【摘要】 为研究我国夏热冬冷地区绿色建筑的全生命周期碳排放,选取宁波大学科技服务大楼作为绿色建筑案例,采用基于过程方法与投入产出法相结合,计算全生命周期碳排放,得出其碳排放总量为23 992.799 t CO_2e,碳排放指标为38.51 kg CO_2e·（m²·a）^-1.同时,为探究各类绿色建筑技术的碳减排潜力,提出了基于屋顶、外墙、外窗和空调系统的碳排放计算方法,并分别对屋顶增加光伏板、改变外墙材料、采用不同传热系数外窗,以及改变地源热泵4类技术进行模拟计算.与原绿色建筑碳排放强度相比发现,地源热泵、太阳能光伏板可以提升建筑碳减排潜力,分别能减少8.02%和12.56%的碳排放量;考虑外墙材料隐含碳后,材料的选择对碳排放的影响较大,而外窗传热系数的变化对碳排放影响不明显.更多还原

【Abstract】 An existing green building is selected as case study to study the life cycle carbon emissions of green buildings in hot summer and cold winter zone in China. The total life cycle carbon emissions of 23 992.779 tCO_2e and the average annual carbon emission index per unit area of 38.51 kgCO_2e·（m²·a）^-1 are obtained by combining the process-based method and input-output method. In order to explore the carbon emission reduction potential of various green building technologies, a calculation method for carbon emission reduction of green building technologies based on roof, exterior wall, exterior window and air conditioning system was proposed.The simulations were carried out from four aspects: adding photovoltaic panel roof, changing exterior wall material, adopting exterior window with different heat transfer coefficient, and replacing in situ source heat pump with ordinary air conditioning. The carbon emission intensity of those simulations was compared with that of the original green building. The results show that ground source heat pump and solar photovoltaic panel have better carbon emission reduction potential, which can reduce carbon emissions by 8.02% and 12.56% respectively. Considering the carbon implied by the external wall material, the selection of the material has a great influence on carbon emission, while the change of the heat transfer coefficient of the external window has no obvious influence on carbon emission.更多还原