) makes it 
> most easy to read. Check that all surfaces are facing in the desired direction.
> 
> Note that the coordinates for daylighting reference points are all relative to 
> the zone origin (regardless of the choice of relative or world coordinates for 
> surfacess).
> 
> Mike
> 
> 
> On 6 Jan 2006, at 17:23, Rejane Loura wrote:
> 
> > Hello,
> > I'm doing simulations in EnergyPlus with the Daylighting: detailed. I've chose
> > a real room. It is a Lab in the research centre. The room has 7 windows: 4 in
> > facade north and 3 in south. The area of the zone is 56 m². I've created a
> > illuminance map with 9 points and I´ve chose two reference points in the zone.
> > And I've been doing simulations with this points in different places but in
> > all of them I've found 6 equals values. And they are in the same places in all
> > simulations. And I've had another problem, the results is showing beam
> > radiation into the room between 10 and 12 but, indeed, the room has beam
> > radiation in the afternoon (12 until 17). I've checked all of the input like
> > latitude, north axis and everything is ok. So, I woudl like to know what can
> > cause these problems? Thank You Rejane
> > 
> 
> 		
> ---------------------------------
>  Yahoo! doce lar. Faça do Yahoo! sua homepage.
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> 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





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

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/