绿色建筑碳排放核算方法及减排路径研究

Research on Accounting Method and Emission Reduction Path of Green Building Carbon Emissions

装配式建筑作为绿色建筑的主力军,有着很大节能减排的潜力,是国家“十四五”规划中提到的碳中和的具体实现路径之一。为响应国家号召,为提出减排路径提供理论依据,以绿色建筑中的装配式建筑为研究对象,通过建立碳排放核算模型,对装配式建筑全生命周期的碳排放进行核算,分析其各个阶段碳排放的分布关系。研究结果表明,在装配式建筑的全生命周期中,运行阶段碳排放量最大,其占比约为67.09%,因此在这个阶段具有巨大的减排空间。建材生产与运输阶段的碳排放量占全生命周期的碳排放量比例约为31.18%。通过使用定量分析法来探究预制率与碳排放量之间的关系,进一步探究预制水平与物化阶段中各阶段碳排放量的关系。基于以上的研究,最后提出相对应的减排路径。

As the main force of green buildings,prefabricated buildings have great potential for energy conser-vation and emission reduction,and are one of the specific implementation paths for carbon neutrality men-tioned in the national"14th Five Year Plan".In response to the national call and to provide theoretical basis for proposing emission reduction paths,prefabricated buildings in green buildings are taken as the research object.By establishing a carbon emission accounting model,the carbon emissions of prefabricated buildings through-out their entire life cycle are calculated and the distribution relationship of carbon emissions in each stage is an-alyzed.The research results indicate that during the entire lifecycle of prefabricated buildings,the carbon emis-sions during the operating phase are the highest,accounting for approximately 67.09%.Therefore,there is huge room for emission reduction during this stage.The carbon emissions during the production and transpor-tation stages of building materials account for approximately 31.18%of the total carbon emissions throughout the entire Life-cycle.By using quantitative analysis methods to explore the relationship between prefabrication rate and carbon emissions,further explore the relationship between prefabrication level and carbon emissions in each stage of the physico chemical stage.Based on the above research,corresponding emission reduction paths are proposed.