Analysis and evaluation of BSDF characterization of daylighting systems
October 2021 - PDF 9.9MB
Editor: David Geisler-Moroder

This technical report summarizes the current state of the art in the field of characterization of daylighting and shading systems by bidirectional scattering distribution functions (BSDFs) and documents the results of an inter-laboratory round robin test. It is the result of collaborative work conducted by members of the IEA SHC Task 61 / EBC Annex 77, Subtask C2.
 

Spectral sky models for advanced daylight simulations
T61.C.3 – A Technical Report of Subtask C
June 2021 - PDF 12.02MB
Editor: Aicha Diakite-Kortlever

Lighting accounts for approximately 15 % of the global electric energy consumption and 5 % of greenhouse gas emissions. Growing economies, higher user demands for quality lighting and rebound effects as a result of low priced and more versatile electric lighting continuously still lead to an absolute increase of lighting energy consumption. More light is used, often less consciously.
 

BSDF Generation Procedures for Daylighting Systems
White paper
January 2021 - PDF 0.59MB
Editor: David Geisler-Moroder and Eleanor S. Lee

This white paper summarizes the current state of the art in the field of measurement and simulation characterization of daylighting systems by bidirectional scattering distribution functions (BSDFs) and provides recommendations broken down by classes of systems and use cases.

Workflows and software for the design of integrated lighting solutions
November 2019 - PDF 10.34MB
Editor: David Geisler-Moroder

Practitioners are using a wide variety of different workflows, methods and tools in the planning of integrated solutions for daylighting, electric lighting and lighting controls. Lighting design projects cover a huge variety of applications with different requirements as well as project types and sizes. Within the Subtask C “Design Support for Practitioners – Tools, Standards, Guidelines” of the IEA SHC Task 61 / EBC Annex 77 “Integrated Solutions for Daylighting and Electric Lighting: From Component to User Centered System Efficiency” currently applied workflows in practical applications have been reviewed.