辽宁农村住宅全生命周期碳排放量分析

The Research of Whole Life Cycle Emissions Analysis of Rural Residential in Liaoning

目的研究农村低层住宅全生命周期CO2排放量的规律,探寻农村节能减排,保护环境可持续发展的途径.方法选取辽宁省典型农村住宅案例,在全生命周期理论基础上,对农村住宅全生命周期的CO2排放量进行计算,对建筑材料生产、建造施工与运输、建筑使用、废旧拆除与处理5个阶段产生的CO2进行量化的分析.结果辽宁农村住宅建筑材料生产阶段CO2排放量P1为60.09 t,建造施工与运输阶段CO2排放量P2为4.07 t,建筑使用阶段以50 a计算CO2排放量P3共计612.5 t,废旧拆除阶段CO2排放量P4为3.66 t,建筑物废料回收和废物处理阶段的CO2排放量P5为1.53 t.其中使用阶段CO2排放量最高.结论降低使用阶段的CO2排放量是农村低碳住宅设计的关键.提高建筑的使用寿命,延长建筑使用周期,加强建筑外维护结构保温,采用合理的供暖方式是有效降低农村住宅CO2排放的必要手段.

The paper studies on rural residential life cycle of CO2 emissions rules, explores the rural energy- saving emission reduction, and protects environment sustainable development. Liaoning province, a typical rural residence in the case is chose. Based on the theory of life cycle, on the calculation and analysis of CO2 emissions to the rural housing, for the processes of building materials, construction analysis of construction and transportation, construction, waste removal and treatment to calculate five phases CO2 emission quantity. Calculated the Liaoning rural residential building materials production stage P1 is 60.09t, construction and transportation stages of P2 is 4.07 t,using the stage of construction to 50 years calculated P3 total is 612.5 t, waste removal phases is 3.66t, CO2 emissions building waste material recycling and waste processing stage is 1.53 t. The use of the highest stage, therefore, to reduce CO2 emissions is the stage of rural key low carbon residential design. Conclusion improves the life of the building, extends the construction period, and strength- ens the building maintenance structure heat preservation. The reasonable heating way is to effectively reduce the necessary means of rural residential CO2 emissions.