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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">Dear TRNSYS users,</font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">I am trying to simulate a flat plate solar collector. I want to:</font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">(1) Let the pump run when solar radiation is higher than specific number and </font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">(2) Set the output temperature at 85 °C.</font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font face="Calibri"><font size="3"><span style="mso-spacerun: yes"> </span>Type 540 can simulate the collector for constant output temperature but there is no control signal in its input for the other purpose. </font></font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">I think that I should use </font></p>
<p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1" class="MsoListParagraphCxSpFirst"><span style="FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol"><span style="mso-list: Ignore"><font size="3">·</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font size="3" face="Calibri">type 1 instead of type 540 for solar collector and a variable speed pump (type 3) </font></p>
<p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1" class="MsoListParagraphCxSpLast"><span style="FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol"><span style="mso-list: Ignore"><font size="3">·</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font size="3" face="Calibri">a differential controller (type 2d) and <span style="mso-spacerun: yes"> </span>an iterative feedback controller (type 22)</font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"><u>I don’t understand how I should connect the inputs and outputs of controllers to the variables of pump and collector.</u></font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">I really appreciate it if someone gives me a clue.</font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">Regards,</font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"> </font></p>Rambod Rayegan<br>Ph.D Candidate<br>Mechanical Engineering Department<br>Florida International University<br>