<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><div>Hi users, <br><br>I am a recent TRNSYS user, and I need some help to model a double skin facade. <br><br>An old concrete building is partially covered by a glass "skin". The distance between the skin and the old facade is around 1.5 m. I have describe the building with TRNBUILD, but I don't know how I can do to model the air zone between the glass skin and the concrete face. The skin begins at the first floor (and is opened to air). It stops 1.2 m above the last level. The skin doesn't recover totally the building (The last floor is boundary to external).<br><br>I have tried to put the air zone in a particular zone in TRNBUILD, but I'd like to take into acount natural convection in the gap, to model air flow in the skin.<br><br>Thanks for jour help.<br><br>Adrien<br></div></div><br>
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