An Investigation into Parameters Affecting an Optimum Ventilation Design of High Density Cities
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AbstractThis paper addresses the process of optimising the benefits of the natural (air) environment in the case of a high density city in which the amount of building volume is ultimately constrained. It is hypothesised that, in densely built cities, the amount of vertically placed gaps, permeability and porosity of the cityscape will affect the ventilation and wind environment. Wind tunnel experiments are described in which different amounts and positions of gaps were applied to a simplified city layout. The air change potentials of buildings, an indicator of the air ventilation potential of the urban environment, as well as the air speed at pedestrian level were calculated. It can be established that a cityscape with more gaps will perform better. However it is also noted that the characteristics instead of the amount of gaps are more important parameters. Based on this investigation, a number of urban planning guidelines have been established for consideration by the Hong Kong Government.
All Author(s) ListNg E
Journal nameInternational Journal of Ventilation
Volume Number6
Issue Number4
Pages349 - 357
LanguagesEnglish-United Kingdom
Keywordscity layout; impact of building form; urban wind
Web of Science Subject CategoriesConstruction & Building Technology; CONSTRUCTION & BUILDING TECHNOLOGY; Energy & Fuels; ENERGY & FUELS

Last updated on 2020-05-06 at 00:16