Testing of daylighting systems and development of daylighting design tools in IAE Sol Task 21: Dayligh in buildings

The means to reach the objective will be: - To provide an International Energy Agency (IEA) guidance for the integration of fenestration and daylighting systems in combination with strategies for control of electric lighting, - to provide a set of efficient, user-friendly daylighting design tools, and - an IEA report documenting pertinent case studies in buildings. The Task will focus on daylighting of new and existing buildings with a high aggregate electricity saving potential such as offices, schools, institutional and commercial buildings. The application of daylight systems will be considered under different climates when analyzing the impact on the overall energy balance and power demand by measurements, calculations, and computer simulations. Assessment will include a careful evaluation of visual and thermal comfort and user satisfaction of the daylighting systems and control strategies examined. The work has been organized in the following four subtasks: Subtask A: Performance evaluation of daylighting systems. Subtask B: Daylight responsive lighting control systems. Subtask C: Daylighting design tools. Subtask D: Case study buildings. Denmark participates in subtask A, C and D. This description and financial figures cover SBI's participation in subtask A and C, while Esbensen, Consulting Engineers participates in subtask D via a separate project