A Multi-criterion Optimization for Passive Building Integrated with Vacuum Photovoltaic Insulated Glass Unit
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This article optimizes building design parameters to balance the building energy-saving and visual comfort objectives when utilizing the vacuum photovoltaic insulated glass unit (VPV IGU) as the building envelope. VPV IGU can reduce the air conditioning load as demonstrated in a previous study, where the window-to-wall ratio should be decreased to approximately 10% for energy saving. However, under such circumstance, the indoor visual comfort for the occupants cannot be guaranteed. With a simultaneous consideration of both the visual comfort and energy efficiency, this work explores the optimal passive building design through a multi-criterion approach based on the non-dominated sorting genetic algorithm II (NSGA-II). The annual energy and indoor environmental conditions of the selected prototype office building are predicted with EnergyPlus. Obtained results are then subject to a decision-making process to determine the final optimum solution which can provide guidance in green building design within different urban contexts.
KeywordsPassive building design Photovoltaic glazing Vacuum glazing Visual comfort Building energy conservation
The work described in this paper was supported by the Teaching Postgraduate Studentship Scheme and the Research Institute for Sustainable Urban Development (project No.: 1-ZVED) of the Hong Kong Polytechnic University.