<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor="#ffffff" text="#000000"> Hi all, I've created a simple model with ESP-r that contains : - a rectangular zone (3*5*2.7 m) - an other rectangular zone (2*3*2 m) - bases of zones are connected to a ground profile (profile 1 in ESP) - all others surfaces are defined as exterior, except for two (one surface on zone 1 is connected to zone 2 and vice versa) - all constructions are maded with a 100 mm thickness of insulation material, except ceilings that are a double glazing (transparent construction) - no internal gains, infiltration, ventilation I've created this model with the native windows GTK interface (v 11.7). There are no problems with simulation. I've also created the same model with another software and export it into ESP format. The model exported is exactly the same : - vertices coordinates are the same, - surfaces definitions are the same, - site location, albedo, exposure, ... - CON and TMC files are the sames - window native v 11.7 The only differences are : - for materials db I'm using different version of storage (1.1 for the exported model, no information for the model created manually). - the order of surfaces definitions is not the same Can the second point be an explication of the difference of results ? I observe typically a difference in db temperature of 0.02 °C for a simulation on 9 1 to 15 1. The order can produce differents matrix for theses models, and perhaps explain theses differences ? or is the solver convergency criteria that can produce theses differences ? or the method used to solve coupled zones ? Regards, Clement Marcel <div class="moz-signature">-- <div align="left">Clément MARCEL responsable scientifique et technique <a href="mailto:clement.marcel@viherio.fr">clement.marcel@viherio.fr</a> <a href="www.viherio.fr"><img src="cid:part1.06020402.06040501@viherio.fr" alt="Viheriö SARL" border="0"></a> 22 rue Chateauvert 26000 VALENCE téléphone | 0 469 305 202 mobile | 06 69 68 32 72 télécopie | 0 469 960 594 web | <a href="http://www.viherio.fr"> www.viherio.fr</a> --------------------------------------------------------------------------------------------------------------------------------- Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de son ou ses destinataires. Toute modification, édition, utilisation ou diffusion non autorisée est interdite. L'émetteur décline toute responsabilité au titre de ce message s'il a été modifié, déformé, falsifié, infecté par un virus ou encore édité ou diffusé sans autorisation. --------------------------------------------------------------------------------------------------------------------------------- </div> </div> </body> </html>