[EnergyPlus_Support] Re: Ventilated Facade With Internal Shading

["dan_grunbaum" <dan_grunbaum@xxxxxxxxx>]

Thanks Rob,

I have used the "Window Heat Gain" variable and then subtracted the 
conduction gain (determined from difference between external and 
internal surface temps of window) from the result to get the solar 
heat gain only. When I compare the two cases where the cavity is 
ventilated and non-ventilated the solar heat gain is greater for the 
ventilated case when solar is on the facade. Does this seem right? 

Regards,

Dan



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Rob Hitchcock 
<RJHitchcock@...> wrote:
>
> Look under "Window Output Variables" in the I/O Ref for the 
definition 
> of "heat flow" under "Window Heat Gain" to see if that better fits 
your 
> needs.
> 
> Rob
> ========
> dan_grunbaum wrote:
> 
> > Hi,
> >
> > I am attempting to model a ventilated facade with an internal 
blind. I
> > am modelling the the facade cavity as a seperate zone and have an
> > internal blind on the outer glass. I am using EnergyPlus to try to
> > generate a SHGC for the blind which takes into account both 
shortwave
> > and longwave radiation.
> >
> > The variables available to be reported appear only to take into 
account
> > shortwave radiation. Therefore I am thinking that the only way to
> > determine the SHGC for the blind is via the difference in space 
loads
> > with and without the blind and ensuring that the space is light 
weight
> > so that loads are instantaneous. Is there any other way i.e. is 
there a
> > report variable which gives the longwave radiant component 
transmitted
> > through a window taking into account any changes in temperature 
of the
> > blind as the facade is ventilated?
> >
> > Regards,
> >
> > Dan
> >
> >  
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>



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