[esp-r] Re: Insolation through other zones

[Geissler Achim]

Hi Heiko,
for current architecture, that is probably one of the most limiting features
of ESP-r: Direct radiation is followed through one transparent layer, only!
For subsequent zones, the radiation is diffuse.
As far as I am aware, using Radiance does not help, because radiance looks
at light, only.
One workaround is to tell ESP-r to distribute the incoming radiation to two
main surfaces (somewhere in the construction menue branch). However, that
has the limitation that the distribution chosen can not be changed during
simulation. 
Another idea is maybe to check what angles of incidence occur and maybe
expand the uppermost zone of the atrium so that most direct radiation is
taken care of in it.
For what its worth ...
Regards,
Achim



> -----Original Message-----
> From: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-
> bounces at lists.strath.ac.uk] On Behalf Of esp-r at heikowoehrle.de
> Sent: Saturday, December 09, 2006 10:25 AM
> To: ESP-r mailing list
> Subject: [esp-r] Insolation through other zones
> 
> Hello outthere,
> 
> is there a way of getting direct radiation from another zone? i'm
> modelling a
> atrium at the moment with five zones stacked over each other, with
> fictious
> surfaces between them.
> 
> With the normal calculation it looks like only the top zone gets the
> radiation
> from the glas roof, the other zones only get a diffuse radiation from the
> top
> zone.
> 
> This may be appropirate for vertical glazings but with a horizontal
> glazing the
> ground zone should receive nearly all radiation on a summer midday.
> 
> Is there any solution via the ish-module oder by calculating the
> daylight-factor? I was playing aorund with ish a bit but it looks like it
> works
> only for single zones with a transparent surface to external an not with
> transparent/fictious surfaces to other zones.
> 
> thanks in advance
> 
> Heiko Woehrle
> 
> 
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