Provision of air-conditioning in apartment buildings of Hong Kong and the recent problems

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

2 Scopus Citations
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Original languageEnglish
Pages (from-to)13-21
Journal / PublicationInternational Journal for Housing Science and Its Applications
Issue number1
Publication statusPublished - 2001


Most people in Hong Kong live in high-rise apartment buildings that are concentrated in around 10% of the total land area. Humid sub-tropical climate and high building-and-population density make the use of air conditioners extremely popular to resist the summer heat. This paper first touches on some background information about the philosophy and design of apartment buildings in Hong Kong. A brief review of the use of air-conditioners in dwellings is then given. While window-mounted air-conditioner is still dominating the market, there is a recent trend for the property developers to provide split-type air-conditioners at new apartment buildings. For aesthetical reasons, the outdoor condensing units of these air conditioners are placed at the building re-entrants. Very often over two hundreds of these units are installed in one single re-entrant. Heat energy released from these condensers elevates the ambient air temperature and results in deterioration of the air-conditioners performance. A survey was thus carried out to gather relevant technical data from over a hundred of these re-entrants. The results of statistical analyses provide valuable information for pursuing further investigations.