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Title: BSDF Data generation for daylight applications: A call for international standardization

Journal Article · · Lighting Research and Technology
ORCiD logo [1];  [2];  [3];  [4];  [5]; ORCiD logo [6];  [4];  [7];  [8];  [9];  [2]; ORCiD logo [5];  [10]; ORCiD logo [9]; ORCiD logo [11];  [2];  [12];  [13];  [5]
  1. Univ. Innsbruck (Austria)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  3. pab advanced technologies Ltd, Freiburg (Germany)
  4. Fraunhofer Institute for Building Physics IBP, Stuttgart (Germany)
  5. Fraunhofer Institute for Solar Energy Systems ISE, Freiburg (Germany)
  6. Vrije Universiteit Brussel (VUB), Brussels (Belgium)
  7. Lucerne School of Engineering and Architecture (Switzerland); Eidgenoessische Technische Hochschule (ETH), Zurich (Switzerland)
  8. Univ. Innsbruck (Austria); Bartenbach GmbH, Aldrans (Austria)
  9. Rhineland-Palatinate University of Technology Kaiserslautern-Landau (Germany)
  10. Univ. Innsbruck (Austria); Lucerne School of Engineering and Architecture (Switzerland)
  11. Hunan Univ., Changsha (China)
  12. Anyhere Software, Berkeley, CA (United States)
  13. HELLA Sonnen- und Wetterschutztechnik GmbH (Austria)

Standardized methods for generating angle-dependent, bidirectional, solar-optical properties for complex fenestration systems do not exist, which means that energy and daylight evaluations in building performance simulations often suffer from major inaccuracies. This position paper provides an overview of state-of-the-art data-driven methods for characterizing light scattering properties of fenestration materials and blind systems (e.g. fabrics, metal slats, patterned glazing), validation via laboratory, simulation and field tests, and salient issues in support of standardization of such methods via the International Standardization Organization (ISO). The ISO standard is intended to provide the fundamental underpinnings for recently mandated daylight standards that rely on bidirectional scattering distribution function data for climate-based daylight modelling and building performance simulations.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2497769
Journal Information:
Lighting Research and Technology, Journal Name: Lighting Research and Technology; ISSN 1477-1535
Publisher:
SAGECopyright Statement
Country of Publication:
United States
Language:
English

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