Daylight enhancement and lighting retrofits in educational buildings
Abstract
According to the International Energy Agency, lighting makes up about
19\% ((similar to)3000 TWh) of the global electric consumption. Often
the lighting energy savings cannot be provided in new buildings with new
lighting systems. Therefore, major potential in lighting energy savings
can be found in the existing building stock (older than 25 years).
Educational environments such as schools, colleges, universities
/campuses cover a significant percentage of the existing non-residential
building stock. This study focuses on lighting solutions for the
retrofitting of educational buildings, with a particular emphasis on two
University lecture halls which are located in Turkey/Konya and
Germany/Stuttgart. Evaluations of the pre-retrofitting lighting
performance are based on the measurements and observations. After a
detailed performance analysis, the best lighting retrofitting options
were identified. The retrofitting scenarios were simulated in virtual
environment and their impact in terms of identifying the most efficient
are discussed. The cost of retrofit estimation is done using the Relight
tool which is developed as a part of IEA-SHC Task 50 Subtask C.
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