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<p>Asma,</p>
<p> Take a look at the ground floor boundary condition. Depending on
whether you used the building wizard or not, the temperature of
the ground underneath the slab can default to 0C, which often
causes unrealistically high heating loads and unrealistically low
cooling loads.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 11/25/2020 09:52, Asma Sohail via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:AM0PR09MB3826242A74935C8EDEEB7A878FFA0@AM0PR09MB3826.eurprd09.prod.outlook.com">
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<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Hello Christina,</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
thank you for the quick reply. Yes you're right, I'm converting
the Qsens only from kJ/hr to W. I then enter the values in
Excel and divide my total heating load from a zone by the
zone-area. I have a problem especially with the zone 15 and zone
16. These are interior rooms. An elevator and installation shaft
(no heating on) is adjacent to these rooms. The elevator and
installation shaft do not fall below a temperature of 15
degrees, so it's impossible that the zone 15 and zone 16 needs
that much of heating power I get in the simulation. I even
calculated the heat load manually. I don't know why, but I only
get for interior zones a heat load that is way to high. There's
somewhere a problem, maybe it's an easy problem, but I do not
find it. I checked every link and the .b18-file but I do not
find it. I also have to say, it's my first time working with
TRNSYS. Perhaps the problem is in some setting I did wrong.. I
hope really you could help me. Thank you in advance for your
time, effort and help.</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Best regards,</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Asma</div>
<div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>Von:</b>
Sohail, Asma <a class="moz-txt-link-rfc2396E" href="mailto:st159047@stud.uni-stuttgart.de"><st159047@stud.uni-stuttgart.de></a><br>
<b>Gesendet:</b> Mittwoch, 25. November 2020 07:25<br>
<b>An:</b> <a class="moz-txt-link-abbreviated" href="mailto:asma.sohail@hotmail.de">asma.sohail@hotmail.de</a>
<a class="moz-txt-link-rfc2396E" href="mailto:asma.sohail@hotmail.de"><asma.sohail@hotmail.de></a><br>
<b>Betreff:</b> WG: Heating Type Manager (Heating Load is
too high)</font>
<div> </div>
</div>
<div dir="ltr"><strong>
<div><font size="2" face="Tahoma" color="#000000"> </font></div>
</strong>
<hr tabindex="-1" style="display:inline-block; width:98%">
<font size="2" face="Tahoma"><b>Von:</b> TRNSYS-usersIm
Auftrag vonhotline via TRNSYS-users<br>
<b>Gesendet:</b> Mittwoch, 25. November 2020 03:24:44
(UTC-12:00) Internationale Datumsgrenze West<br>
<b>An:</b> TRNSYS users mailing list at OneBuilding.org<br>
<b>Cc:</b> hotline<br>
<b>Betreff:</b> Re: [TRNSYS-users] Heating Type Manager
(Heating Load is too high)<br>
</font><br>
<div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
Hello Asma, </div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
I had a quick look at your .tpf-File and it seems that you
are using the Qsens output from the building, converting
these in the Equations "Q_sens" and then plotting them,
right? The building outputs come in <span
style="background-color:rgb(255,255,255);
display:inline!important">kJ/hr, so in the equation
you're only converting them to W, not W/m². I didn't
check the project in detail though, so i don't know if
that accounts for all of the difference.</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<span style="background-color:rgb(255,255,255);
display:inline!important"><br>
</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<span style="background-color:rgb(255,255,255);
display:inline!important">I hope this helps, let me know
if it is a different problem.</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<span style="background-color:rgb(255,255,255);
display:inline!important"><span><br>
</span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<span style="background-color:rgb(255,255,255);
display:inline!important"><span>Best, </span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<span style="background-color:rgb(255,255,255);
display:inline!important"><span>Christina </span></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="x_divRplyFwdMsg" dir="ltr"><font
style="font-size:11pt" face="Calibri, sans-serif"
color="#000000"><b>Von:</b> TRNSYS-users
<a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users-bounces@lists.onebuilding.org"><trnsys-users-bounces@lists.onebuilding.org></a> im
Auftrag von Asma Sohail via TRNSYS-users
<a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users@lists.onebuilding.org"><trnsys-users@lists.onebuilding.org></a><br>
<b>Gesendet:</b> Mittwoch, 25. November 2020 14:15<br>
<b>An:</b> <a class="moz-txt-link-abbreviated" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users@lists.onebuilding.org"><trnsys-users@lists.onebuilding.org></a><br>
<b>Cc:</b> Asma Sohail <a class="moz-txt-link-rfc2396E" href="mailto:asma.sohail@hotmail.de"><asma.sohail@hotmail.de></a><br>
<b>Betreff:</b> [TRNSYS-users] Heating Type Manager
(Heating Load is too high)</font>
<div> </div>
</div>
<div dir="ltr">
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
Hello trnsys-users,</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
this is Asma from the University of Stuttgart. Right now
I'm working at my diploma thesis using TRNSYS and a
problem occured we were not able to solve yet. I hope
that you might have a solution or an idea how to fix it.
In TRNBuild I'm using the Heating Type Manager with
unlimited power to heat a room to a certain temperature
(20°C). I'm only using convective heat. But something is
not working properly with the simulation. I get a
heating load that is far too high for certain
rooms. Specifically, it is about interior rooms with a
too high heating load. I've already checked all links or
sources of error, but haven't found anything that causes
an error. My maximum specific heating load should
actually be around 40 W / m² (144 kJ / h per m²), but I
get around 100 W/m² (360 kJ/h per m²), although the
outside temperature does not fall into the minus
range. It would be great if you had an idea
<div>how to fix that or if you could identify the
problem. Thank you very much in <span
style="color:rgb(0,0,0);
font-family:Calibri,Helvetica,sans-serif;
font-size:12pt">advance!! </span><span
style="color:rgb(0,0,0);
font-family:Calibri,Helvetica,sans-serif;
font-size:12pt">I attached the files I used in case
you have time to have a look at them.</span></div>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
Thanks and kind regards</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
Asma </div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
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<pre class="moz-quote-pre" wrap="">_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a>
<a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
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</blockquote>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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