<br><br><div class="gmail_quote"> Dear all,<br><br>I have some questions about Factor for air flow of TEST DATA in TRNFLOW and QHEAT and Qheat loss: <br><br><br>1) I want to find the detailed information about "Factor for air flow" in Manual, because <font face="Arial" size="2"><span>I checked the
TRNFLOW Manual, but there is no explanations about Air Flow Factor not only in
Page 20: Test Data, but also in Page 36: chap.3.2.6 Test Data, besides that, the
Example Rest_com.tpf also has no Test Data as air link.</span></font> So Please tell me where is the exact explanation in manual.<br><br><span><font face="Arial" size="2"><br>
<br>2) QHEAT and Qheat loss question: I verified the
MASSLESS condition of BOX(1*1*1 m^3) by TRNSYS i.e. when walls are Massless, I
used one-dimensional and steady-state conduction heat transfer equation
to verify Qheat loss through all the walls and roof and floor by hand
which is the same as QHEAT by TRNSYS, and <span style="color: rgb(51, 51, 255);">QHEAT curve keeps constant all the time</span>, but under the same condition(</font></span>
there is no internal gains and no infiltration and ventilation in the
test room, I defined all the wall and floor boundary temperature of
the test room are 10°C, initial indoor air temperatures of the test room
are 20°C, other wall's initial boundary temperature is 10°C etc.
simplified condtions in order to verify<span><font face="Arial" size="2">) when walls have Mass Effect, the result of Qheat loss I used </font></span><span><font face="Arial" size="2">one-dimensional
and steady-state conduction heat transfer equations by hand is 24000
kJ/day, but QHEAT value by TRNSYS is 6600 kJ/day. And <span style="color: rgb(51, 51, 255);">QHEAT curve doesn't keep constant all the time, until up to about 240th hour, QHEAT begins to keep the constant</span>(please see the ATTACHED).</font></span>
PLEASE explain some possible reasons(why QHEAT curve cann't keep
constant of 2nd condition but indoor and outdoor (even the inside and
outside wall surface also ) indeed keep constant 20°C and 10°C all the
time? why the two results differ so much? etc. ).<br>
<br>MAny thanks!<br><br>br.<br><br>wang<br><br><div class="gmail_quote">2011/3/20 <span dir="ltr"><<a href="mailto:trnsys-users-request@cae.wisc.edu" target="_blank">trnsys-users-request@cae.wisc.edu</a>></span><br>
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<br>Today's Topics:<br>
<br>
1. Re: quite same error than "Google SketchUp tutorial" onthe<br>
12th March (Matt Duffy)<br>
2. Type 11b Tempering Valve (Felix Martin Beutefuehr, BLV-TGE)<br>
<br><br>---------- 已转发邮件 ----------<br>From: "Matt Duffy" <<a href="mailto:duffy@tess-inc.com" target="_blank">duffy@tess-inc.com</a>><br>To: "Pauline GELIN" <<a href="mailto:p.gelin@katene.fr" target="_blank">p.gelin@katene.fr</a>>, <a href="mailto:trnsys-users@cae.wisc.edu" target="_blank">trnsys-users@cae.wisc.edu</a>, <a href="mailto:chester_83@hotmail.it" target="_blank">chester_83@hotmail.it</a><br>
Date: Sat, 19 Mar 2011 20:20:02 -0500 (CDT)<br>Subject: Re: [TRNSYS-users] quite same error than "Google SketchUp tutorial" onthe 12th March<br><br> Dear Pauline,<br><br>There could be a few different things wrong with your IDF. If you would like to send it over, I can take a look when I have a moment.<br>
<br>Best regards,<br><br>Matt Duffy<br> <br> <div style="background-repeat: repeat-x;"><b>----- Original Message -----</b><br><b>From:</b> "Pauline GELIN" <<a href="mailto:p.gelin@katene.fr" target="_blank">p.gelin@katene.fr</a>> <br>
<b>Sent:</b> Fri, March 18, 2011 5:51<br><b>Subject:</b> [TRNSYS-users] quite same error than "Google SketchUp tutorial" onthe 12th March<br><br><table width="100%" cellspacing="5"><tbody><tr><td><div> <div><div>
<p class="MsoNormal">Hi,</p><p class="MsoNormal"> </p><p class="MsoNormal"><span lang="EN-US">For my company, I am trying to find the best way to export graphic plan directly in TRNSYS17. </span></p><p class="MsoNormal">
<span lang="EN-US">Since yesterday I have tried to create a easy thermal building(with 2 zones including windows and a door) in sketchup8 thanks to the trnsys3d plug in. </span></p>
<p class="MsoNormal"><span lang="EN-US">Everything was ok (I saved correctly the idf file, I opened it in trnsys17..)until I wanted to open the sketchup8 file again to continue my building and I had the following error alert:</span></p>
<p class="MsoNormal"><span lang="EN-US">“</span></p><p class="MsoNormal"><span lang="EN-US">ERROR:</span></p><p class="MsoNormal"><span lang="EN-US">NoMethodError</span></p><p class="MsoNormal"><span lang="EN-US">undefined method `active_interface' for nil:NilClass</span></p>
<p><span lang="EN-US"> </span></p><p class="MsoNormal"><span lang="EN-US">BACKTRACE:</span></p><p class="MsoNormal"><span lang="EN-US">C:/PROGRA~1/Google/GO24A4~1/Plugins/Trnsys3d/lib/ModelManager.rb:426:in `selection_changed'</span></p>
<p class="MsoNormal"><span lang="EN-US">C:/PROGRA~1/Google/GO24A4~1/Plugins/Trnsys3d/lib/observers/SelectionObserver.rb:21:in `onSelectionBulkChange'</span></p><p class="MsoNormal"><span lang="EN-US">C:/PROGRA~1/Google/GO24A4~1/Plugins/Trnsys3d/lib/ModelManager.rb:426</span></p>
<p class="MsoNormal"><span lang="EN-US">“</span></p><p class="MsoNormal"><span lang="EN-US">From that, I tried to “modify the component” but in fact when I drew a rectangle on the wall, the software didn’t recognize it like a window, and it was all the same problem for all other modifications.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p><p class="MsoNormal"><span lang="EN-US">Thank you so much in adva!
nce for your answers and help. </span></p><p class="MsoNormal"><span> </span></p><p class="MsoNormal"><span lang="EN-US">Pauline Gelin.</span></p><p class="MsoNormal"><span lang="EN-US"> </span></p></div></div> <hr noshade size="1">
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</pre></div></td></tr> </tbody></table></div><br><br>---------- 已转发邮件 ----------<br>From: "Felix Martin Beutefuehr, BLV-TGE" <<a href="mailto:beutefuf@fh-trier.de" target="_blank">beutefuf@fh-trier.de</a>><br>
To: <a href="mailto:trnsys-users@engr.wisc.edu" target="_blank">trnsys-users@engr.wisc.edu</a><br>
Date: Sun, 20 Mar 2011 16:25:38 +0100<br>Subject: [TRNSYS-users] Type 11b Tempering Valve<br>Dear TRNSYS User,<br>
<br>
I am Using an Equation to calculate the Inlet-temperature of Type 11b<br>
Tempering Valve. Now I experienced that the outlet Temperature (Outlet 1 and<br>
2) do not equal the inlet temperature, what is strange to me. So what could be<br>
the reason for that behaviour?<br>
<br>
I did change the number of oscillations allowed, what did indeed deliver<br>
better results, but in some cases my simulation gets stucks ih the number of<br>
oscillations was changed to a higher value.....<br>
<br>
I hope someone can give a hint that will help solving my problem. MAny thanks<br>
in Advance<br>
<br>
Best regards<br>
<br>
Felix<br>
<br>
--<br>
<a href="http://webmail.fh-trier.de" target="_blank">http://webmail.fh-trier.de</a><br>
<br>
<br>
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