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<p>Khem,</p>
<p> In the Type927 parameter list in your example project, the
parameter that sets the number of source temperatures in the
heating performance data file is set to 5 but in fact there are 6
values of source temperature in the data file. If you change the
value of parameter 9 from 5 to 6 then the Type will return the
expected power consumption and COP.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 11/02/2016 14:57, bridjesh gautam
via TRNSYS-users wrote:<br>
</div>
<blockquote
cite="mid:CAC+SyVYsTPhPaoV7BbVGkNZ+gZdoLEj-XFxjWovXXromjA7+2g@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Dear TRNSYS Users,</div>
<div><br>
</div>
<div>I am trying to use either TYPE 927 or 1221 in combination
with unglazed solar collectors and have some questions. If you
have any experience with W-W HP components, I would love to
hear from you. </div>
<div><br>
</div>
<div><b>1. Calculation of COP and Power </b></div>
<div><br>
</div>
<div>For some reason, when I input load temperature ,source
temperature and flow rate exactly as listed in heating
performance file, the COP and power consumption calculated by
the component is different than the values entered in the data
file. <br>
</div>
<div><b><br>
</b></div>
<div><b>Example </b></div>
<div>A line of example heating data file reads: (pre-installed
example) (Heating capacity =30000, Heating power=6000) </div>
<div><br>
</div>
<div>0.9007<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>0.6731<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>!Normalized
Capacity and Normalized Power at 1, 1, 15.556[C], -1.1111[C]<br>
</div>
<div><br>
</div>
<div>But when I put input load temperature 15.556 , source
-1.11, input and output mass flow = 1440 ( 0.4 l/s ,rated) ,
the model calculates Power and COP as 5961 kJ/hr and 4.59,
when clearly the input file shows power to be (0.67*6000),
which is not at all equal to what model calculates. COP values
are different too. For all these I just used Type 927 with no
change and the file is attached. </div>
<div><br>
</div>
<div><b>So my question is, am I understanding everything wrong
or are there some bugs in the code itself ? </b></div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>I hope, someone will be kind enough to answer me. </div>
<div><br>
</div>
<div>Your's</div>
<div>Khem Gautam </div>
<div>Masters student </div>
<div>Aarhus University, Denmark. </div>
<div><br>
</div>
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</div>
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</blockquote>
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<pre class="moz-signature" 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 class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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