Integrating architectural and energy viewpoint for a multi objective optimization during early design stage

Sudip Pal, Atsushi Takano, Kari Alanne, Kai Siren

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


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.
Original languageEnglish
Title of host publicationProceedings of the Conference BSO2016
Subtitle of host publicationBuilding Simulation and Optimization, Newcastle, UK, September 2016
Number of pages8
ISBN (Electronic)978-0-7017-0258-8
Publication statusPublished - 24 Nov 2016
MoE publication typeA4 Article in a conference publication
EventBuilding Simulation and Optimization Conference - Great North Museum, Newcastle, United Kingdom
Duration: 12 Sep 201614 Sep 2016
Conference number: 3


ConferenceBuilding Simulation and Optimization Conference
Abbreviated titleBSO
Country/TerritoryUnited Kingdom
Internet address


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