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Analysis of the payback of primary energy and CO_2 emissions in relation to the increase of thermal resistance of a building

机译：分析与建筑物热阻增加有关的一次能源和CO_2排放的投资回收期

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The authors of the paper present a methodological approach for combining environmental and energy life cycle assessments of building energy refurbishments towards a nearly zero-energy building. The authors applied the proposed approach to a case study and examined several energy class renovation scenarios. Specific life cycle indicators and paybacks were calculated for all scenarios. The paper analyses the efficiency of insulation of the external envelope of a building (the external wall, floor on the ground and the roof) in terms of 2E efficiency criteria (energy - non-renewable primary energy consumption and ecology - CO2 gas emissions), focusing on different thermal insulation materials. The life cycle assessment method was applied to analyse the environmental performance of building envelope insulation. Primary energy consumption and CO2 gas emissions when insulating the envelopes to change their energy efficiency class from F to B and from B to A++ were determined. The paper also presents a graphical interpretation of primary energy savings and CO2 gas emissions over a period of 60 years as well as identifies thermal insulation materials that are the most reasonable for building insulation in terms of energy and ecology. (C) 2018 Elsevier B.V. All rights reserved.
机译：本文的作者提出了一种方法学方法，用于将环境和能源生命周期评估相结合，以对接近零能耗的建筑进行整修。作者将提出的方法应用于案例研究，并研究了几种能源类别的翻新方案。针对所有情况计算了特定的生命周期指标和回报。本文根据2E效率标准（能源-不可再生的一次能源消耗和生态-CO2气体排放量）分析了建筑物外墙（外墙，地面和屋顶的外墙）的隔热效率，专注于不同的保温材料。采用生命周期评估方法对建筑围护结构的环境性能进行分析。确定了将封套隔热以将其能效等级从F更改为B，从B更改为A ++时的一次能源消耗和CO2气体排放。本文还对60年内的一次能源节约和CO2气体排放进行了图形化解释，并确定了就能源和生态学而言最适合建筑隔热的隔热材料。 （C）2018 Elsevier B.V.保留所有权利。

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