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<p>Daniel,</p>
<p> Type50 takes a more theoretical approach to the thermal part of
the model. It is actually calculating the collector loss
coefficients based on the physical parameters that you give it.
The a0, a1, and a2 coefficients that you have from the
manufacturer are similar to the Fr(ta) and FRUL outputs that the
model computes and displays. I would use whatever physical data
you have (number of covers, etc.) and then tune the values of the
collector parameters that you don't have (plate absorptance, for
example) until you get similar thermal performance from Type50 and
from a "standard" quadratic efficiency collector model such as
Type1 that allows you to enter a0, a1, and a2 directly.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 1/3/2023 6:32 AM, Daniel Arbiol via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAB8cvB0df5bpWApZQyDYFiS2c-bo0Ph0Hv=vaADy19_XGu9Bjg@mail.gmail.com">
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<p><span style="font-size:10.5pt;font-family:"Segoe
UI",sans-serif" lang="EN-US">Dear users:<span></span></span></p>
<p><span style="font-size:10.5pt;font-family:"Segoe
UI",sans-serif" lang="EN-US">Currently I'm trying
to use type 50 (PVT flat solar
collector). <br>
To define its thermal efficiency, I have the data from
the manufacturer: the 3
coefficients of the efficiency curve, a0,a1 and a2
(quadratic efficiency). <br>
But there are no parameters inside the type that match
these data. Any clue of
how can I introduce them in this type?<span></span></span></p>
<p><span style="font-size:10.5pt;font-family:"Segoe
UI",sans-serif">Thanks in
advance.<span></span></span></p>
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<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<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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