<div>Dear all,</div>
<div> </div>
<div>I have some questions to ask you:</div>
<div> </div>
<div>To Type 22: The manual said this controller can be used to model a real feedback controller (e.g. PID) that would adapt its control signal continuously or use a discrete time step much shorter than the simulation time step in TRNSYS.<br>
<br>What's meaning of a discrete time step and the simulation time step ?<br> <br>Do you know how many minutes this Type 22's discrete time step is ? And what's the min. minutes this Type 22's discrete time step is ?<br>
<br>What's the min. simulation time step in TRNSYS?<br> <br>many thanks!<br> <br>br. <br> <br>wang<br><br><br></div>
<div class="gmail_quote">2010/10/19 王洋 <span dir="ltr"><<a href="mailto:wanghongyang1767@gmail.com">wanghongyang1767@gmail.com</a>></span><br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div>Dear all,</div>
<div> </div>
<div>I have some questions to ask you:</div>
<div> </div>
<div>To Type 22: The manual said this controller can be used to model a real feedback controller (e.g. PID) that would adapt its control signal continuously or use a discrete time step much shorter than the simulation time step in TRNSYS.<br>
<br>What's meaning of a discrete time step and the simulation time step ?<br> <br>Do you know how many minutes this Type 22's discrete time step is ? And what's the min. minutes this Type 22's discrete time step is ?<br>
<br>What's the min. simulation time step in TRNSYS?<br> <br>many thanks!<br> <br>br. <br> <br>wang<br><br></div>
<div class="gmail_quote">2010/10/19 <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: Trigeneration simulation: printing or convergence problem<br> ? (David BRADLEY)<br> 2. fresnel Collector (<a href="mailto:farah.gammoh@mirroxx.com" target="_blank">farah.gammoh@mirroxx.com</a>)<br>
3. UNSUSCRIBE (<a href="mailto:info@aacarchitecture.be" target="_blank">info@aacarchitecture.be</a>)<br> 4. Re: type 109 with 5 minutes time step (Dimas Firmanda Al Riza)<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: "<a href="mailto:wim.vansteenkiste@ugent.be" target="_blank">wim.vansteenkiste@ugent.be</a>" <Wim.Vansteenkiste@UGent.be><br>Date: Mon, 18 Oct 2010 12:45:26 -0500<br>Subject: Re: [TRNSYS-users] Trigeneration simulation: printing or convergence problem ?<br>
Wim,<br>asterisks in the output file are often an indication that the format statement for what was being printed was not correct. I am not sure what component you are using for your output device but if it is either Type25 or Type46 make sure that you are using an "unformatted" mode.<br>
Regards,<br>David<br><br><br>On 10/16/2010 12:45, <a href="mailto:wim.vansteenkiste@ugent.be" target="_blank">wim.vansteenkiste@ugent.be</a> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Dear TRNSYS-users,<br><br>I'm only been using TRNSYS for 2 months, so I'm quite new at it.<br><br>
I'm simulating a trigeneration system: a custom made gas engine model<br>combined with an absorption chiller.<br><br>TRNSYS doesn't indicate convergence problems after simulating.<br>Based on plotted values, the simulation seems satisfactory as well.<br>
<br>I print the output values of every component. When I view these output<br>values, there seems to be a problem:<br><br>A lot of values aren't printed. Instead of the value,<br>"***************" appears. This happens for almost every mass flow as<br>
well as for the energy rates in the absorption chiller. The strange<br>thing is that the values can be plotted, only when I print them I get<br>this problem. Temperatures and other values are printed correctly.<br><br>Do you have an idea of what could be the cause of this problem?<br>
<br>Thanks in advance,<br><br>Wim.<br><br><br>_______________________________________________<br>TRNSYS-users mailing list<br><a href="mailto:TRNSYS-users@cae.wisc.edu" target="_blank">TRNSYS-users@cae.wisc.edu</a><br><a href="https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users" target="_blank">https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users</a><br>
<br> <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: "<a href="mailto:farah.gammoh@mirroxx.com" target="_blank">farah.gammoh@mirroxx.com</a>" <<a href="mailto:farah.gammoh@mirroxx.com" target="_blank">farah.gammoh@mirroxx.com</a>><br>
To: "<a href="mailto:TRNSYS-users@cae.wisc.edu" target="_blank">TRNSYS-users@cae.wisc.edu</a>" <<a href="mailto:TRNSYS-users@cae.wisc.edu" target="_blank">TRNSYS-users@cae.wisc.edu</a>><br>Date: Mon, 18 Oct 2010 17:58:59 +0200<br>
Subject: [TRNSYS-users] fresnel Collector<br>Hello,<br>is there a way to simulate a fresnel collector field using once of the STE models?<br><br>thanks and best regards,<br>Farah<br><br><br><br>---------- 已转发邮件 ----------<br>
From: "<a href="mailto:info@aacarchitecture.be" target="_blank">info@aacarchitecture.be</a>" <<a href="mailto:info@aacarchitecture.be" target="_blank">info@aacarchitecture.be</a>><br>To: <a href="mailto:TRNSYS-users@cae.wisc.edu" target="_blank">TRNSYS-users@cae.wisc.edu</a><br>
Date: Mon, 18 Oct 2010 21:55:09 +0200<br>Subject: [TRNSYS-users] UNSUSCRIBE<br>
<div style="WORD-WRAP: break-word">Please Unsuscribe following adresses:
<div><a href="mailto:aac@win.be" target="_blank">aac@win.be</a></div>
<div><a href="mailto:info@aac-archi.be" target="_blank">info@aac-archi.be</a></div>
<div><a href="mailto:info@aacarchitecture.be" target="_blank">info@aacarchitecture.be</a></div>
<div><br></div>
<div>Thanks</div><br><br>
<div><span style="TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: medium Helvetica; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px">
<div><br>Marc Vande Perre </div>
<div><a href="mailto:mv@aacarchitecture.be" target="_blank">mv@aacarchitecture.be</a></div>
<div><br></div>
<div>n.v. AAC Architecture s.a. <br><span></span><span></span><span><img src="cid:10FDD6F7-FF09-4172-943E-E2B2D6F70BCA@domain.name" width="525" height="47"></span> </div></span></div><br></div><br><br>---------- 已转发邮件 ----------<br>
From: Dimas Firmanda Al Riza <<a href="mailto:dimasfirmanda@gmail.com" target="_blank">dimasfirmanda@gmail.com</a>><br>To: hotline <<a href="mailto:hotline@transsolar.com" target="_blank">hotline@transsolar.com</a>><br>
Date: Tue, 19 Oct 2010 10:32:47 +0800<br>Subject: Re: [TRNSYS-users] type 109 with 5 minutes time step<br>Dear all,
<div><br></div>
<div>I have problem again with simulation time step,</div>
<div><br></div>
<div>I use Type 9 data reader, with 5 minutes time step data,</div>
<div>1. How to write the simulation start time in (type 9) if I simulate it together with weather data in June (in type 109)?</div>
<div>2. I did a test with my data file, I connect type 9 with online plotter, I put data in type 9 like the note bellow,</div>
<div> and I set simulation start time 0 stop time is 120, when I set simulation time step to 5 minutes the simulation error, </div>
<div> but when simulation time step to 2.5 minutes, the simulation run, </div>
<div> Do I need to set simulation time step in control card below 5 minutes if the data is in 5 minutes interval?</div>
<div>3. I run my complete simulation, with type 9 and type 109, I set simulation time step to 2.5 minutes, i run simulation for a month,</div>
<div> but the simulation run only for several hour and then stopped, I got some warning:</div>
<div><br></div>
<div>simulation log:</div>
<div>
<div>Radiation while sun is down found 1 times <font color="#000099">(What is this?)</font></div>
<div> only the first 10 warnings with data info are printed </div>
<div> check: - Time of first data line</div>
<div> - Longitude and Latitude</div>
<div> REMARK: these radiation values are set to ZERO !</div>
<div><br></div>
<div> ***** WARNING FROM UNIT 2 TYPE 109 DATA READER</div>
<div> RADIATION DATA READ IN FROM FILE ==>Weather UTP - June 1-30 (5 min).109</div>
<div> AT LINE # 2 ARE SET TO ZERO SINCE SUN IS DOWN, ORIGINAL VALUE: 28.91 W/m²</div>
<div><br></div>
<div> ***** WARNING FROM UNIT 2 TYPE 109 DATA READER</div>
<div> RADIATION DATA READ IN FROM FILE ==>Weather UTP - June 1-30 (5 min).109</div>
<div> AT LINE # 3 ARE SET TO ZERO SINCE SUN IS DOWN, ORIGINAL VALUE: 28.91 W/m²</div>
<div><br></div>
<div><br></div>
<div>Simulation lst file:</div></div>
<div>
<div>*** Warning at time : 61.416667</div>
<div> Generated by Unit : Not applicable or not available</div>
<div> Generated by Type : Not applicable or not available</div>
<div> TRNSYS Message 441 : The inputs to the listed units have not converged at this timestep. The values at the last iteration will be used and the simulation will proceed.</div>
<div> Reported information : UNITS: 4 10 11 17</div>
<div> </div>
<div>*** Fatal Error at time : 61.416667</div>
<div> Generated by Unit : Not applicable or not available</div>
<div> Generated by Type : Not applicable or not available</div>
<div> TRNSYS Message 450 : The maximum number of warnings allowed per simulation has been exceeded. Please fix these warnings or increase the limit on the number of warnings allowed per simulation (LIMITS command)</div>
<div> Reported information : Not available</div>
<div> </div>
<div>*** Warning at time : 61.416667</div>
<div> Generated by Unit : Not applicable or not available</div>
<div> Generated by Type : Not applicable or not available</div>
<div> TRNSYS Message 442 : The listed differential equations have not converged at this timestep. The values at the last iteration will be used and the simulation will proceed.</div>
<div> Reported information : DIFFERENTIAL EQUATIONS: 1</div></div>
<div><br></div>
<div><br></div>
<div>Please help me to solve this problem, thank you very much</div>
<div><br></div>
<div>Best Regards,</div>
<div><br></div>
<div>Dimas</div>
<div><br></div>
<div>______________________________________________________________________________________________________________</div>
<div>Note:</div>
<div>Data in .txt file for type 9 (time interval 5 minutes):</div>
<div><br></div>
<div>
<div>25.07</div>
<div>40.18</div>
<div>42.77</div>
<div>0.00</div>
<div>27.82</div>
<div>27.91</div>
<div>15.28</div>
<div>46.04</div>
<div>30.81</div>
<div>54.12</div>
<div>33.61</div>
<div>54.50</div>
<div>49.43</div>
<div>54.36</div>
<div>85.52</div>
<div>57.23</div>
<div>83.40</div>
<div>83.58</div>
<div>105.23</div>
<div>98.98</div>
<div>96.83</div>
<div>108.26</div>
<div>113.00</div>
<div>121.50</div></div>
<div><br></div>
<div><br></div>
<div> <br><br>
<div class="gmail_quote">On Mon, Oct 18, 2010 at 3:59 PM, Dimas Firmanda Al Riza <span dir="ltr"><<a href="mailto:dimasfirmanda@gmail.com" target="_blank">dimasfirmanda@gmail.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">I have adjusted it by now, and it works! thanks a lot!
<div>I adjust it like below<br>
<div><br></div>
<div>
<div><interval><span style="WHITE-SPACE: pre-wrap"> </span>0.08333<span style="WHITE-SPACE: pre-wrap"> </span> ! Data file time interval between consecutive lines</div>
<div><firsttime><span style="WHITE-SPACE: pre-wrap"> </span>0.08333 ! Time corresponding to first data line (hours)</div>
<div><br><font color="#888888">-dimas-</font></div>
<div>
<div></div>
<div>
<div><br></div>
<div><br>
<div class="gmail_quote">On Mon, Oct 18, 2010 at 3:28 PM, hotline <span dir="ltr"><<a href="mailto:hotline@transsolar.com" target="_blank">hotline@transsolar.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial">Dimas,</font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial">did you also adjust the "Time corresponding to first data line" ?</font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial"><firsttime> 1 ! Time corresponding to first data line (hours)<br></font></span></div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial">In addition, you need to set the simulation time step to 5 minutes.</font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial">Marion</font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" size="2" face="Arial"> </font></span></div><br>
<div dir="ltr" lang="de" align="left">
<hr>
<font size="2" face="Tahoma"><b>Von:</b> Dimas Firmanda Al Riza [mailto:<a href="mailto:dimasfirmanda@gmail.com" target="_blank">dimasfirmanda@gmail.com</a>] <br><b>Gesendet:</b> Montag, 18. Oktober 2010 02:33<br><b>An:</b> <a href="mailto:trnsys-users@cae.wisc.edu" target="_blank">trnsys-users@cae.wisc.edu</a><br>
<b>Betreff:</b> [TRNSYS-users] type 109 with 5 minutes time step<br></font><br></div>
<div>
<div></div>
<div>
<div></div>
<p>Dear all, </p>
<div><br></div>
<div>I have 5 minutes time step weather data, </div>
<div>How to conduct simulation with 5 minutes time step using type 109, </div>
<div>do I need to change something in the .109 data file? </div>
<div>I've try to just change the data in .109 file from 1 hour time step with my 5 minutes time step data </div>
<div>but when I run simulation with 5 minutes time step the results become weird, </div>
<div>Thank you very much </div>
<div><br></div>
<div>Regards, </div>
<div><br></div>
<div>Dimas Firmanda A. </div>
<div>MSc student </div>
<div>Mechanical Engineering Department </div>
<div>Universiti Teknologi PETRONAS </div>
<p></p>
<p></p></div></div></div></blockquote></div><br></div></div></div></div></div></blockquote></div><br></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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