An Evaluation Method for Daylighting Quality in Buildings Under Clear Sunny Skies. (original) (raw)
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THE INFLUENCE OF SURROUNDING BUILDINGS ON EFFECTIVE DAYLIGHTING OF INTERIORS
A building envelope separates the interior and the exterior environments. It serves as the outer shell to protect the indoor environment as well as to facilitate its climate. According to a research conducted by the Energy Foundation in 2005, Ghana's energy needs may quadruple by the year 2020.Today, zero energy buildings are environmentally responsive and produce at least as much energy as they consume. This necessitates the provision of energy-efficient buildings to minimise the need for supplementary artificial lighting which will eventually save occupants and reduce the load exerted on the available energy sources. During the design stage, a building may be designed to conform to all standards necessary to achieve energy efficiency with natural daylight and ventilation. Since the building would not be constructed in isolation, but within a built environment, the surrounding buildings may influence the rate at which these natural elements are harnessed. This paper is aimed at assessing the impact of surrounding buildings on a subject building. To achieve this, different building types were assessed, where daylighting probabilities were analysed with Autodesk Ecotect Analysis tool. The subject building, a multi-storey residential building was initially analysed in isolation. The subject building was later surrounded by both low and high-rise buildings to assess their impact .the analysis revealed a reduction in energy efficiency, where the subject building is surrounded by only high rise buildings. The research concluded that the appropriate strategy may be to employ an appropriate mix of building types whilst harnessing natural daylight for energy efficiency.