{"id":9314,"date":"2026-09-21T12:27:36","date_gmt":"2026-09-21T10:27:36","guid":{"rendered":"https:\/\/bf-engineering.com\/?post_type=forschung&#038;p=9314"},"modified":"2026-10-03T12:29:28","modified_gmt":"2026-10-03T10:29:28","slug":"solar-simulation-in-france-cloud-and-tunnel-simulation-for-vehicle-testing","status":"publish","type":"forschung","link":"https:\/\/bf-engineering.com\/en\/research\/solar-simulation-in-france-cloud-and-tunnel-simulation-for-vehicle-testing\/","title":{"rendered":"Solar Simulation in France: Cloud and Tunnel Simulation for Vehicle Testing"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":7,"featured_media":9322,"menu_order":8,"template":"","meta":{"_acf_changed":false,"footnotes":""},"forschung-kat":[92],"class_list":["post-9314","forschung","type-forschung","status-publish","has-post-thumbnail","hentry","forschung-kat-news","no-featured-image-padding"],"acf":{"cpt-modules":{"":null,"description":"","button":null,"text":{"title":"","description":"Vehicle testing requires consideration of both the intensity of solar radiation and how it changes over time. Rapid transitions between sunlight and shade, such as when driving through a tunnel, place particular demands on air conditioning, thermal management and display systems.\r\n\r\nFor these testing applications, BF Engineering has installed a solar simulation system with cloud and tunnel simulation in France. The system combines 28 HMI luminaires, each rated at 2.5 kW, with a dedicated Cloud &amp; Tunnel Shutter System.\r\n\r\nThe shutter system enables rapid transitions between full irradiation and shading under controlled and repeatable conditions. For example, it can reproduce a vehicle moving from direct sunlight into a tunnel and returning to sunlight a few seconds later. The applied radiant load changes without the vehicle or ambient temperature immediately changing to the same extent.\r\n\r\nThe system achieves an irradiance of up to 1,200 W\/m\u00b2 across an irradiation area of 5.6 \u00d7 2.5 m. Airflow speeds of up to 150 km\/h are also possible during solar simulation testing. This combination provides realistic testing conditions for complete vehicles.\r\n\r\nApplications include testing heating, ventilation and air conditioning systems (HVAC), evaluating thermal management and investigating cabin comfort. Head-up displays (HUDs) can also be tested under rapidly changing light conditions.\r\n\r\nWith this installation, BF Engineering expands vehicle testing capabilities through precisely controlled transitions between solar irradiation and shading. This allows the effects of changing radiation and light conditions on vehicle systems to be investigated under repeatable conditions.","button":null},"gallery":"","references":"","tabs":null},"contact-person_selection":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Solar Simulation in France: Cloud and Tunnel Simulation for Vehicle Testing | BF Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bf-engineering.com\/en\/research\/solar-simulation-in-france-cloud-and-tunnel-simulation-for-vehicle-testing\/\" \/>\n<script type=\"application\/ld+json\" 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