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Proceedings of BSO Conference 2016: Third Conference of IBPSA-England

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Integrating Architectural And Energy View Point For A Multi Objective Optimization During Early Design Stage

Sudip Kumar Pal, Atsushi Takano, Kari Alanne, Kai Siren

Abstract: In recent years, applying optimization techniques towards the design of energy efficient buildings has become very useful. These techniques are particularly effective if they are used during architectural design stage, because early decisions have more profound effect on the final energy performance of buildings compared with later decisions. In this research, an optimization is performed on a hypothetical detached house to determine minimum energy performance with optimum cost level. The purpose is to demonstrate the use of simulation based optimization for an early design stage case study. An emphasis is placed on choosing design variables with a perspective of both architectural and engineering viewpoint. Particularly architectural design variable like geometry are inflexible to change later in the design process. The results suggest lowering the U-value for the external wall and window from their values mentioned in Finnish Building code D3. A 2-floor design is energy and cost optimal compared to 1-floor design. Space heating demand is the dominant energy component affected by the choice of design variables. Although the results are rather obvious, the power of simulation based optimization during the early design stage is shown. This investigation solves the problem of relevant data scarcity during early design phase and guides the decision making in an optimal manner. 1.
Pages: 25 - 32
Paper:
bso2016_1035