摘要
在全球气候变化且建筑产业能耗相对较大的背景下,节能减排已经成为我国重点关注的问题。围护结构是内外环境热交换的重要通道,其中墙体又是围护结构的重要部分,因此应该作为重点的节能减排对象。基于目前墙体构造以及材料的多样繁杂,选择合适的建筑墙体构造显得尤为重要。通过对现有的生命周期碳排放核算模型的研究,结合墙体构造对建筑整体的影响特点,重新划分全生命周期,借助建筑案例,对一栋位于西安地区的高层建筑附以四种不同规格种类保温材料的两种典型墙体构造,进行全生命周期的碳排放核算,建立针对墙体构造的建筑全生命周期碳排放评价模型。对比不同工况下的全生命周期的碳排放量,得出不同要求下相应的墙体构造方案。研究结果表明:每种外保温墙体构造的碳排放量并不会因保温材料的加厚持续降低,而是存在某一厚度使得其碳排放量最低;自保温墙体构造的砌块厚度越大,碳排放量越低;综合两类墙体构造,自保温墙体构造的减排效果明显优于外墙外保温墙体构造。
Under the background of global climate change and relatively large energy consumption in construction industry, energy saving and emission reduction have become a major concern in China. Envelope structure is an important channel for heat exchange between inside and outside environment, and wall is also an important part of envelope structure. Therefore, it should be regarded as the important energy saving and emission reduction object. However, because of the current wall constructions, building materials are diverse and complicated. It is very important to choose the appropriate building wall constructions. Through the existing life-cycle carbon emission accounting model research, combined with the wall constructions of the overall impact of the characteristics of the building re-divided the whole life cycle, with the help of building cases, two typical wall constructions with four kinds of insulation materials of different specifications and different thickness are attached to a high-rise building located in Xi’an to calculate the carbon emissions of the whole life cycle. The evaluation model of the whole life cycle carbon emission for the wall constructions is established. By comparing the carbon emissions of the whole life cycle under different working conditions, the corresponding wall constructions schemes under different requirements are obtained. The results showed that the amount of carbon emissions from each type of external insulation wall will not be continuously reduced by the thickening of the insulation materials, but there is a certain thickness that causes the lowest carbon emissions,the larger the thickness of the building blocks in the selfinsulating wall, the lower the carbon emissions,the more comprehensive the two types of wall constructions, the emission reduction effect of self-insulation is obviously better than that of external wall constructions.
作者
毛潘
杨柳
罗智星
Mao Pan;Yang Liu;Luo Zhixing
出处
《华中建筑》
2019年第12期32-37,共6页
Huazhong Architecture
基金
中国博士后科学基金面上资助项目(编号：2017M613086)
住房城乡建设部科学技术计划资助项目(编号：UDC2017032312)
陕西省建设厅科技发展计划资助项目(编号：2016-RZ54)
陕西省自然科学基础研究计划-被动式建筑节能减碳效率测算及支持政策研究(编号：2017JM7010)
关键词
生命周期
墙体构造
数值模拟
碳排放
节能减排
Life-cycle
Wall construction
Numerical simulation
Carbon emission
Energy saving and emission reduction
