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<p>Jibi <br>
</p>
<p> A zero thermal efficiency results at any time that the
collector cannot produce any useful thermal energy. Efficiency is
defined in Type563's case as the energy produced divided by the
energy input (mainly indicent solar). If the collector is not
producing any useful thermal energy (because the sun is down) then
the efficiency is zero.<br>
</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 06/17/2018 19:48, Jibi Jais (지비 제이즈)
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAEAAPo+s+sA1cKzm6pcU=T_3pyT9L4YtfJxuJ6W6pg7J+RNRwQ@mail.gmail.com">
<div dir="ltr">
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif"><font
face="Arial" color="#0c343d">Dear all,</font></div>
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif;display:inline">I
used a type 563 PVT tool for my simple simulation.</div>
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif;display:inline">What
would be the possible reason for a zero thermal efficiency
output in the attached program file?</div>
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif;display:inline">Please
have a look.</div>
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif;display:inline">Thanks
</div>
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif;display:inline">Jibi</div>
<div class="gmail_default"
style="color:rgb(12,52,61);font-family:verdana,sans-serif"><br>
</div>
</div>
<br>
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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
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F:+1.608.278.1475
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