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Urban densification affects daylighting: existing daylight levels in Swedish multi-family housing as a base for future daylight requirement

Bournas, Iason LU ; Lundgren, Marja; Alenius, Malin and Dubois, Marie-Claude LU (2017) p.987-997
Abstract
This article presents the results of a study of the Swedish multi-family housing stock in relation to its daylight performance under overcast sky conditions. A total of 8573 rooms in 35 existing buildings were investigated using advanced lighting simulations to determine their point daylight factor, as defined in the current building regulations. The buildings were selected based on their architectural typology and construction era. The results show that, on average, the existing rooms meet the current daylighting requirement (point daylight factor DFp of 1%). The window sky exposure factor was found to affect the DFp significantly. Rooms with a large sky exposure angle that failed to meet the requirement were deep rooms or rooms with a... (More)
This article presents the results of a study of the Swedish multi-family housing stock in relation to its daylight performance under overcast sky conditions. A total of 8573 rooms in 35 existing buildings were investigated using advanced lighting simulations to determine their point daylight factor, as defined in the current building regulations. The buildings were selected based on their architectural typology and construction era. The results show that, on average, the existing rooms meet the current daylighting requirement (point daylight factor DFp of 1%). The window sky exposure factor was found to affect the DFp significantly. Rooms with a large sky exposure angle that failed to meet the requirement were deep rooms or rooms with a small window-to-floor ratio. The general conclusion is that the current requirement can be considered realistic to ensure an adequate provision of daylight in multi-family dwellings. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
daylighting, densification, daylight factor, multi-family housing, inventory
host publication
PROCEEDINGS of the INTERNATIONAL CONFERENCE on CHANGING CITIES III
pages
987 - 997
publisher
The Department of Planning and Regional Development, University of Thessaly
ISBN
978-618-5271-12-1
language
English
LU publication?
yes
id
08f121fe-292a-41df-a150-b8bdb61fb142
date added to LUP
2019-05-20 10:03:57
date last changed
2019-06-11 15:56:09
@inproceedings{08f121fe-292a-41df-a150-b8bdb61fb142,
  abstract     = {This article presents the results of a study of the Swedish multi-family housing stock in relation to its daylight performance under overcast sky conditions. A total of 8573 rooms in 35 existing buildings were investigated using advanced lighting simulations to determine their point daylight factor, as defined in the current building regulations. The buildings were selected based on their architectural typology and construction era. The results show that, on average, the existing rooms meet the current daylighting requirement (point daylight factor DFp of 1%). The window sky exposure factor was found to affect the DFp significantly. Rooms with a large sky exposure angle that failed to meet the requirement were deep rooms or rooms with a small window-to-floor ratio. The general conclusion is that the current requirement can be considered realistic to ensure an adequate provision of daylight in multi-family dwellings.},
  author       = {Bournas, Iason and Lundgren, Marja and Alenius, Malin and Dubois, Marie-Claude},
  isbn         = {978-618-5271-12-1 },
  keyword      = {daylighting,densification,daylight factor,multi-family housing,inventory},
  language     = {eng},
  pages        = {987--997},
  publisher    = {The Department of Planning and Regional Development, University of Thessaly},
  title        = {Urban densification affects daylighting: existing daylight levels in Swedish multi-family housing as a base for future daylight requirement},
  year         = {2017},
}