[EnergyPlus_Support] Re: Energyplus interior windows solar gain output reporting bug

["aymericnovel" <nanabush@xxxxxxxxxx>]

You mean for the zone level output?

Well, my suspicions came from the fact that I was first using DesignBuilder to model a DSF and that the reported solar gains through interior windows were really low compared to the cooling loads and a "equivalent SHGC" simple skin curtain wall to see the advantage of DSF.
Then the DesignBuilder support told me they are using the zone variable level to display these solar gains. I checked and it was right so I deduced that the problem did not come from DesignBuilder but directly from the variable they were using. That's true I did not assume they were using average instead of sum...

I'll check that.

Thank you,
Aymeric

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> wrote:
>
> Did you report this to the helpdesk?
> 
> There are two flavors of those output variables -- make sure you're
> reporting the sum and not the average one.
> 
> 
> On Tue, 12 Jul 2011 01:50:06 -0000, "aymericnovel" <nanabush@...>
> wrote:
> > Dear all,
> > 
> > It has been a little while I posted an enquiry about a problem I saw in
> > solar gains reporting for interior windows.
> > 
> > 1) If one goes at surface level output (Beam solar through Interior
> Window
> > and Initially Transmitted Diffuse...) the amount of solar gains is
> correct
> > and consistent with calculated sensible cooling loads.
> > 
> > 2) BUT if one uses the zone level output (Zone Beam/Diffuse Solar
> Through
> > Interior Window) to report the sum of the surfaces outputs, then it
> doesn't
> > correspond and is largely underestimated.
> > 
> > Did anyone ever notice this?
> > 
> > BR,
> > Aymeric
> > 
> > 
> >
>




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