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<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=643235506-14122009>Adhi,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=643235506-14122009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=643235506-14122009>if you
have set the boundary conditions according to VDI 6020 correctly - which means
adiabatic for inner surfaces and a constant temperature of 22 degree at the
outside of your external wall - then you can recognize, that the ambient
conditions (say weather data) do not play any role !!!</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=643235506-14122009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=643235506-14122009>Moreover the great difference between VDI 6020 and your
results with ESP - especially at the beginning of the simulation period - is
caused by a different default value of temperatures in your test room. ESP uses
a default value of 15 degree (at the start of the simulations), whereas VDI 6020
uses a default temperature of 22 degree. </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=643235506-14122009>I am
not sure, whether this default value (temperature start value) can be changed in
ESP ....</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=643235506-14122009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=643235506-14122009>Hope
this helps,</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=643235506-14122009>Gunter</SPAN></FONT><FONT face=Arial color=#0000ff
size=2><SPAN class=643235506-14122009><FONT size=2><BR><BR>--<BR>Dr. Gunter
Pültz<BR><BR>Müller-BBM GmbH<BR>Robert-Koch-Straße 11<BR>82152
Planegg<BR>Telefon +49(89)85602-336<BR>Telefax +49(89)85602-111<BR>E-Mail
Gunter.Pueltz@MuellerBBM.de<BR><A href="http://www.muellerbbm.de/"
target=_blank>http://www.MuellerBBM.de</A><BR><BR>HRB München
86143<BR>Geschäftsführer: Bernd Grözinger, Dr. Edwin Schorer, Norbert
Suritsch</FONT> </DIV></SPAN></FONT>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
esp-r-bounces@lists.strath.ac.uk
[mailto:esp-r-bounces@lists.strath.ac.uk]<B>On Behalf Of
</B>AdhiSüß<BR><B>Sent:</B> Thursday, December 10, 2009 4:03 PM<BR><B>To:</B>
ESP-r<BR><B>Subject:</B> [esp-r] simulating VDI 6020<BR><BR></FONT></DIV>
<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: arial,helvetica,sans-serif">
<DIV>Hello,<BR>I did simulation VDI 6020 (Example 1) with ESP-r. It is not
clear what weather data is used in that test. My friend said, it is TRY for
Wuerzburg (weather region 5). I built the model and used this weather data,
but the results are different. Same trend but not close (see VDI6020.jpg). My
question is: is that the correct weather data for VDI 6020 test? if yes, why
is so much different between VDI's results and ESP-r's results? I have checked
construction and schedule of my model are according to VDI 6020 (Example 1).
Thank you for your help.<BR><BR>regards<BR>Adhi<BR></DIV><!-- cg4.c2.mail.ac4.yahoo.com compressed/chunked Fri Dec 4 00:57:13 PST 2009 --></DIV><BR>
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