Daylight in Buildings:
A
Source Book on Daylighting Systems and Components
Report of IEA SHC Task 21 / ECBCS Annex 29, July 2000
Chapter 4: focuses on selected innovative daylighting systems that can be applied in new and existing buildings that have a high aggregate electricity savings potential (such as offices, schools, and other commercial and institutional buildings). The systems are classified according to whether they have been designed as shading or non-shading systems. An overview is given in Chapter 4.2 of all the described systems using a matrix format. The detailed systems descriptions include light shelves, louvers and blinds, prismatic panels and films, laser-cut panels, light-guiding materials, holographic optical elements, and anidolic systems, which are systems with reflectors based on non-imaging optics. Detailed information on each system follows the matrix. This information includes, for each system, a technical description, factors related to its application, methods of control, cost and potential energy savings, examples of use, and, in most cases, measured results. Potential energy savings are expressed in terms of daylight enhancement. Chapter 4 does not include glazing systems that selectively attenuate light without redirecting it, e.g., electrochromic or angular selective glazings.
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