Daylighting and Lighting

• Explain physical and technical terms on light, daylight and lighting systems.
• Draw up specifications for the visual indoor environment based on the Danish building regulations and international standards.
• Explain methods to calculate light transmittance and light distribution including radiosity and ray tracing methods.
• Calculate solar energy transmittance and light transmittance for window systems with systems for solar shading and daylight control.
• Calculate daylight availability in the room based on daylight provision static and dynamic methods, visual comfort and view access.
• Analyze the effect of shading systems on daylight and artificial light usage as well as visual comfort.
• Calculate light properties for lighting systems.
• Design artificial lighting systems based on the need for light, glare conditions and daylight using available products in the market.
• Calculate light distribution from the lighting system in rooms.
• Analyze the results from calculations of lighting conditions compared to requirements for the visual indoor environment.
• Know of and recommend daylight and lighting control systems to improve the indoor environmental conditions.
• Calculate the yearly energy demand for lighting.

Terminology for light, daylight and lighting systems. Design, function and properties of components in glass facades such as glazing and windows, solar shadings and daylight directing systems. Demands and wishes concerning light conditions in buildings. Methods, software, and tools and glass facades. Methods and tools for calculation of static and dynamic daylight conditions in rooms with different types of façade solutions. Calculate the effect of shades from the surroundings on the light conditions on the façade and in rooms. Design, function and properties of lighting systems. Methods and tools to calculate light and energy performance of lighting systems. Software and tools to calculate the dynamic interaction between the lighting system, daylight and solar shading system. Calculation of energy demand for lighting.

12350/11141/11000/11937, A basic knowledge on optical and energy related properties of windows is required.

Lectures, exercices and assignments.

The course relies on students bringing their own PC. The software used in the course requires a Windows based PC. Students using MAC computers can use Boot Camp to install a Windows partition on their computer. Students at DTU can for free download and install Windows via Microsoft Dreamspark. For more information follow the link https://www.campusnet.dtu.dk/cnnet/Software (you need a DTU login to open the link).
The course may be combined with the courses 11115, 11116 (please check for the corrected course numbers) and 12363 because daylight calculations is a natural part of integrated design of buildings and development of low energy buildings. The course can be part of both bachelor and master studies within civil engineering.