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<p>usually it is the difference between an energy loss and an energy
gain.<br>
</p>
<br>
<div class="moz-cite-prefix">On 08/23/2017 13:20, Farnaz Gholamali
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1246283239.585077.1503512415282@mail.yahoo.com">
<div style="color:#000; background-color:#fff; font-family:times
new roman, new york, times, serif;font-size:13px">
<div id="yui_3_16_0_ym19_1_1503512112509_2461">Hi dear trnsys
users</div>
<div id="yui_3_16_0_ym19_1_1503512112509_2461"><br>
</div>
<div id="yui_3_16_0_ym19_1_1503512112509_2461">I'm using type 50
PVT collector. Does any body knows what is the reason of
flactuation of useful energy rate between negative and
positive results?</div>
<div id="yui_3_16_0_ym19_1_1503512112509_2461"><br>
</div>
<div id="yui_3_16_0_ym19_1_1503512112509_2461">thank you</div>
</div>
<br>
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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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