建筑供热供冷系统生命周期能耗和碳排放案例分析

Case Study on Life-cycle Energy Consumption and Carbon Emissions of Building Heating and Cooling Systems

根据文献“区域建筑能源系统生命周期能耗及碳排放的测算模型”中的模型,选择了大连地区2个区域集中供热系统B01、B02和9个公共建筑供热供冷系统B03～B11作为计算实例对其生命周期内的能耗、碳排放和经济性进行了量化剖析.结果表明：B01和B02生命周期碳排放分别为743.60 kg/m^2、620.98 kg/m2,B03～B11生命周期碳排放为800.15～1 377.85kg/m2;系统设备生产、安装等阶段隐含能耗和碳排放比例达到6％～14％;我国寒冷地区一些可再生能源在建筑领域的应用,虽然达到一定的节能减排效果,但生命周期内碳减排成本较高,远远高于我国碳税;影响碳减排成本的3种因素中,影响权重分别是电力价格＞设备运行效率＞电力碳排放因子.

2 district central heating systems B01 and B02 for residential buildings and 9 heating and cooling systems Bo3 -Bll for public buildings＇ energy, carbon emissions and economy were quantitative analyzed in Dalian based on the model ＇Measurement and Counting Model on Life-Cycle Energy Consumption and Carbon Emission of Regional Building Energy System＇. The results show that B01 and B02 life-cycle carbon emissions were 743.60 kg/ m^2, 620.98 kg/m^2, B03 - B11 life-cycle carbon emissions were 800. 15 - 1 377. 85 kg/m^2. The proportion of embodied energy and carbon emissions with equipment production, installation and other stage reached 6% ~ 14%. The application of some renewable energy reaches a certain effect of energy conservation and emissions reduction in building field in cold region, but the life cycle cost of emission reduction is much higher than carbon tax in china. The influence factors weight of the carbon reduction cost respectively are power price, equipment efficiency and the carbon emission factor of power.