Characterization of the acceptable daylight quality in typical residential buildings in Hong Kong

Jun Wang, Minchen Wei, Xiukai Ruan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


Characterizing daylight quality for flats in residential buildings is critically important in Hong Kong, where buildings are close to each other. In this study, we performed Climate Based Daylight Modeling (CBDM) calculations on 400 flats in a public housing property using three different methods. In addition to the Typical Meteorological Year (TMY) data, the actual weather data was measured throughout an entire year and used in the CBDM calculations. At the same time, a questionnaire survey was conducted to collect the residents' subjective evaluations on the daylight quality and luminous environment in their flats from a long-term perspective. Based on the 340 completed surveys, it was found that the residents' satisfaction with daylighting had the most significant influence on their satisfaction with overall luminous environment. Two measures—the average sDA300/50% and the maximum average daylight illuminance—were found to be highly correlated to the residents’ satisfaction with daylight in their flats. A flat with an average sDA300/50% above 66% and a maximum average daylight illuminance above 5,624 lx was found to provide acceptable daylight quality for typical residential buildings in Hong Kong.

Original languageEnglish
Article number107094
JournalBuilding and Environment
Publication statusPublished - Sept 2020


  • Climate based daylight modeling (CBDM)
  • Daylight quality
  • Daylight simulation
  • Luminous environment

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Building and Construction


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