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<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>Bettina,</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>a.)
the Type 56 building model so far is not a geometric model thus geometric
distribution of radiation exchange between walls is by surface
area weightening only.</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>b.)
you cannot define the emissivity</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>c./d.)
thank you for finding this bug in the TRNBuild Interface, we will correct
this for the next update.</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>In the
"Properties" table the correct expressions must be:</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>constant chilled ceiling, if (Tsurfceiling-Tairceiling)
< 0
3.888</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2><SPAN
class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>exponent chilled ceiling, if
(Tsurfceiling-Tairceiling) <
0
0.31</FONT></SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>and</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>constant heated ceiling, if
(Tsurfceiling-Tairceiling) >
0 7.2</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2><SPAN
class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>exponent heated ceiling, if
(Tsurfceiling-Tairceiling) >
0
0.31</FONT></SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2><SPAN
class=206370207-18062007></SPAN></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2><SPAN
class=206370207-18062007>The unit of the resulting alfa_conv is kJ/(h*m^2*K). So
of course the constant has to have another unit which however includes K to the
power of the exponent. What we wanted to make clear is that the constant has to
be a value which includes the capacity given in TRNSYS units
(kJ/h) We will have t think of how to explain this better in
TRNBuild.</SPAN></FONT></SPAN></DIV></FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>e.)
yes</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>f.)</FONT></SPAN><SPAN class=206370207-18062007> <FONT face=Arial
color=#0000ff size=2>the sign of Qcomo and Qcomi is giving the direction of the
heat flow:</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>
<P align=left>QCOMI combined heat flux to inside (going into zone+; going into
wall -)</P>
<P align=left>QCOMO combined heat flux to outside (going to outside-; going into
wall +)</P></FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff size=2>I hope
this can help.</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2>Monika</FONT></SPAN></DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=206370207-18062007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=de dir=ltr align=left><FONT face=Tahoma
size=2>-----Urspr¨¹ngliche Nachricht-----<BR><B>Von:</B> Bettina Nocke
[mailto:bettina@dream.unipa.it] <SPAN class=206370207-18062007><FONT
face=Arial color=#0000ff> </FONT></SPAN><BR><B>Gesendet:</B>
Donnerstag, 14. Juni 2007 10:41<BR><B>An:</B>
trnsys-users@engr.wisc.edu<BR><B>Betreff:</B> [TRNSYS-users] I: TYPE 56 -
chilled ceiling<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
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
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Da:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Bettina
Nocke [mailto:bettina@dream.unipa.it] <BR><B><SPAN
style="FONT-WEIGHT: bold">Inviato:</SPAN></B> mercoled¨¬ 13 giugno 2007
20.08<BR><B><SPAN style="FONT-WEIGHT: bold">A:</SPAN></B>
'trnsys-users@engr.wisc.edu'<BR><B><SPAN
style="FONT-WEIGHT: bold">Oggetto:</SPAN></B> TYPE 56 - chilled
ceiling</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Dear TRNSYS
User¡¯s,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; 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"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">using the Integrated Model for
Chilled Ceiling Panels I¡¯m not able to resolve some problems. My questions
are:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">a) if I define only internal walls
(test room for cooling panels), how let I know the model the geometrics of the
room (perpendicular walls etc.)? <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">b) can I define the emissivity of
the internal surfaces? (prEN 14240 stipulates an emission rate at least
0.9)<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">c) the coefficients const and exp
(Properties) are done for the condition Tsurfceiling ¨C Tairceiling < 0. but
so I have to apply the exponent for a negative value. It means only the
amount, without sign? ¨C <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">d) For calculate ¦Á<SUB>conv</SUB>
with equation 6.3.2-157, the constant is done in KJ/m^2K, but multiplying with
delta T, remains KJ/m^2. I¡¯m not sure if I understand rightly the units, so I
have a problem to change the default values (for achieve in the simulatione
the same results as the test of radiant panels). <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">e) is the same model suited to be
used for a heating ceiling? The results of my simulation seems a little bit
strange¡<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; 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">I want to add another
question at the mail of yesterday:<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">In the energy balance
output, in the cooling case, gains (SQCSURF) AND energy flows to other
surfaces (QCOMO, QCOMI) have a negative value. This is a little bit confusing
for me, for understand the convective and the radiative part of energy changes
(setting identical all boundary temperatures).<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"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Can anybody help me? Thanks very
much.<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 size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Bettina<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>