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<DIV dir=ltr><FONT color=#000000 size=2 face=Arial>For those who have the same problem,</FONT></DIV>
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<DIV dir=ltr><FONT size=2 face=Arial>I used <STRONG>Sombrero</STRONG> software to simulated the factor of shaded area every hour of the year. Trough a data reader I combined this result with the radiation data in Trnsys to obtain the total amount of energy along a year.</FONT></DIV>
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<DIV dir=ltr><FONT size=2 face=Arial>But I found some problems, that I´m trying to solve right now, with the diffuse radiation: The diffuse radiation depend on the Horizontal beam radiation and the total horizontal radiation, but this way results the diffuse radiation on the shaded area sometimes bigger than on the same unshaded area. And the modell should not consider reflexion on the shadow elements.</FONT></DIV>
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<DIV dir=ltr><FONT size=2 face=Arial>Anyone have experience with these problems?</FONT></DIV>
<DIV dir=ltr><FONT size=2 face=Arial>Thanks </FONT></DIV><FONT size=2 face=Arial></FONT></DIV>
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<DIV dir=ltr><FONT size=2 face=Tahoma><B>Von:</B> Sancho,Fernando<BR><B>Gesendet:</B> Mi 24.11.2010 17:42<BR><B>An:</B> trnsys-users@cae.wisc.edu<BR><B>Betreff:</B> [TRNSYS-users] Shading<BR></FONT><BR></DIV></DIV>
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<P><FONT size=2 face=Arial>(or how simple problems are not that simple ;-))</FONT></P>
<P>Hallo dear Trnsys-users,</P>
<P>I knew that type 68 simulates the shade from an external object... so I was sure I could do it quick and easily... but my collector field is quite big and the objects are near so I can not define an unique "obstruction.dat" because that would be referred to a point, not a surface.</P>
<P>I´ve already checked the archives but I didn´t find any solution... Is there any way to do it better than divide "manually" the surface in different small ones?????</P>
<P>Thanks in advanced<BR></P></DIV></BODY></HTML>