Dear all I use the surface output Uwin to assess the thermal impact of an external shading device. As you know the thermal properties entered for the shading devices are effective only if a shading device is actually defined for the window in the zone description. 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? Shading factor - Uwin w/o shading - Uwin with shading [kJ/h.m2.K] - DeltaR [m2.K.h/kJ] 1 - 4.93 - 4.22 - 0.034 0.75 - 4.93 - 4.36 - 0.027 Thanks for your help -- Antoine Gautier antoine.gautier@solamen.fr |