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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'>Dear TRNSYS users<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'>My questions concern section 5.7.13 of the TRNSYS 16.01 manual (Component
Mathematical Reference > Loads and structure > Type 18: Pitched Roof and Attic)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'>1/ Equation 5.7.2.1. (T_sa,eff = …) looks strange to me, and I am
not sure it is the one used in the Fortran code to calculate the effective sol-air
temperature. Is it right?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'>2/ My second question concerns the calculation of q”0: how are b_n
(coefficient of temperature difference at time n) and d_n (coefficient of heat flux
term at time n) computed or assumed?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'>Thanks for your help.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'>Best regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face=Arial><span style='font-size:
12.0pt;color:navy'>Charles LAUNAY</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><strong><b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>INES - Institut
National de l'Energie Solaire</span></font></b></strong><o:p></o:p></p>
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