The Effectiveness of Light Shelf in Tropical Urban Context

Environmental and Climate Technologies 2016
Floriberta Binarti, Sinta Dewi

Light shelf was developed to create uniform indoor illuminance. However, in hot climates the unshaded clerestory above the shelf transmits high solar heat gain. In dense urban context, these advantages and disadvantages might vary regarding the context and position of the fenestration. This study employed an integrated energy simulation software to investigate the effectiveness of light shelf application in a tropical urban context in terms of building energy consumption. Radiance and EnergyPlus based simulations performed the effects of urban canyon aspect ratio and external surface albedo on the daylighting performances, space cooling load, as well as the lighting energy consumption of the building equipped with lightshelves in 2 humid tropical cities. Comparison of the energy performances of 3 fenestration systems, i.e. fenestration without any shading device, with overhangs, and with light shelves, yielded some recommendations concerning the best application of light shelf on the certain floor levels and aspect ratio of the urban context.

Keywords
Cooling load; daylighting performance; electrical lighting load; light shelf; urban geometry; urban surface albedo
DOI
10.1515/rtuect-2016-0012
Hyperlink
https://content.sciendo.com/view/journals/rtuect/18/1/article-p42.xml

Binarti, F., Dewi, S. The Effectiveness of Light Shelf in Tropical Urban Context. Environmental and Climate Technologies, 2016, Vol.18, pp.42-53. ISSN 1691-5208. e-ISSN 2255-8837. Available from: doi:10.1515/rtuect-2016-0012

Publication language
English (en)