Rule of thumb for daylighting of rooms with external obstructions

Nik Lukman Nik Ibrahim, Nik Ibrahim, Simon Hayman, Richard Hyde

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A daylighting ruleof thumb or simplified formula for side-lit room with external obstruction has been presented by Littlefair. Based on Littlefair's formula and daylighting simulations generated by AGi-32, a modified rule of thumb for daylighting is proposed for a location in Sydney, New South Wales (Latitude -35° South and Longitude -150° East). Previous daylighting rules of thumb for Sydney based upon simulations using Lumen Micro 8 are revisited and revised. Lumen Micro 8 has been noted for its tendency of giving higher illuminance readings compared to other simulation software. In this research, AGi-32 is utilized in daylighting simulation of medium to large size rooms with external obstructions angles ranging from 5° to 80° from the window sill height (or work plane). The impacts of different surface reflectances (0% and 25%) of external obstructions on indoor illuminance are also examined.

Original languageEnglish
Pages (from-to)151-160
Number of pages10
JournalArchitectural Science Review
Volume52
Issue number2
DOIs
Publication statusPublished - Jun 2009
Externally publishedYes

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Daylighting

Keywords

  • Daylighting
  • External obstructions
  • Rules of thumb
  • Simulations

ASJC Scopus subject areas

  • Architecture

Cite this

Rule of thumb for daylighting of rooms with external obstructions. / Nik Ibrahim, Nik Lukman; Ibrahim, Nik; Hayman, Simon; Hyde, Richard.

In: Architectural Science Review, Vol. 52, No. 2, 06.2009, p. 151-160.

Research output: Contribution to journalArticle

Nik Ibrahim, Nik Lukman ; Ibrahim, Nik ; Hayman, Simon ; Hyde, Richard. / Rule of thumb for daylighting of rooms with external obstructions. In: Architectural Science Review. 2009 ; Vol. 52, No. 2. pp. 151-160.
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