jm-nr-sunbeam-final.pdf (2.64 MB)
Download fileThe sunlight beam index
journal contribution
posted on 2015-12-07, 15:05 authored by John MardaljevicJohn Mardaljevic, Nicolas RoyThis paper describes a fundamental rethinking of the basis for the evaluation of the sun-
light potential of spaces. It provides a robust methodology to answer the question: how
much sunlight can enter a room? The measure proposed is the cross-sectional area of
beam sunlight that passes through a window. The new measure { called the sunlight
beam index { is described, and examples are given for a realistic residential dwelling.
The sunlight beam index is determined for a full year on a time-step basis (e.g. every
15 minutes), but it can be aggregated into monthly or yearly totals. The annual total
provides a single measure for: one window; a group of windows; or, all the windows for
an entire dwelling.
History
School
- Architecture, Building and Civil Engineering
Published in
Lighting Research and TechnologyCitation
MARDALJEVIC, J. and ROY, N., 2016. The sunlight beam index. Lighting Research and Technology, 48(1), pp.55-69.Publisher
© The Authors. Published by SAGE PublicationsVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2016Notes
This paper was accepted for publication in the journal Lighting Research and Technology and the definitive published version is available at http://dx.doi.org/10.1177/1477153515621486ISSN
1477-1535Publisher version
Language
- en