TESS will be releasing an updated version of the solar collector library in a few weeks that includes the following changes:<br /><br />Quadratic efficiency equations for inlet, average, and outlet temperature forms of the efficiency equation<br /><br />Improved temperature seeking controls<br /><br />Updated incidence angle modifier algorithms for diffuse radiation<br /><br />These changes will eliminate your need to convert back to the linear form. So if you can wait a bit you won't have to do the regression.<br /><br />Jeff<br /><br />Jeff Thornton <br /> President - TESS, LLC <br /> <br /> 22 North Carroll Street - Suite 370<br /> Madison WI 53703 USA <br /> <br /> Phone: 608-274-2577 <br /> Fax: 608-278-1475 <br /> E-mail: thornton@tess-inc.com <br /> Web: www.tess-inc.com<br /> <br /> <br /> <br /> <!--replyfwdwrap--><div style="background-image: url(http://webmail.fusemail.com/de/r_bg_img.gif);background-position:top;background-repeat:repeat-x;"><strong>----- Or!
iginal Message -----</strong><br /><strong>From:</strong> "Andrés Montero" <andresmonteroi@gmail.com> <br /><strong>Sent:</strong> Wed, June 1, 2011 16:16<br /><strong>Subject:</strong> [TRNSYS-users] efficiency of solar collectors<br /><br /><table width="100%" cellspacing="5"><tbody><tr><td><div class="PrivateMsgDiv"><!-- begin sanitized html --> <div>Hello,</div><div> </div><div>Does anyone knows how to convert a quadratic efficiency equation (eta=a0-a1*(DT/I)-a2*DT^2/I with DT=0.5*(Tfluid_outlet-Tfluid_inlet)-Tamb) of a parabolic trough collector to a linear efficiency equation (eta=a-b*DT/I)? I need this conversion in order to use Type 536.</div> <div> </div><div>Thank you</div><div> </div><div>Andrés<br clear="all" /> </div> <!-- end sanitized html --> <hr size="1" noshade="noshade" /><pre>
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