Dear Christophe, I am not aware of a specific pergola model. I suppose that you could effectively model one by using a series of Type34 shading device models, each with an overhang and gap appropriate to one of the bars that run parallel to the window. You could then use an equation to sum the effects of the Type34s before passing the shaded ratiation to Type56. Kind regards, David Enertech wrote: Dear TRNSYS Users, -- ----------------------------------------------------------- David BRADLEY Solar Energy Laboratory - University of Wisconsin, Madison 1500 Engineering Drive Madison, WI 53706 Ph: +1 608 263 1589 Fax: +1 608 262 8464 email: dbradley@engr.wisc.edu web: http://sel.me.wisc.edu ----------------------------------------------------------- |