Life Cycle Carbon Emission Calculation of Exterior Wall Materials of Typical Ultra-low Energy Consumption Residential Buildings in Anhui Province
Through the investigation of ultra-low energy consumption residential buildings in Anhui province,the common thermal insulation forms and thermal insulation materials are summarized,and 7 typical exterior wall structures are obtained in combination with actual projects.From the perspective of the whole life cycle,the carbon emissions of these 7 kinds of external wall structures in the building materials production stage,building materials transportation stage,external wall construction stage,external wall maintenance stage and external wall demolition stage were measured.The results show that the carbon emissions in building materials production stage account for the largest proportion,reaching more than 70％of the total carbon emissions.The total carbon emission of assembled type is about 6％lower than that of non-assembled type.The total carbon emissions of internal and external composite insulation walls are the largest,which is more than 18％higher than that of sandwich insulation+external insulation walls,and more than 11％higher than that of external insulation walls.Different insulation materials and wall materials have less impact on the total carbon emissions of the external wall.Through analysis and comparison,the optimal external wall structure with carbon emission is obtained,which provides basis and method for carbon reduction from the perspective of building materials.
ultra-low energy consumption residential buildingexterior wall materiallife-cyclecarbon emission
NETL
NSTL
万方数据
