<div>Dear Mr. Duffy,</div>
<div> </div>
<div> Many thanks for your reply!</div>
<div> </div>
<div> I’m so sorry for sending multiple identical emails to the TRNSYS users mailing list. Because I'm very anxious not to get those answers, that's some tasks my professor gave me, I must finish them these days. So I still have no other way to do with them after asking other guys, then I sent multiple identical emails to the TRNSYS users mailing list.</div>
<div> </div>
<div> sorry again!</div>
<div> </div>
<div> Br.</div>
<div> </div>
<div>wang</div>
<div> </div>
<div> </div>
<div> </div>
<div> <br><br></div>
<div class="gmail_quote">2011/2/23 Matt Duffy <span dir="ltr"><<a href="mailto:duffy@tess-inc.com">duffy@tess-inc.com</a>></span><br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote"><br><br>Dear Wang,<br><br><br>The following document has information about radiator/convector.<br><br><font size="3">
<p>ASHRAE, 2004 ASHRAE Handbook: HVAC Systems and Equipment, ASHRAE, Atlanta</p></font>Perhaps a basic heat transfer text, such as Incropera and Dewitt, may have information as well.<br><br>Best regards,
<div>
<div></div>
<div class="h5"><br><br>Matt Duffy<br><br><br><br><br>
<div style="BACKGROUND-REPEAT: repeat-x"><strong>----- Original Message -----</strong><br><strong>From:</strong> "王洋" <<a href="mailto:wanghongyang1767@gmail.com" target="_blank">wanghongyang1767@gmail.com</a>> <br>
<strong>Sent:</strong> Wed, February 23, 2011 15:22<br><strong>Subject:</strong> [TRNSYS-users] RADIATIVE PART of Heating<br><br>
<div>Dear all,<br><br>I want to make sure the exact value about RADIATIVE PART in the TRNBUILD Heating option. e.g. What's the exact RADIATIVE PART or Convection Part value of the wall heating and radiator and convector?<br>
<br>Or Please introduce me some TRNSYS references and literature about RADIATIVE PART or Convection Part value of the wall heating and radiator and convector etc.<br><br><br><br><br>Please introduce me some best English books about the heating(radiator, convector, Wandheizung and floor heating) operating or working fundamentals etc., walls' thermal energy storage and materials' pyhsics property etc., the infiltration and ventilation etc. and our this research topic's literatures we must read.<br>
<br><br>many thanks!<br><br>Br.<br><br>wang<br><br><br>
<div class="gmail_quote">在 2011年2月23日 上午11:01，王洋 <span dir="ltr"><<a href="mailto:wanghongyang1767@gmail.com" target="_blank">wanghongyang1767@gmail.com</a>></span>写道：<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Dear all,<br><br>I want to make sure the exact value about RADIATIVE PART in the TRNBUILD Heating option. e.g. What's the exact RADIATIVE PART or Convection Part value of the wall heating and radiator and convector?<br>
<br>Or Please introduce me some TRNSYS references and literature about RADIATIVE PART or Convection Part value of the wall heating and radiator and convector etc.<br><br><br><br><br>Please introduce me some best English books about the heating(radiator, convector, Wandheizung and floor heating) operating or working fundamentals etc., walls' thermal energy storage and materials' pyhsics property etc., the infiltration and ventilation etc. and our this research topic's literatures we must read.<br>
<br><br>many thanks!<br><br>Br.<br><br>wang<br><br>
<div class="gmail_quote">2011/2/23 <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>When replying, please edit your Subject line so it is more specific<br>than "Re: Contents of TRNSYS-users digest..."<br><br>Today's Topics:<br><br> 1. Re: Problems with calling EES (Type66a) (David BRADLEY)<br>
2. Re: Type66 EES and TRNSYS (David BRADLEY)<br> 3. Re: acceptable temperature range (Fred Betz)<br><br><br>---------- 已转发邮件 ----------<br>From: David BRADLEY <<a href="mailto:d.bradley@tess-inc.com" target="_blank">d.bradley@tess-inc.com</a>><br>
To: Doms Joris <<a href="mailto:joris.doms@vito.be" target="_blank">joris.doms@vito.be</a>><br>Date: Tue, 22 Feb 2011 16:40:04 -0600<br>Subject: Re: [TRNSYS-users] Problems with calling EES (Type66a)<br>
<div bgcolor="#ffffff" text="#000000">Joris,<br> It isn't actually the opening and closing that takes time (EES stays running the whole time). The slowness is the EES calculation time and the fact that EES is called at every single timestep and at every single iteration within a timestep of your TRNSYS simulation. There are a few different versions of Type66 that allow you to avoid calling EES whenever possible (basically an input that is an on/off switch for the EES calculations). If you know that your EES program doesn't have to be called (because the device that it models is inactive) then you can "turn off" the call to Type66 and save some time. Take a look at the EES example in the ..\TrnsysXX\Examples\Calling_EES\ directory; all the different options are shown in there.<br>
Kind regards,<br> David<br><br><br>On 2/20/2011 15:43, Doms Joris wrote:
<blockquote type="cite">
<div>Dear TRNSYS users,</div>
<div> </div>
<div><font face="times new roman">When simulating an applied thermal system, I'm using EES for the hydronic part. I programmed the hydronic circuit in EES and coupled it with TRNSYS via Type 66a. This coupling works fine, but;</font></div>
<div> </div>
<div><font face="times new roman">The problem is that the simulation runs very slow. Every timestep that TRNSYS calls EES, the EES project is opened and closed. Is there a way to set some settings so EES isen't closed and reopened each time, this would minimize the solution time alot.</font></div>
<div> </div>
<div><font face="times new roman">Thanks on advance</font></div>
<div> </div>
<div><font face="times new roman">Joris Doms</font></div><br>
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<p> </p></p></blockquote><br><pre cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a href="mailto:d.bradley@tess-inc.com" target="_blank">d.bradley@tess-inc.com</a>
<a href="http://www.tess-inc.com/" target="_blank">http://www.tess-inc.com</a>
<a href="http://www.trnsys.com/" target="_blank">http://www.trnsys.com</a></pre></div><br><br>---------- 已转发邮件 ----------<br>From: David BRADLEY <<a href="mailto:d.bradley@tess-inc.com" target="_blank">d.bradley@tess-inc.com</a>><br>
To: Simon Binnemans <<a href="mailto:simon.binnemans@khk.be" target="_blank">simon.binnemans@khk.be</a>><br>Date: Tue, 22 Feb 2011 16:57:40 -0600<br>Subject: Re: [TRNSYS-users] Type66 EES and TRNSYS<br>Simon,<br>If you would be willing to send me your TRNSYS project and EES code, I could probably debug it and find out why changing the size of szdelivertext isn't solving it. It may be that there is a limitation on the EES side of the connection as well; please don't quote me on that though until I get to look at it!<br>
Kind regards,<br>David<br><br><br>On 2/16/2011 04:36, Simon Binnemans wrote:<br>
<blockquote style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0pt 0pt 0pt 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Dear all,<br><br>I am currently using the Type66 object for exchanging data between TRNSYS and ees.<br>
At first it worked very well, but when I want to receive more than 34 inputs from ees, TRNSYS alway generates an error: "Error converting clipboard data to numbers."<br>After searching for this problem, I found that the problem was situated in the Type66 component, which only reads the first 512 characters from the clipboard. The suggested solution was to modify the value of szdelivertext to a higher number and recompile it.(<a href="https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004540.html" target="_blank">https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004540.html</a>)<br>
I modified the value of szdelivertext to 40 000 in stead of the standard 4000, but the result stayed the same.<br><br>Can anyone suggest a solution for this problem?<br><br>Best regards,<br></blockquote><br>-- <br>***************************<br>
David BRADLEY<br>Principal<br>Thermal Energy Systems Specialists, LLC<br>22 North Carroll Street - suite 370<br>Madison, WI 53703 USA<br><br>P:+1.608.274.2577<br>F:+1.608.278.1475<br><a href="mailto:d.bradley@tess-inc.com" target="_blank">d.bradley@tess-inc.com</a><br>
<br><a href="http://www.tess-inc.com/" target="_blank">http://www.tess-inc.com</a><br><a href="http://www.trnsys.com/" target="_blank">http://www.trnsys.com</a><br><br><br><br><br>---------- 已转发邮件 ----------<br>From: Fred Betz <<a href="mailto:fbetz@aeieng.com" target="_blank">fbetz@aeieng.com</a>><br>
To: Shahrdad JavidRad <<a href="mailto:shahrdad@live.de" target="_blank">shahrdad@live.de</a>>, TRNSYS USERS <<a href="mailto:trnsys-users@cae.wisc.edu" target="_blank">trnsys-users@cae.wisc.edu</a>><br>Date: Tue, 22 Feb 2011 17:42:26 -0600<br>
Subject: Re: [TRNSYS-users] acceptable temperature range<br>
<div lang="EN-US" vlink="purple" link="blue">
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<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">You’ll probably be better off using a simple feedback controller rather than an equation block because you can get frequent starts and stops or non-convergence warnings. </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">Also, that’s a pretty large temperature range to operate over. Are you driving an absorption chiller with those temperatures? </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">You might be better off controlling a variable speed pump to maintain your temperature range rather than shutting the pump off when the temperature exceeds 80C. If you shut off the pump when the temperature is over 80C, you risk exceeding the stagnation temperature of your panels in the real world. </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">There is a solar thermal panel in the TESS libraries that has a built in controller that has an output for a variable speed pump that works really well. </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">Good luck!</span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">Fred</span></p>
<p class="MsoNormal"><span style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"> </span></p>
<div>
<table style="WIDTH: 355.5pt" border="0" cellpadding="0" width="474">
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<p class="MsoNormal"><b><span style="TEXT-TRANSFORM: uppercase; COLOR: rgb(102,0,0); FONT-SIZE: 10pt">Fred Betz</span></b><b><span style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"> </span></b><span style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt">PhD., LEED AP <br>
</span><span style="TEXT-TRANSFORM: uppercase; COLOR: rgb(51,51,51); FONT-SIZE: 10pt">Sustainable Systems Analyst</span></p></td>
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<p class="MsoNormal"><b><span style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt">AEI</span></b><span style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"> | AFFILIATED ENGINEERS, INC. <br>5802 Research Park Blvd. | Madison, WI 53719<br>
<br></span><span style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt">P: 608.236.1175 | F: 608.238.2614</span><span style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"> <br></span><span style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt"><a href="mailto:fbetz@aeieng.com" target="_blank"><span style="COLOR: rgb(102,0,0); TEXT-DECORATION: none">fbetz@aeieng.com</span></a> | </span><b><span style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt"><a href="http://www.aeieng.com/" target="_blank"><span style="COLOR: rgb(102,0,0); TEXT-DECORATION: none">www.aeieng.com</span></a></span></b><span style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"> </span></p>
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<p class="MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Shahrdad JavidRad [mailto:<a href="mailto:shahrdad@live.de" target="_blank">shahrdad@live.de</a>] <br><b>Sent:</b> Tuesday, February 22, 2011 12:11 PM<br>
<b>To:</b> TRNSYS USERS<br><b>Subject:</b> [TRNSYS-users] acceptable temperature range</span></p></div></div>
<p class="MsoNormal"> </p>
<p style="MARGIN-BOTTOM: 12pt" class="MsoNormal"><span style="FONT-SIZE: 10pt"><br>Hello,<br><br>in my solar thermal system </span><span><span style="FONT-SIZE: 10pt" lang="EN">I</span></span><span style="FONT-SIZE: 10pt" lang="EN"> <span>want to</span> <span>define</span> <span>an</span> <span>acceptable</span> <span>interval</span> <span>for</span> <span>the collector</span> <span>outlet</span> <span>temperature</span> <span>[65-80°C]</span> by giving an output signal=1 for the pump in the collector loop. For any other temperatures out of this range </span><span style="FONT-SIZE: 10pt">the signal should be=0<br>
</span><span style="FONT-SIZE: 10pt" lang="EN"><br><span>For</span><span> </span><span>this</span><span> </span><span>purpose I am using an Equation block!! (Is there any controller, that is able to do it?)</span></span><span style="FONT-SIZE: 10pt"><br>
<br>I have defined these variables as:<br><br>T_min=65<br>T_max=80<br>T_out= collector outlet temperature<br><br>Signal=AND(GT(T_out,T_min),LT(T_out,T_max))*1+(1-AND(GT(T_out,T_min),LT(T_out,T_max)))*0<br><br>I have plotted the signal. It works fine but I am experiencing a very long simulation time. More than 15 minutes just for a week.<br>
<br>Is there any idea?<br><br>Thanks,<br>Shahrdad<br><br></span></p></div></div><br>_______________________________________________<br>TRNSYS-users mailing list<br><a href="mailto:TRNSYS-users@cae.wisc.edu" target="_blank">TRNSYS-users@cae.wisc.edu</a><br>
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