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首页> 外文期刊>Journal of Cleaner Production >A multi-objective life cycle approach for optimal building design: A case study in Finnish context
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A multi-objective life cycle approach for optimal building design: A case study in Finnish context

机译：最佳建筑设计的多目标生命周期方法：芬兰背景下的案例研究

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This study demonstrates the possibility to use energy-cost optimal building designs based on life cycle approach. There is a lack of studies that cover the comprehensive assessment of both embodied energy (EE) and operational energy (OE) in a single optimization problem. The primary goal of the current study is to compare the optimized results of using OE+EE together and OE only. The optimization is performed on a case study building (townhouse) in Finland with three structural alternatives (i.e., reinforced concrete (RC); cross-laminated timber (CLT) and Steel). Different options for insulation thickness of external wall, roof, floor and window types were considered as decision variables as the scope of the present study is on building envelope. The objectives of the optimization are to minimize life cycle energy (LCE) and life cycle costs (LCC). The LCE difference between the most and least energy efficient solution on the pareto front is greater in case of the OE optimization, compared to OE+EE optimization. For all studied structures, the EE of the optimal solutions from OE+EE optimization ranges 16%-23% of LCE. Many of the non-dominated optimal solutions obtained from the OE+EE optimization shows a higher U-value for the building envelope components compared to the optimal solutions from the OE optimization. A relationship between both OE and EE with the overall thermal resistance of the building envelope is discussed to obtain a deeper understanding of such differences in U-value for the optimal solutions obtained from the OE+EE and OE optimization. (C) 2016 Elsevier Ltd. All rights reserved.
机译：这项研究证明了基于生命周期方法使用能源成本最优的建筑设计的可能性。缺乏研究来涵盖单个优化问题中对体现能（EE）和运行能（OE）的综合评估。当前研究的主要目标是比较一起使用OE + EE和仅使用OE的优化结果。该优化是在芬兰的一栋案例研究建筑（联排别墅）上进行的，该建筑具有三种结构替代方案（即钢筋混凝土（RC）；交叉层压木材（CLT）和钢）。外墙，屋顶，地板和窗户类型的隔热厚度的不同选择被视为决策变量，因为本研究的范围涉及建筑物的围护结构。优化的目的是使生命周期能量（LCE）和生命周期成本（LCC）最小化。与OE + EE优化相比，在OE优化的情况下，pareto前沿上最节能的解决方案之间的LCE差异更大。对于所有研究的结构，OE + EE优化产生的最佳解决方案的EE占LCE的16％-23％。与OE优化的最佳解决方案相比，从OE + EE优化获得的许多非支配性最佳解决方案对于建筑围护结构组件显示出更高的U值。讨论了OE和EE两者与建筑物围护结构的整体热阻之间的关系，以便更深入地了解从OE + EE和OE优化获得的最佳解决方案的U值差异。 （C）2016 Elsevier Ltd.保留所有权利。

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