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[EnergyPlus_Support] Sunlit area too small (SHADOW) at 0:00

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Sunlit area too small (SHADOW) at 0:00
From: mby <bojic@xxxxxxxxx>
Date: Sat, 14 Aug 2004 01:51:47 -0700 (PDT)
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Dear all,
Can you inform me of a procedure to get rid of severe
error:
   ** Severe  ** Sunlit area too small (SHADOW)
   **   ~~~   ** at time=00:00, for surface=BR-EX-W20
   ** Severe  ** Sunlit area too small (SHADOW)
   **   ~~~   ** at time=00:00, for
surface=KRT-EX1-W-SG-RIGHT
It is unclear that this error is reported at
time=00:00 when there is no sun at all.
Do I have to take care of this severe error message at
all?
Best regards
Bojic


--- "Michael J. Witte" <mjwitte@xxxxxxxx> wrote:

> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: "Michael J. Witte" <mjwitte@xxxxxxxx>
> Date: Mon, 9 Aug 2004 12:47:16 -0500
> Subject: Re: [EnergyPlus_Support] a room facing
> North or South- additional
> 
> > these informations will overide the information
> given
> > the weather file.
> 
> On the contrary, whenever a RUN PERIOD is used, the
> location data in the 
> weather file overrides the LOCATION data in the idf
> file for all simulations, 
> including DESIGNDAY(s).
> 
> To verify the location data used in any simulation,
> check the eio output file.  
> Search for "Location".
> 
> If you find that the location data is correct and
> you are still unable to 
> explain your results, please submit both idf files
> and the epw file to the 
> files area in the yahoo group or send as a zipped
> attachment to energyplus-
> support@xxxxxxxx
> 
> Mike
> 
> 
> On 4 Aug 2004, at 4:12, teklay Weldeabzgi wrote:
> 
> > Bojic
> > i hope you write the all informations under the
> > Location in your idf file. you can see any example
> > file in the documentation. these are the latitude,
> > longitud, time zone, elevation. hence these
> > information will locate where your buildind
> locates.
> > and note that the latitude is positive if the
> building
> > is in the norther hemispher, negative if it is in
> > southern. and longitud is positive if your
> location is
> > east of Greenwhich meridian negative if it is west
> of
> > meridian. the time zone will be GMT+ your lacal
> time.
> > these informations will overide the information
> given
> > the weather file.
> > hope this will help
> > you
> > --- mby <bojic@xxxxxxxxx> wrote:
> > 
> > > Dear all,
> > > I see that there is no any answer to my
> question.
> > > Maybe I have to give some additional details:
> > > 1. Simulation is for north hemisphere meaning
> Hong
> > > Kong,
> > > 2. I am suspicious to my weather file, because
> it is
> > > "hand-made". I do not understand how the program
> > > determines if the building is at the south or
> north
> > > hemisphere. I assume that it may be done either
> by
> > > weather file or by location data in idf file. 
> > > Regards
> > > Bojic  
> > >  
> > > --- mby <bojic@xxxxxxxxx> wrote:
> > > 
> > > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> > > > From: mby <bojic@xxxxxxxxx>
> > > > Date: Sun, 1 Aug 2004 02:20:56 -0700 (PDT)
> > > > Subject: [EnergyPlus_Support] a room facing
> North
> > > or
> > > > South
> > > > 
> > > > Dear all,
> > > > 
> > > > My emerging problem is that I obtain that the
> room
> > > > facing north consumes more electricity for
> cooling
> > > > than that room facing south. Different facing
> is
> > > > obtained when the surface geometry key (in
> surface
> > > > geometry) is changed from absolute to relative
> 
> > > and
> > > > then degree in North axes (in location)
> changed to
> > > > be
> > > > either 0 or 180. When I inspect my dxf file
> with
> > > > architectural desktop, I obtain the expected
> > > > direction
> > > > of my building (room) (either north or south).
> > > > I am puzzled if the problem is in my
> > > interpretation
> > > > of
> > > > geometry or else. 
> > > > 
> > > > Bojic  
> > > > 
> > > > 
> > > > 		
> > > > __________________________________
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>
========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support      
> EnergyPlus-Support@xxxxxxxx
> 
> 
> 



		
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