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Optimisation of daylight admission based on modifications of light shelf design parameters
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2018 (English)In: Journal of Building Engineering, ISSN 2352-7102, Vol. 18, p. 195-209Article in journal (Refereed) Published
Abstract [en]

This study was conducted to optimise daylight admission as ambient lighting in an open-plan examination room of a dental hospital in Bandung, Indonesia. Parametric design was conducted for new light shelves, to be placed on the east and west façades of the building. Optimisation was performed using genetic algorithm, taking into account the external and internal widths, external tilt angles, and specularity of the light shelves, for two scenarios: keeping and removing the existing overhangs on both façades. The optimisation objectives were to maximise the spatial daylight autonomy at the perimeter area (sDA300/50%(p)) and minimise the annual sunlight exposure (ASE1000,250) on the occupied floor area of the examination room. Different optimised values were obtained for the east and west façades. In the first scenario, the resulting objective function yields an increase of 4.9% compared to existing condition, whereas the increase is 16.7% in the second scenario. Both metrics in the second scenario have satisfied the criterion. Uncertainty in the first scenario is found smaller than that in the second scenario, due to the removal of overhangs that bring more daylight in the latter.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 18, p. 195-209
Keyword [en]
Annual sunlight exposure, Daylight, Genetic algorithm, Light shelf, Optimisation, Spatial daylight autonomy
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-227535DOI: 10.1016/j.jobe.2018.03.007ISI: 000432780300019Scopus ID: 2-s2.0-85044539459OAI: oai:DiVA.org:kth-227535DiVA, id: diva2:1206900
Note

QC 20180518

Available from: 2018-05-18 Created: 2018-05-18 Last updated: 2018-06-13Bibliographically approved

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Favero, Federico

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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