装配式建筑全寿命周期节能减排效益分析与策略探讨

Benefit Analysis and Strategy Discussion of Energy Saving and Emission Reduction in the Whole Life Cycle of Prefabricated Buildings

以某装配式住宅项目为研究对象,对其全寿命周期节能减排效益给予分析,并就其节能减排策略进行了探讨。结果表明,装配式建筑在资源、能源消耗以及污染物排放各分项的资源环境绩效指数都明显低于社会平均值,具有突出的减排效益;相比于传统的建造方式,装配式住宅的施工过程除了钢材、水泥和煤的节省率是负数,其他各项资源、能源消耗以及污染物排放的节省率均为正值,其中固体垃圾的节省率是最高的,可达59.49%;在装修过程中,装配式住宅也具有明显的节能减排效益,其中水资源可节约81.25%,能耗降低47.48%,维修垃圾减少40%,废水排放降低82%;针对项目设计阶段与施工阶段提出了装配式建筑全寿命周期的节能减排策略。

A prefabricated residential project is analyzed on its life cycle energy saving and emission reduction benefits,as well as its energy saving and emission reduction strategies.The results show that the resource and environmental performance index of prefabricated building in resource,energy consumption and pollutant emission is significantly lower than the social average value,which has outstanding social influence.Compared with the traditional construction method,the saving rate of steel,cement and coal is negative,the saving rate of other resources,energy consumption and pollutant emission are all positive,and the saving rate of solid waste is the highest,up to 59.49%.In the process of decoration,prefabricated houses also have obvious energy saving and emission reduction benefits,in which water resources can be saved by 81.25%,energy consumption can be reduced by 47.48%,maintenance waste can be reduced by 40%,and wastewater discharge can be reduced by 82%.Finally,according to the project design stage and construction stage,this paper proposes the energy saving and emission reduction strategy for the whole life cycle of prefabricated building.