绿色建筑全生命周期成本效益评价

成本效益评价是绿色建筑全生命周期评价的重要内容之一。本文按照成本发生时间对绿色建筑全生命周期内产生的各项成本进行分类,建立绿色建筑全生命周期成本分析模型,其中考虑价格、折现率和非年度周期成本发生时间等因素变动所带来的影响,进而提出绿色建筑全生命周期成本效益评价方法,并对某居住区的节水措施进行全生命周期成本效益评价。评价结果表明:通过有效控制成本并提高节约效益,绿色建筑相对普通建筑的增量成本有可能会在其全生命周期内得到回收,控制管理成本和延长设备使用寿命是实现成本控制的有效途径。

Life cycle cost benefit assessments for green buildings

Cost benefit assessments are important for life cycle assessments of green buildings.This paper categorizes the various costs generated over the whole life cycle of green buildings in terms of the generation time for life cycle cost benefit analyses of green buildings.These consider possible changes of resource prices,the discount rate and the generation time of non-annual costs during the building’s operating phase.The model is then used for cost benefit assessments of green buildings to evaluate the life cycle costs of water conservation facilities of a green residential community.The results show that the incremental cost of a green building compared with a conventional building can be recovered by cost control and savings during its life cycle.Management costs and equipment service lives are both important to effective cost control.