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首页> 外文期刊>Building and Environment >Life cycle assessment in buildings: State-of-the-art and simplified LCA methodology as a complement for building certification
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Life cycle assessment in buildings: State-of-the-art and simplified LCA methodology as a complement for building certification

机译：建筑物的生命周期评估：最新和简化的LCA方法作为建筑物认证的补充

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The paper presents the state-of-the-art regarding the application of life cycle assessment (LCA) in the building sector, providing a list of existing tools, drivers and barriers, potential users and purposes of LCA studies in this sector. It also proposes a simplified LCA methodology and applies this to a case study focused on Spain. The thermal simulation tools considered in the Spanish building energy certification standards are analysed and complemented with a simplified LCA methodology for evaluating the impact of certain improvements to the building design. The simplified approach proposed allows global comparisons between the embodied energy and emissions of the building materials and the energy consumption and associated emissions at the use stage.rnThe results reveal that embodied energy can represent more than 30% of the primary energy requirement during the life span of a single house of 222 m~2 with a garage for one car. The contribution of the building materials decreases if the house does not include a parking area, since this increases the heated surface percentage. Usually the top cause of energy consumption in residential building is heating, but the second is the building materials, which can represent more than 60% of the heating consumption.
机译：本文介绍了生命周期评估（LCA）在建筑领域的最新应用，并提供了该领域中LCA研究的现有工具，驱动因素和障碍，潜在用户和目的的列表。它还提出了一种简化的LCA方法，并将其应用于针对西班牙的案例研究。对西班牙建筑能源认证标准中考虑的热模拟工具进行了分析，并以简化的LCA方法进行了补充，以评估某些改进对建筑设计的影响。所提议的简化方法允许对建筑材料的内含能量和排放与使用阶段的能耗和相关排放进行全球比较。结果表明，内含能量可以代表整个生命周期一次能源需求的30％以上222 m〜2的单间带车库的车库。如果房屋不包括停车区，建筑材料的贡献会降低，因为这会增加受热面积百分比。通常，住宅建筑能耗的首要原因是采暖，但是第二是建筑材料，其占采暖能耗的60％以上。

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