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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear all<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I use the surface output Uwin to assess the thermal impact of an external shading device.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>As you know t</span><span lang=EN-US>he thermal properties entered for the shading devices are effective only if a shading device is actually defined for the window in the zone description.</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I get the following results whereas I specified DeltaR = 0.06 m2.K.h/kJ in input. Does anybody understand this better than I do? i.e. why does the shading factor modify the thermal impact though the shading device is only active during periods of time with zero irradiation? Why do I not get the expected DeltaR in output but half the value?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Shading factor - Uwin w/o shading - Uwin with shading [kJ/h.m2.K] - DeltaR [m2.K.h/kJ]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>1 - 4.93 - 4.22 - 0.034<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>0.75 - 4.93 - 4.36 - 0.027<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks for your help<o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>--<o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>Antoine Gautier<br>Solam</span><span style='color:#70B221'>en</span><span style='color:black'><br></span><span style='color:#404040'>+33 6 98 78 56 46<o:p></o:p></span></p><p class=MsoNormal><span style='color:#404040'>antoine.gautier@solamen.fr</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>