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<div>The software is asking for the parameters from collectror testing when the performance is represented as a non linear function or a curve. In Canada and Europe the non linear collector test was used. In the United States, the collector performance has
been represented as a linear function as was required in the ASHRAE and NIST Solar Collector Test Standard. You may want to refer to Solar Energy Industries Association (SEIA) website or the Florida Solar Energy Center for more information. The collector
manufacturer may be able to give you the information that you need perhaps. </div>
<div><font face="tahoma">It possible to extract the information that you need by tedious manipulation of the linear collector test data. In software like TRNSYS and F-Chart mostly linear collector performance is used, although TRNSYS gives more options than
F-Chart.</font></div>
<div><font face="tahoma">Hope this helps.</font></div>
<div><font face="tahoma">S. F.Ahmed, PE</font></div>
<div><font face="tahoma">Stantec, </font></div>
<div><font face="tahoma">Butler, PA</font></div>
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<font color="#000000" size="2" face="Tahoma"><b>From:</b> bldg-sim-bounces@lists.onebuilding.org [bldg-sim-bounces@lists.onebuilding.org] On Behalf Of Brian A. Turner [bturner@ClarkNexsen.com]<br>
<b>Sent:</b> Friday, May 11, 2012 11:25 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] WATSUN collector inputs<br>
</font><br>
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<p><span style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt">Is anyone familiar with the Collector Test Data inputs for the WATSUN 2009 solar thermal modeling program? The program asks for 5 “Test Parameter” inputs A through E that relate
to the equation, “</span><span style="FONT-FAMILY: 'Verdana','sans-serif'; FONT-SIZE: 10pt">Q = Area ((A + B dT) Akt H - (C + D dT) dT - E)” with no reference to a testing protocol or information source. The units for the variables are: A (dimensionless),
B (1/deg C), C (W/m^2/deg C), D (W/m^2/deg C^2), and E (W/m^2). I haven’t been able to find collector data that relates to these inputs. Any insight would be greatly appreciated!<span style="COLOR: black"></span></span></p>
<p class="MsoNormal"><b><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #000099; FONT-SIZE: 10pt">Brian Turner
</span></b><b><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: gray; FONT-SIZE: 7.5pt">PE, CEM, LEED AP BD+C</span></b><b><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #000099; FONT-SIZE: 10pt">
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</span></b><b><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: gray; FONT-SIZE: 7.5pt">Norfolk, VA 23502</span></b><b><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: gray; FONT-SIZE: 7.5pt"><br>
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