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<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>Dear
Hilde,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>the
entries that you make in TRNBUILD for an internal shading are the following
where the bol<SPAN class=625405310-13012005>d parameters are the keywords
used in the bui file:</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005><SPAN
class=625405310-13012005></SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005><STRONG>reflishade</STRONG>=the reflection towards a
window of the internal shading device - this is the material
property - the reflectivity of the opaque material</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005><STRONG>refloshade</STRONG>=the reflection
towards the zone (backside of the shading) - this is the material
property - the reflectivity of the opaque material</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005><STRONG>Ishade</STRONG>=(1-Transmission)= opaque part
of the window. <SPAN class=625405310-13012005>Please not that your data set
includes transmission for one special position of the
device.</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005><SPAN
class=625405310-13012005><STRONG>Ishade </STRONG>is</SPAN> an
input because the transmission changes depending on the position of
the shading device (closed/open)<STRONG>.</STRONG></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005><STRONG>CCISHADE</STRONG>=The part of the absorbed
radiation on the internal shading that is transferred directly to the air node
of the zone by convection.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005><STRONG>RISHADE</STRONG>= additional heat resistance of
the internal shading device.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>You
will find an example for the calculation on page 49 of
06-MultizoneBuilding.pdf in TRNSYS16.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>TRNSYS
only needs the reflection of the opaque part = <SPAN
class=625405310-13012005><STRONG>reflishade = (Reflection Coefficient of the
shading device)/(1-Transmission data) </STRONG></SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005><SPAN
class=625405310-13012005></SPAN>(this is e. g the reflectivity of the
colour white or grey),</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>The
advantage is that the reflectivity of the opaque part doesn't change when
you open or close the shading.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>Iref,z
and I?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>We
will add that to the manual:</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005><SPAN
class=625405310-13012005>Iref,z ..... is the radiation coming from the zone due
to reflection on walls or different windows hitting the backside <STRONG>(<SPAN
class=625405310-13012005>refloshade)</SPAN></STRONG> of the internal
shading</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005><SPAN
class=625405310-13012005>I ..... is the external radiation after the external
shading hitting window and then the front side <STRONG>(</STRONG><SPAN
class=625405310-13012005><STRONG>reflishade) </STRONG>of the internal
shading<STRONG>.</STRONG></SPAN></SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005><STRONG>internal shading
factor.</STRONG></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>Due to
the <SPAN class=625405310-13012005>internal shading factor</SPAN> is
depending on the glazing, the resistances between the panes and towards the zone
which are it self</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005>temperature depending, it can not be an input.
</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>Since
TRNSYS16 the internal shading factor is an output of Balance 3 - solar
balance for a window . </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>This
balance was not possible with TRNSYS15 because you have to look only at the
solar radiation coming through the window </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>in
front of the internal shading. So for this balance in TRNSYS16 all radiation
from other windows or reflected by the zone (<SPAN
class=625405310-13012005><SPAN class=625405310-13012005>Iref,z) is
excluded.</SPAN></SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT><FONT face=Arial color=#0000ff
size=2><SPAN class=625405310-13012005></SPAN></FONT><FONT face=Arial
color=#0000ff size=2><SPAN class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625405310-13012005>best
regards</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005>Torsten Welfoner</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625405310-13012005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=de dir=ltr align=left><FONT face=Tahoma
size=2>-----Ursprüngliche Nachricht-----<BR><B>Von:</B>
trnsys-users-bounces@engr.wisc.edu [mailto:trnsys-users-bounces@engr.wisc.edu]
<B>Im Auftrag von </B>Hilde Breesch<BR><B>Gesendet:</B> Dienstag, 11. Januar
2005 13:34<BR><B>An:</B> TRNSYS users<BR><B>Betreff:</B> [TRNSYS-users]
internal shading Type56<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Dear Trnsys users,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have some problems to implement in Trnsys Type
56 with Prebid/Trnbuild an internal shading device with known data of
transmission, reflection and absorption coefficients. I also have calculated
the g-value of the whole system (glass + shading). I don't understand how
these data correspond to the input data in Prebid/Trnbuild:</FONT></DIV>
<DIV><FONT face=Arial size=2>- internal shading factor: I have estimated this
by 1 - (g glass + sunblinds)/(g glass)</FONT></DIV>
<DIV><FONT face=Arial size=2>- reflection coefficient of internal device: is
this the real reflection coefficient of the sunblinds of corresponds this to
REFLISHADE (as explained in the manual of Prebid/Trnbuild)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I also don't understand the equation 4.8.8.1.44
in the Trnsys15 manual or (44) in Trnsys16 - Trnbuild manual that explains the
irradiation that is transmitted trough a window with an internal shading. Some
parameters in this equation aren't explained. Where e.g. can you give a value
to the 'solar transmittance of all window panes'? What is the difference
between Iref,z and I?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>best regards,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Hilde Breesch<BR>PhD student Buildings &
Climatic Control<BR>Department of Architecture & Urban Planning<BR>Ghent
University<BR>J. Plateaustraat 22, B-9000 GENT<BR>tel. +32 9 264 78 61
fax. +32 9 264 41 85<BR>e-mail: <A
href="mailto:Hilde.Breesch@UGent.be">Hilde.Breesch@UGent.be</A><BR><A
href="http://allserv.ugent.be/~hbreesch/research">http://allserv.ugent.be/~hbreesch/research</A><BR></FONT></DIV></BLOCKQUOTE></BODY></HTML>