Parametric facade approach for an office building to reduce the irradiance level in Jakarta

Abstract

Energy used in multi-storey office building is mostly for air conditioning, and it is acknowledged that the energy could be minimized by reducing the cooling load. In general, the cooling loads are from internal and external heat. The external heat plays significantly in determining the cooling load; therefore, it is necessary to reduce the amount of solar radiation received by the external surface of the building. The objective of the paper is to investigate the reduction of solar radiation received by the surface of the multi-storey office building by applying parametric design study and to add a building envelope as the secondary skin as well as the architectural element. There are two steps of analysis in the methodology, (1) to conduct solar radiation analysis, and (2) to conduct building facade analysis. In the process, four alternatives form were simulated to obtain the most optimum shape in relation to the incident solar radiation reduction. The final parametric study results of the solar radiation and building facade analysis showed that the reduction of the irradiance is around 25% with the additional facades.