du.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
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
  • rtf
Asymmetrical awnings: a way to increase daylight in buildings without increasing the overheating
Dalarna University, School of Technology and Business Studies, Environmental Engineering.
2006 (English)In: Eurosun 2006, Glasgow, Scotland, 2006Conference paper, (Other academic) Published
Abstract [en]

Different shapes of asymmetric awnings for east and west windows are investigated mathematically as well as by measurement in a model. A box with 90 cm side and a 30x30 cm window was placed outdoor in overcast weather and the daylight factor was measured at the bottom of the box when the window was unshaded or equipped with different awnings. The average daylight factor in the box decreased from 4.6% for the unshaded window to 1.0% when a full awning was used. With “the best” asymmetrical awning, the average daylight factor was 80% larger than with the full awing. Using Dutch climate, calculation of the energy from direct radiation transmitted through the window during the cooling season showed that this was decreased from 100% as an annual mean for the unshaded window down 22% with a full awing. With “the best” asymmetrical awning, 26% of the energy was transmitted. Calculation of the indoor temperature in a hypothetical row house in Netherlands show that the use of either normal or asymmetrical awnings considerable decrease the indoor temperature during the hot season. Therefore the use of asymmetrical awnings for east or west faced windows considerable can increase the daylight in buildings, with almost no change in overheating, compared to if traditional awnings are used.

Place, publisher, year, edition, pages
Glasgow, Scotland, 2006.
Keyword [en]
Awnings, daylight, overheating, window
Identifiers
URN: urn:nbn:se:du-2133OAI: oai:dalea.du.se:2133DiVA: diva2:521617
Conference
Eurosun 2006 , Glasgow, Scotland, 27-30/6, 2006
Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2012-04-24Bibliographically approved

Open Access in DiVA

fulltext(531 kB)286 downloads
File information
File name FULLTEXT01.pdfFile size 531 kBChecksum SHA-512
976a45332f22d7c009e241573a88469861996e1da59ed764be22266094f9f1080187430024145cf3e3455539145ba654aa615c3691554dfafb8ea017996a20b6
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Rönnelid, Mats
By organisation
Environmental Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 286 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 796 hits
CiteExportLink to record
Permanent link

Direct link
Cite
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
  • rtf