Re: [EnergyPlus_Support] Problem with result Surface Ext Solar Incident[W/m2]

[<sbtay_4@xxxxxxxxx>]

Hi Mike,

i did try changing it before but the simulation crush.
Thanks anyway!

Clarence

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

> Regarding the incident solar on the building.  The
> problem is with the 
> "TransSchedShadowSurf" field on the shading
> surfaces.  This schedule is the 
> transmittance of the shading surface, so a value of
> zero is opaque and a value 
> of 1 is transparent.  All of the shading surfaces
> have a schedule of 1.0, so 
> the shading surfaces have no impact.  Change the
> schedule to be 0.0, and you 
> should see the impact of the change in height.
> 
> Mike
> 
> 
> On 14 Aug 2004, at 10:56, Linda Lawrie wrote:
> 
> > At 10:46 AM 8/14/2004, Soon Boon (Clarence) wrote:
> > >The Surface Ext Solar
> > >Incident[W/m2] value came out to be unstable as i
> change the vertex
> > >direction. Meaning my surface geometry is key as
> lower left corner CW
> > >but when i key the vertex of the wall in a wrong
> direction it give me
> > >a different value.
> > 
> > Yes, that is "as designed" -- if the surface is
> facing a different 
> > direction (outward normal of the surface), then
> you will quite likely get a very
> > different result.
> > 
> > 
> > >another problem was even when i got the right
> direction of the
> > >vertex, the value of 2nd floor compare to 13th
> floor the value are
> > >the same, which i think there should be a
> different.
> > 
> > Not sure that this one should be different --
> depends on location, 
> > etc.  Incident angle from the sun (which is a long
> distance away) may make very
> > little difference to a building between stories --
> but we're certainly willing
> > to look at it if you send your input file (to
> linda@xxxxxxxxxx or to
> > energyplus-support@xxxxxxxx)
> > 
> > 
> > Linda
> > 
> > EnergyPlus WebSite: http://www.energyplus.gov
> > Owner: EnergyPlus_Support list
> > Member: EnergyPlus Development Team
> > 
> > 
> > 
> > [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.
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > 
> > 
> 
> 
> 
>
========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support      
> EnergyPlus-Support@xxxxxxxx
> 
> 
> 



		
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