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<DIV dir=ltr align=left><SPAN class=984083416-14112008><FONT face=Arial
color=#0000ff size=2>Andreas,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=984083416-14112008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=984083416-14112008><FONT face=Arial
color=#0000ff size=2>Try changing your walls, roof, and floor to a "resistance
only" construction, with a U-value equal to the mass wall construction. This
will eliminate mass storage effects, and then if your heating demands
match, then you know it's the mass.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=984083416-14112008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=984083416-14112008><FONT face=Arial
color=#0000ff size=2>-Cramer</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=984083416-14112008>
<DIV align=left>
<P style="MARGIN: 0cm 0cm 0pt" align=left><B><FONT face=Arial size=1><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: Arial">J. Cramer
Silkworth</SPAN></FONT></B><o:p></o:p></P>
<P style="MARGIN: 0cm 0cm 0pt"><B><FONT face=Arial size=1><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: Arial">Transsolar Climate
Engineering</SPAN></FONT></B><B><FONT size=1><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 8pt"><o:p></o:p></SPAN></FONT></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial">Technical consulting for energy
efficiency and environmental quality in buildings.</SPAN></FONT><FONT
size=1><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></FONT></P>
<P style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial">145 Hudson
Street</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial">Suite 402</SPAN></FONT><FONT
size=1><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></FONT></P>
<P style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial">New York, NY 10013</SPAN></FONT><FONT
size=1><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></FONT></P>
<P style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial">Office: 212-219-2255</SPAN></FONT></P>
<P style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial"><A
title=mailto:silkworth@transsolar.com
href="mailto:silkworth@transsolar.com">silkworth@transsolar.com</A></SPAN></FONT></P></DIV></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> andreas thewes
[mailto:andreas.thewes@uni.lu] <BR><B>Sent:</B> Tuesday, November 11, 2008 4:43
AM<BR><B>To:</B> trnsys-users@engr.wisc.edu<BR><B>Subject:</B> [TRNSYS-users]
Qheat - calculation<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal>Dear all,<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><SPAN lang=EN-US>I need your help.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>I have simulated with TRNSYS a small
quadratic office building.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>One of my Outputs in TRNSYS is the heat
demand (Qheat).<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Can someone explain me, how TRNSYS calculate
the heat demand (Qheat) ?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>If I calculate the heat demand with a
“static calculation tool” or per hand, then I have a difference of 40 percent to
the dynamic result of TRNSYS.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Are only the dynamic effects (e.g. storage
capacity) the reasons? And are 40 - 60 percent realistic<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Thank you for your
answers.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Best regards<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Andreas<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">___________________________________</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'"> <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Université du
Luxembourg<BR>Faculté des Sciences, de la Technologie et de la
Communication<BR><BR>Dipl-Ing. Andreas Thewes, assistant<BR></SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial Narrow','sans-serif'"><BR></SPAN><SPAN
lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Email:
</SPAN><SPAN lang=EN-US
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Arial Narrow','sans-serif'"><A
href="mailto:andreas.thewes@uni.lu"><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Arial','sans-serif'">andreas.thewes@uni.lu</SPAN></A></SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial Narrow','sans-serif'"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">URL :
</SPAN><SPAN lang=EN-US
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'"><A
title=http://www.uni.lu/ href="blocked::http://www.uni.lu/"><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Arial','sans-serif'">http://www.uni.lu</SPAN></A></SPAN><SPAN
lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial Narrow','sans-serif'">
</SPAN><SPAN lang=EN-US
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
lang=EN-US><o:p> </o:p></SPAN></P></DIV></BODY></HTML>