Abstract
Skylight well efficiency (WE), a measure of the overall light transmittance of a skylight well, is influenced by the intrinsic characteristics of the well, such as its geometry and the visible reflectance of all its inner boundaries. In this study, a finite-element approach is used to model the distribution of the luminous energy inside square skylight wells with varying splay angles, height-to-width ratios, well-wall reflectance and effective reflectance of the glazed cover. Resulting efficiencies are compared to the results published by Serres and Murdoch where the skylight well efficiency was evaluated analytically on the assumption that the well-wall exitance is uniform across each surface irrespective of the depth of the well. The finite-element approach showed differences of up to 6% compared to the uniform exitance approach.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 153-159 |
| Number of pages | 7 |
| Journal | Lighting Research & Technology |
| Volume | 27 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 1995 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Skylight wells : A finite element approach to analysis of efficiency. / Boubekri, Mohamed; Anninos, W.
In: Lighting Research & Technology, Vol. 27, No. 3, 09.1995, p. 153-159.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Skylight wells
T2 - A finite element approach to analysis of efficiency
AU - Boubekri, Mohamed
AU - Anninos, W.
PY - 1995/9
Y1 - 1995/9
N2 - Skylight well efficiency (WE), a measure of the overall light transmittance of a skylight well, is influenced by the intrinsic characteristics of the well, such as its geometry and the visible reflectance of all its inner boundaries. In this study, a finite-element approach is used to model the distribution of the luminous energy inside square skylight wells with varying splay angles, height-to-width ratios, well-wall reflectance and effective reflectance of the glazed cover. Resulting efficiencies are compared to the results published by Serres and Murdoch where the skylight well efficiency was evaluated analytically on the assumption that the well-wall exitance is uniform across each surface irrespective of the depth of the well. The finite-element approach showed differences of up to 6% compared to the uniform exitance approach.
AB - Skylight well efficiency (WE), a measure of the overall light transmittance of a skylight well, is influenced by the intrinsic characteristics of the well, such as its geometry and the visible reflectance of all its inner boundaries. In this study, a finite-element approach is used to model the distribution of the luminous energy inside square skylight wells with varying splay angles, height-to-width ratios, well-wall reflectance and effective reflectance of the glazed cover. Resulting efficiencies are compared to the results published by Serres and Murdoch where the skylight well efficiency was evaluated analytically on the assumption that the well-wall exitance is uniform across each surface irrespective of the depth of the well. The finite-element approach showed differences of up to 6% compared to the uniform exitance approach.
UR - http://www.scopus.com/inward/record.url?scp=0029428366&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029428366&partnerID=8YFLogxK
U2 - 10.1177/14771535950270030401
DO - 10.1177/14771535950270030401
M3 - Article
AN - SCOPUS:0029428366
VL - 27
SP - 153
EP - 159
JO - Lighting Research and Technology
JF - Lighting Research and Technology
SN - 0024-3426
IS - 3
ER -