围护结构或被动式建筑的绿色性评价方法

以湖南地区5栋公共建筑为研究对象,基于全寿命期理论以及方法,分别计算了其全寿命期(即从围护结构形成阶段到拆除全过程)的建筑能耗、耗、二氧化碳排放量以及成本.在此基础上,引入各个建筑的能比和绿色性两项指标.采用层次分析法,得到建筑的绿色性指标,并对各个建筑的绿色性指标进行对比分析,结果表明,办公建筑的绿色性明显优于商业建筑.两个指标的交叉对比结果表明,能比存在一个最优的范围.能比反映建筑对优质能源的利用或消费程度,绿色性指标综合考虑了建筑全寿命期的资源消耗、成本投入和环境影响,因而这两项指标可作为现有可持续建筑评价体系中被动式节能条款的补充,具有一定合理性.

Greenness Evaluation Method for Building Envelope orPassive Buildings

The energy consumption,exergy consumption,CO 2 emissions and cost of five public buildings in Hunan area in its life cycle were calculated based on life cycle theory and exergy method,taking into account the formation of building envelope. On this basis,two indicators including the building exergy-energy ratio and greenness were introduced. The greenness of each building was obtained by analytical hierarchy process. The comparison of the greenness indicators shows that office buildings are much better than commercial buildings in terms of greenness. Comprehensive comparison of the two indicators illustrates that there is an optimal range for exergy-energy ratio. The greenness indicator takes into account the building life cycle resources consumption,cost input and environmental impacts,and the exergy-energy ratio demonstrates the use of high quality energy. Therefore,these two indicators can serve as a supplement to the passive energy saving clauses in the existing sustainable building assessment systems.