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<p class="MsoNormal"><span lang="EN-CA">Hello everyone, <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">I have an issue with the Type 954b (air source heat pump with a gas auxiliary system).
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">I don’t understand why the efficiency of the auxiliary heater is not totally taking into account by TRNSYS.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Indeed, if I change the efficiency of the auxiliary system, I can see this change by plotting the output “total heat rate”. However, regardless this change, the output temperature of the Type 954b remains the same. In
other words, the output air temperature of the Type 954b does not seem influenced by the efficiency of the auxiliary system …
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">To illustrate my issue, here is an example of data at one specific time (the capacity of the auxiliary system is 22,578 kJ/h) :
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"> <o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">Efficiency<o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">Total heat rate (output of the Type 954b)<o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">Input air temperature of the Type 954b<o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">Output air temperature of the Type 954b<o:p></o:p></span></p>
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<td width="144" style="width:107.9pt;border:solid windowtext 1.0pt;border-left:none;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">Airflow<o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">90%<o:p></o:p></span></p>
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<td width="144" valign="top" style="width:107.85pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">20,320<o:p></o:p></span></p>
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<td width="144" valign="top" style="width:107.9pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">19.2<o:p></o:p></span></p>
</td>
<td width="144" valign="top" style="width:107.9pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">23.96<o:p></o:p></span></p>
</td>
<td width="144" valign="top" style="width:107.9pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">4,752<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td width="144" valign="top" style="width:107.85pt;border:solid windowtext 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">10%<o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">2,258<o:p></o:p></span></p>
</td>
<td width="144" valign="top" style="width:107.9pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">19.2<o:p></o:p></span></p>
</td>
<td width="144" valign="top" style="width:107.9pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">23.96<o:p></o:p></span></p>
</td>
<td width="144" valign="top" style="width:107.9pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-CA" style="font-size:9.0pt">4,752<o:p></o:p></span></p>
</td>
</tr>
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<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Is it normal ? Do you have an explanation to this ?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">If not, do you have any suggestions ? <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Thank you, <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Laura<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR-CA"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR-CA">Laura Guillon</span></b><span lang="EN-CA" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR-CA">,
Jr. Eng M.A.Sc<o:p></o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-CA" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR-CA">Project Leader<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:FR-CA"><br>
</span><b><span style="mso-fareast-language:FR-CA"><img width="68" height="24" style="width:.7083in;height:.25in" id="Image_x0020_2" src="cid:image002.jpg@01D33142.C656B490" alt="cid:image001.jpg@01CC82A8.133EEF70"></span></b><span style="mso-fareast-language:FR-CA">
<br>
</span><b><span style="font-size:7.5pt;font-family:"Arial",sans-serif;mso-fareast-language:FR-CA">Natural Gas Technologies Centre</span></b><span style="font-size:7.5pt;font-family:"Arial",sans-serif;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;mso-fareast-language:FR-CA">1350 Nobel, Suite 150, Boucherville, Quebec</span><span style="mso-fareast-language:FR-CA">
</span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;mso-fareast-language:FR-CA">J4B 5H3 (Canada)</span><span style="mso-fareast-language:FR-CA">
<br>
</span><span lang="FR" style="font-size:7.5pt;font-family:"Arial",sans-serif;mso-fareast-language:FR-CA">Tel.: 450-641-0021</span><span style="mso-fareast-language:FR-CA"><br>
</span><span lang="FR" style="mso-fareast-language:FR-CA"><a href="mailto:laura.guillon@ctgn.qc.ca"><span lang="FR-CA" style="font-size:7.5pt;font-family:"Arial",sans-serif;color:blue">laura.guillon@ctgn.qc.ca</span></a></span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="mso-fareast-language:FR-CA"><a href="http://www.ctgn.qc.ca/"><span lang="EN-CA" style="font-size:7.5pt;font-family:"Arial",sans-serif;color:blue">www.ctgn.qc.ca</span></a></span><span lang="EN-CA" style="font-size:7.5pt;font-family:"Arial",sans-serif;color:blue;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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