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Tiziano,
there
are some important points on simulation of a double
facade:
- make
sure that you have defined the transparent surface between the zones as an
adjacent window.
- make
reasonable use of the geosurf factor which often is close to 1 if there are
big glazing areas.
- note
that there is a known issue with the distribution of the diffuse solar radiation
to the different surfaces of a zone which is area*absorbtion weighted and thus
overestimates solar radiation which is transfered from your gap
zone back outside. You should check this (NTYPE73) and if it is
too high, give it (partly) back to your zones as a gain. (This issue
will be solved in TRNSYS17)
-
Make use of the solar balance (NTYPE 901) to check your
results.
I hope
this helps.
With kind
regards TRANSSOLAR Software
Team http://www.trnsys.de/ Transsolar KlimaEngineering - Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäuden Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart / Amtsgericht Stuttgart - HRB 23347 / USt-IdNr.: 99073/00911 Geschäftsführer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst Von: Tiziano Terlizzese [mailto:tiziano.terlizzese@mail.ing.unibo.it] Gesendet: Donnerstag, 8. Januar 2009 09:22 An: TRNSYS-users@cae.wisc.edu Betreff: [TRNSYS-users] Double skin facade Hi
all, I?m trying to simulate
a double skin facade building. As first step I considered a single office with
all the inner walls adiabatic and I divided my model into two zones: the office
and the gap between the two panes of the double skin façade. It seems that the
solar radiation doesn?t reach the office: it doesn?t pass through zone 1 (the
gap between the panes) into zone 2, the office as it should be. Is there
something I need to set? I?m a beginner, so I
thank in advance anybody who can give me some advice.
Tiziano
Terlizzese PhD
student Università di
Bologna DIENCA |