{"id":3133,"date":"2024-05-15T10:36:19","date_gmt":"2024-05-15T08:36:19","guid":{"rendered":"https:\/\/www.gebaeudesimulation.ch\/?p=3133"},"modified":"2026-02-19T10:09:01","modified_gmt":"2026-02-19T09:09:01","slug":"etude-de-simulation-pour-loptimisation-de-la-protection-thermique-dete-et-des-besoins-energetiques-dans-les-batiments-de-loft","status":"publish","type":"post","link":"https:\/\/www.gebaeudesimulation.ch\/fr\/simulationsstudie-zur-optimierung-des-sommerlichen-waermeschutzes-und-energiebedarfs-in-sbb-gebaeuden\/","title":{"rendered":"\u00c9tude de simulation pour l'optimisation de la protection thermique estivale et des besoins en \u00e9nergie dans les b\u00e2timents des CFF"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Le site <a href=\"https:\/\/www.ost.ch\/de\/forschung-und-dienstleistungen\/technik\/erneuerbare-energien-und-umwelttechnik\/spf-institut-fuer-solartechnik\" data-type=\"link\" data-id=\"https:\/\/www.ost.ch\/de\/forschung-und-dienstleistungen\/technik\/erneuerbare-energien-und-umwelttechnik\/spf-institut-fuer-solartechnik\">SPF Institut de technologie solaire<\/a> a \u00e9t\u00e9 charg\u00e9, par l'interm\u00e9diaire du bureau d'ing\u00e9nieurs CVC Tri Air SA, de v\u00e9rifier pour la CFF SA Gestion immobili\u00e8re, dans une \u00e9tude de simulation, la n\u00e9cessit\u00e9 d'un refroidissement actif et le besoin \u00e9nerg\u00e9tique global avec diff\u00e9rentes variantes.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p class=\"wp-block-paragraph\">Dans l'\u00e9tude de simulation, r\u00e9alis\u00e9e avec le logiciel IDA ICE d\u00e9velopp\u00e9 par EQUA Solutions AG, quatre variantes diff\u00e9rentes (\u00e9tat actuel plus trois autres variantes) ont \u00e9t\u00e9 analys\u00e9es et compar\u00e9es en termes de mesures passives et actives de protection thermique estivale. Pour chaque variante, le potentiel de surchauffe, la temp\u00e9rature maximale de l'air et les besoins en \u00e9nergie finale pour le refroidissement et le chauffage ont \u00e9t\u00e9 d\u00e9termin\u00e9s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les simulations ont permis de mettre en \u00e9vidence que l'approche globale (consommation d'\u00e9nergie finale sur l'ensemble de l'ann\u00e9e) peut, dans certains cas, donner des r\u00e9sultats diff\u00e9rents de ceux obtenus lorsque l'analyse est effectu\u00e9e selon des proc\u00e9dures et des prescriptions standard.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Du point de vue du client, l'\u00e9tude de simulation a apport\u00e9 la valeur ajout\u00e9e suivante :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Clart\u00e9 - L'installation d'un syst\u00e8me de refroidissement actif est n\u00e9cessaire, sinon le confort dans les pi\u00e8ces ne peut pas \u00eatre garanti.<\/li>\n\n\n\n<li>R\u00e9duction des co\u00fbts d'investissement - Il a pu \u00eatre d\u00e9montr\u00e9 que la protection solaire passive emp\u00eache bien le rayonnement solaire direct et que l'utilisation d'une protection solaire suppl\u00e9mentaire (p. ex. films de protection thermique, stores) entra\u00eenerait un besoin \u00e9nerg\u00e9tique global plus \u00e9lev\u00e9 en raison des gains moindres en hiver.<\/li>\n\n\n\n<li>Focus sur les mesures - Gr\u00e2ce au remplacement des fen\u00eatres existantes (r\u00e9duction des besoins en chauffage) et au remplacement de la chaudi\u00e8re \u00e0 gaz par une pompe \u00e0 chaleur (r\u00e9duction des \u00e9missions de CO<sub>2<\/sub>-), les investissements auraient un plus grand impact sur la durabilit\u00e9, car les besoins en chauffage sont sup\u00e9rieurs de plusieurs facteurs aux besoins en refroidissement.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nous remercions tout particuli\u00e8rement Amina Guliyeva et Igor Bosshard, qui ont \u00e9t\u00e9 responsables des travaux de simulation 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