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<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=581180015-08012009>Tiziano,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=581180015-08012009>there
are some important points on simulation of a double
facade:</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=581180015-08012009>- make
sure that you have defined the transparent surface between the zones as an
adjacent window.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=581180015-08012009>- make
reasonable use of the geosurf factor which often is close to 1 if there are
big glazing areas.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=581180015-08012009>- 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)</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=581180015-08012009>-
Make use of the solar balance (NTYPE 901) to check your
results.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=581180015-08012009>I hope
this helps.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=581180015-08012009></SPAN></FONT><FONT face=Arial color=#0000ff
size=2><SPAN class=581180015-08012009><!-- Converted from text/rtf format -->
<P><SPAN lang=de><FONT face=Arial color=#0000ff size=2>With kind
regards</FONT></SPAN> <BR><SPAN lang=de><FONT face=Arial color=#0000ff
size=2>Monika Schulz</FONT></SPAN> </P>
<P><SPAN lang=de><FONT face=Arial color=#0000ff size=2>TRANSSOLAR Software
Team<BR></FONT><A href="mailto:hotline@transsolar.com"><I><FONT face=Arial
size=2>hotline@transsolar.com</I></FONT></A><I><FONT face=Arial size=2>
</P></I></FONT>
<P><A href="http://www.trnsys.de/"><I><FONT face=Arial
size=2>http://www.trnsys.de/<BR></I></FONT></A><A
href="http://www.transsolar.com/__software/docs/trnsys/trnsys_uebersicht_de.htm"><I><FONT
face=Arial
size=2>http://www.transsolar.com/__software/docs/trnsys/trnsys_uebersicht_de.htm</I></FONT></A></P></SPAN>
<P></P><BR style="FONT-FAMILY: arial"><SPAN
style="FONT: 9px arial; COLOR: rgb(0,0,0)">Transsolar KlimaEngineering -
Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäuden
</SPAN><BR style="FONT-WEIGHT: bold; COLOR: rgb(0,153,0)"><SPAN
style="FONT: 9px arial; COLOR: rgb(0,0,0)">Transsolar Energietechnik GmbH,
Curiestrasse 2, 70563 Stuttgart / Amtsgericht Stuttgart - HRB 23347 / USt-IdNr.:
99073/00911 <BR style="FONT-WEIGHT: bold; COLOR: rgb(0,153,0)"><SPAN
style="FONT: 9px arial; COLOR: rgb(0,0,0)">Geschäftsführer: Dipl.Ing. Matthias
Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst </SPAN><BR
style="FONT-WEIGHT: bold; COLOR: rgb(0,153,0)"></SPAN> </SPAN></FONT></DIV><BR>
<DIV class=OutlookMessageHeader lang=de dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>Von:</B> Tiziano Terlizzese
[mailto:tiziano.terlizzese@mail.ing.unibo.it] <BR><B>Gesendet:</B> Donnerstag,
8. Januar 2009 09:22<BR><B>An:</B> TRNSYS-users@cae.wisc.edu<BR><B>Betreff:</B>
[TRNSYS-users] Double skin facade<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hi
all,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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? <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I’m a beginner, so I
thank in advance anybody who can give me some advice.
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Tiziano
Terlizzese<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">PhD
student<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Università di
Bologna<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">DIENCA<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P></DIV></BODY></HTML>