{"id":9675,"date":"2026-11-03T13:29:26","date_gmt":"2026-11-03T12:29:26","guid":{"rendered":"https:\/\/bf-engineering.com\/?post_type=anwendung&#038;p=9675"},"modified":"2026-11-03T13:47:23","modified_gmt":"2026-11-03T12:47:23","slug":"complete-rail-vehicles","status":"publish","type":"anwendung","link":"https:\/\/bf-engineering.com\/en\/application\/complete-rail-vehicles\/","title":{"rendered":"Complete Rail Vehicles"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":7,"featured_media":9686,"menu_order":6,"template":"","meta":{"_acf_changed":false,"footnotes":""},"anwendung-kat":[82],"produkt-kat":[],"class_list":["post-9675","anwendung","type-anwendung","status-publish","has-post-thumbnail","hentry","anwendung-kat-rail","no-featured-image-padding"],"acf":{"cpt-modules":{"":null,"description":"<strong>Solar Simulation for Complete Rail Vehicles<\/strong>\r\n\r\nRail vehicles are exposed to different climatic conditions during daily operation. Direct solar radiation heats the roof, side surfaces and glazing, affecting the thermal balance of the entire vehicle. The extent to which this load affects the interior depends on factors including vehicle geometry, insulation, the materials used and the operation of the air conditioning system.\r\n\r\nCombining climatic testing with solar simulation makes it possible to investigate these relationships under controlled conditions. The complete vehicle and its thermal interactions are considered together. This helps identify how external loads affect individual vehicle areas and what effects changes to the design or equipment have.\r\n\r\nBF Engineering develops large-area irradiation systems for these test environments. The design is based on the vehicle dimensions, the intended irradiation surfaces and the requirements of the respective test programme.","button":null,"text":{"title":"","description":"","button":null},"gallery":"","references":"","tabs":[{"title":"Test Objectives","description":"<strong>Evaluate the complete vehicle as an interconnected thermal system<\/strong>\r\n\r\nIn a complete rail vehicle, the body, glazing, interior fittings and air conditioning interact. An irradiated roof surface, for example, can transfer heat into adjacent components, while additional radiant energy enters the passenger compartment directly through the windows. These different heat transfer paths influence temperature development inside the vehicle.\r\n\r\nComplete vehicle tests help reveal these relationships. Investigations can cover both the heating of a parked vehicle and its behaviour with the air conditioning operating. Transitions between different operating states can also be examined within a defined test sequence.\r\n\r\nFor development comparisons, initial conditions, irradiation and vehicle state are kept as consistent as possible. This allows the effects of different insulation concepts, glazing options or air conditioning strategies to be compared systematically.\r\n\r\nTypical areas of investigation:\r\n<ul>\r\n \t<li>Heating of the roof, side surfaces and glazing<\/li>\r\n \t<li>Heat input into passenger compartments and driver\u2019s cabs<\/li>\r\n \t<li>Temperature distribution along the vehicle<\/li>\r\n \t<li>Interaction between the vehicle body, insulation and air conditioning<\/li>\r\n \t<li>Comparison of different vehicle configurations and development stages<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Solar Simulation","description":"<strong>Large-area irradiation tailored to vehicle geometry and test objectives<\/strong>\r\n\r\nThe length and geometry of rail vehicles place particular demands on solar simulation. The irradiation concept must define which vehicle areas are exposed and how the radiation should be distributed across these surfaces. Depending on the test objective, roof surfaces, side areas or a combination of both may be relevant.\r\n\r\nLuminaire arrangement, irradiation direction and distance from the vehicle are considered together. Rooftop equipment, curved surfaces and protruding components can cause local shading and must be taken into account during planning. Uniform irradiation of a reference plane does not automatically mean that every vehicle surface absorbs the same radiant power.\r\n\r\nThe spectral characteristics of the radiation source are also part of the design process. The requirements depend on whether the investigation focuses primarily on thermal loading or also on the behaviour of particular glazing types and surfaces.\r\n\r\nKey design parameters:\r\n<ul>\r\n \t<li>Size and position of the intended irradiation surfaces<\/li>\r\n \t<li>Irradiance and spatial distribution across defined reference surfaces<\/li>\r\n \t<li>Irradiation direction, luminaire distance and vehicle contour<\/li>\r\n \t<li>Spectral requirements of the respective test objective<\/li>\r\n \t<li>Shading caused by rooftop equipment and attached components<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"System Design","description":"<strong>Plan vehicle dimensions and test facility operations together<\/strong>\r\n\r\nAn irradiation system for complete rail vehicles must fit into the spatial layout and operational processes of the test environment. In addition to vehicle length, width and height, access to the climatic chamber, positioning on the track and accessibility during test preparation are essential considerations.\r\n\r\nThe support structure and luminaire arrangement are tailored to the intended test positions. Working areas for instrumentation, access to rooftop components and sufficient clearances from the vehicle and chamber equipment must also be considered. Whether fixed, adjustable or movable arrangements are appropriate depends on the vehicle portfolio and the intended operating procedure.\r\n\r\nClearly defined positioning facilitates changes between test vehicles and supports comparable test conditions. Reference positions for the vehicle and documented settings for the irradiation system can be established for this purpose.\r\n\r\nKey aspects of system design:\r\n<ul>\r\n \t<li>Adaptation to vehicle contours and chamber geometry<\/li>\r\n \t<li>Consideration of different vehicle lengths and equipment heights<\/li>\r\n \t<li>Clearances for entry, instrumentation and maintenance<\/li>\r\n \t<li>Suitable arrangement of the support structure, luminaires and cabling<\/li>\r\n \t<li>Documented vehicle and system positions for recurring tests<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Measurement","description":"<strong>Record incident radiation and the vehicle\u2019s thermal response together<\/strong>\r\n\r\nA meaningful test combines the measurement of the external load with measurements on the vehicle. Irradiance is checked at defined reference positions. Additional temperature measurements show how the load affects the roof, side surfaces, glazing and interior.\r\n\r\nMeasurement locations are selected according to the specific investigation. For a heat transfer study, for example, corresponding measurement points on the outside and inside of a component may be useful. When evaluating air conditioning, temperatures in different occupied areas are also a focus.\r\n\r\nIn addition to individual readings, the development over time is crucial. Heating rates, delayed heat transfer and cooling behaviour only become apparent through recordings of sufficient duration. Vehicle state, irradiation profile and air conditioning operation should therefore be documented with a common time reference.\r\n\r\nRelevant measurement and documentation parameters:\r\n<ul>\r\n \t<li>Irradiance at the agreed reference positions<\/li>\r\n \t<li>Surface temperatures on the vehicle body and glazing<\/li>\r\n \t<li>Air temperatures in selected interior areas<\/li>\r\n \t<li>Ambient conditions and air conditioning operating state<\/li>\r\n \t<li>Temperature profiles during heating, steady-state conditions and cooling<\/li>\r\n<\/ul>","button":null,"image":"","tables":null},{"title":"Integration","description":"<strong>Solar simulation as a coordinated part of the test environment<\/strong>\r\n\r\nThe irradiation equipment forms part of an overall system comprising the climatic chamber, vehicle positioning, measurement equipment and test facility controls. Its integration therefore begins when the test objectives are defined. Irradiation surfaces, operating times and required load profiles influence both the technical design and the necessary interfaces.\r\n\r\nAn essential consideration is the additional heat released by the system. This must be taken into account when planning the test environment so that the intended ambient conditions can be achieved and maintained. Electrical supply, cable routing and accessibility for regular checks and maintenance are equally important.\r\n\r\nBF Engineering designs the irradiation equipment and coordinates its interfaces with the operator and the other system partners involved. Operation, enable signals, status messages and test sequences can thus be defined to suit the overall concept.\r\n\r\nRelevant integration considerations:\r\n<ul>\r\n \t<li>Electrical connection requirements and supply concept<\/li>\r\n \t<li>Heat released into the test environment<\/li>\r\n \t<li>Control interfaces and timing coordination of test sequences<\/li>\r\n \t<li>Enable signals, protective functions and defined system states<\/li>\r\n \t<li>Accessibility for maintenance, cleaning and verification measurements<\/li>\r\n<\/ul>","button":null,"image":"","tables":null}]},"contact-person_selection":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Complete Rail Vehicles | 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\" 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