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首页> 外文期刊>Building and Environment >Impact of GHGs temporal dynamics on the GWP assessment of building materials: A case study on bio-based and non-bio-based walls
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Impact of GHGs temporal dynamics on the GWP assessment of building materials: A case study on bio-based and non-bio-based walls

机译：温室气体动态对建筑材料GWP评估的影响 - 以生物为主的非生物墙体案例研究

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In a static Life Cycle Assessment (LCA), the global warming potential (GWP) is calculated assuming Green House Gas (GHG) impact to be independent of their emission or uptake timing.This study investigates if this approach is adequate to fully capture the global warming impact (GWI) of building materials. Static LCA (sLCA) was compared to dynamic LCA (dLCA) on two case studies, a conventional wall made of concrete and mineral wool, and a bio-based wall made of wood and straw.The main results are:sLCA do not allow to evaluate the real GWI of building materials. This might mislead the comparison of building materials.GWP indicator might be estimated at 100- and 500-year-TH to better support mitigation in the building sector;The relative metric in kgCO(2) equivalent misleads conclusions. Absolute global warming indicators calculated with dLCA might be fairer to compare building materials' GWI;sLCA with at 100 years GWP indicator and a relative metric in kgCO(2)e, which is the approach currently used in the French building sector, disadvantages bio-based solutions compared to conventional ones;dLCA applied to an alternative functional unit - maintaining a housing function during several centuries-demonstrates that temporary carbon storage induced by bio-based materials do not lead to dramatic carbon release for future generations.
机译：在静止生命周期评估（LCA）中，假设绿色房屋气体（GHG）影响与其排放或摄取时刻无关，计算全球变暖潜力（GWP）。如果这种方法足以完全捕捉全球，则研究调查该研究。建筑材料的温暖冲击（GWI）。将静电LCA（SLCA）与动态LCA（DLCA）进行比较，在两种情况下，一种由混凝土和矿棉制成的传统壁，以及由木材和吸管制成的生物基壁。主要结果是：SLCA不允许评估建筑材料的真正GWI。这可能误导了建筑材料的比较。可以在100-和500秒估计建筑物部门的估计下的标准指标; KGCO（2）相对度量的相对度量得分得出结论。使用DLCA计算的绝对全球变暖指标可能更为更公平，可以比较建筑材料的GWI; SLCA与100年GWP指示器和KGCO（2）E的相对公制，这是法国建筑业目前用于生物的缺点的方法与传统的解决方案相比; DLCA应用于替代功能单元 - 在几个世纪中保持壳体功能 - 表明由生物基材料引起的临时碳储存不会导致后代的戏剧碳释放。

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