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Re: [EnergyPlus_Support] Output variables
My apologies for the delayed response.
When I report WINDOW HEAT GAIN (or LOSS) in a simulation with interior windows,
these variables are not reported at all. Check the outside environment inputs
for these windows and their base surfaces. They base surface should be
OutsideFaceEnvironment=OtherZoneSurface and OutsideFaceEnvironment
Object=surface name in adjacent zone. For the window suburface,
OutsideFaceEnvironment Object must be the adjacent window subsurface name. To
estimate the heat gains of these windows, you can report the inside and outside
surface temperatures, Zone Beam Solar from Interior Windows, and Zone Diff
Solar from Interior Windows. I have posted a suggestion to see if the full set
of window report variables can be made available for interior windows. They
are intentionally not reported for interior windows in the source code, but I
do not know the reason why.
Mike
On 21 Oct 2005, at 16:56, Clarice Bleil de Souza wrote:
> Hi Linda,
>
> Thanks a lot for the reply.
> I really wish I could plot the breakdowns for the window heat gains and losses.
> ... I'll have a look at the new version later and see if it is possible.
>
> Meanwhile I'm intrigued with something here.I'm modelling a multiple zone model
> with an internal zone which is mainly composed of internal windows that do not
> open. I wanted to plot the breakdowns for that windows but as I cannot I would
> be happy to see the window heat gains and losses. The problem is when I run the
> simulation these window heat gains and losses are all zero.
>
> I'm running a free run simulation for a 3 weeks period with minimum shading. I
> know there's no window transmitted solar component but there should be
> convective heat flow, net IR heat flow and conduction . But all I get is a zero
> value all the time for these 2 variables (window heat gains, window heat
> losses). Why is this happenning? Shouldn't I be able to see the other
> components?
>
> I've plotted the same results for ESP-r and the balance between the IR,
> conduction and convective gains is different from zero, so I assume that this
> results shouldn't be null. I've also checked the idf file and I am sure the
> windows are set as "no sun" and "no win" and they are also considered adjacent
> to windows identical to them that belong to the adjacent zones. So I suppose
> they are modelled correctly. Do you think this might me a modelling problem?
> Something else that I didn't check, probably? I'm quite puzzled about that, can
> you please give me a light about it?
>
> I thank you very much again for your help.
>
> Best regards,
>
> Clarice
>
>
> There were a number of variables added in V1.2.3 release, but by and
> large, you can only report the variables in the RDD for your
> simulation. (Also, look at or enter "Diagnostics,
> DisplayAdvancedReportVariables;)
>
> This command opens up a few more variables but you need to understand
> what they do, -- hence they are "advanced".
>
>
> Linda
>
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
EnergyPlus-Support@xxxxxxxx
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