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<p>The outputs from the weather type will be the slope and azimuth of the collector surface - not the axis. It makes sense that it reaches it's minimum value around noon. In the morning it will be facing the horizon (nearly vertical) and will track towards more flat as the sun rises in the sky. A flat collector has a slope of zero.</p>
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<p>Jeff</p>
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<pre>---<br />Jeff Thornton
President - TESS LLC
3 N. Pinckney Street, Suite 202, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton@tess-inc.com
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<p>On 12/03/2019 8:58 am, -- Fed -- via TRNSYS-users wrote:</p>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px"><!-- html ignored --><!-- head ignored --><!-- meta ignored -->
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Hello everyone,</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">i was wondering if someone knows what the output for "slope of surface" refers to, in the weather type 15-6, when using tracking mode 3.</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">I have a collector array that rotates along a axis (the axis is horizontal (-> Parameter 8= slope of surface=0 ) and south oriented).</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">If the output <span style="font-family: Calibri, Helvetica, sans-serif; background-color: #ffffff; display: inline;">"slope of surface" was the actual slope of the axis (as it is in input) it should always be 0, but this is not the case, as it varies during the way reaching a minimum around midday.</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="font-family: Calibri, Helvetica, sans-serif; background-color: #ffffff; display: inline;"> </span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="font-family: Calibri, Helvetica, sans-serif; background-color: #ffffff; display: inline;">Thanks in advance,</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="font-family: Calibri, Helvetica, sans-serif; background-color: #ffffff; display: inline;"><br /> Federico</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
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