Evaluation of lighting performance in office buildings with daylighting controls

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

175 Scopus Citations
View graph of relations


Original languageEnglish
Pages (from-to)793-803
Journal / PublicationEnergy and Buildings
Issue number8
Publication statusPublished - Oct 2001


Lighting control integrated with daylighting is recognised as an important and useful strategy in energy-efficient building designs and operations. It is believed that proper daylighting schemes can help reduce the electrical demand and contribute to achieving environmentally sustainable building development. This paper presents field measurements on daylighting for a fully air-conditioned office building in Hong Kong. Electricity consumption by the fluorescent luminaires, indoor illuminance levels and the room parameters affecting daylighting designs were recorded and analysed. The measurements covered several cellular offices facing opposite orientations with and without daylighting controls. The findings suggest that daylighting schemes can result in substantial energy savings in air-conditioned office buildings in Hong Kong. Results are presented and the design implications are discussed. © 2001 Elsevier Science B.V. All rights reserved.

Research Area(s)

  • Daylight illuminance, Dimmable sensor, Electric lighting, Light transmittance