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| Applying EnIR and EvIR to optimize energy efficient retrofit plans for existing residential buildings in China |
| OUYANG Jin-long1,2, WANG Chun-yuan1, MAO Wei1,3, DENG Xiao-yan1 |
| 1. Department of Architecture, Sichuan University, Chengdu 610065, China; 2. State Key Lab of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; 3. China CTDI Engineering Corporation, Chongqing 40039, China |
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Abstract Abstract: To achieve maximum energy saving and environmental benefits with limited investment cost for authorities, ratio of energy saving benefit to investment cost (EnIR) and ratio of environmental benefit to investment cost (EvIR) were proposed to optimize energy efficient residential retrofit plans. The approach of EnIR and EvIR was thereafter applied to a case building in Hangzhou city. The results show that the EnIR and EvIR can not only select optimum energy saving measurements, but also guide for best cost-effective plan of energy-efficient retrofitting. Based on the optimum plan for the case building, every 1RMB￥investment cost saves 15.04 MJ energy and reduces 1.13 kg CO2 emission.
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Published: 01 August 2014
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利用EnIR和EvIR优化既有住宅节能改造方案
为了帮助我国政府在既有住宅节能改造中以有限经济投资获取最大的节能和减排收益,建立节能、减排收益与经济投资比值（EnIR、EvIR）的方法,用于优化节能改造方案.以杭州某建筑为案例,讨论EnIR和EvIR在既有住宅节能改造方案设计中的使用方法和优化作用.结果表明：由于很好地反映我国政府在既有住宅节能改造中的多重角色,采用EnIR和EvIR方法不仅可优选和优化节能措施,还可制定出“性价比”最佳的节能改造方案；以最佳方案对案例建筑实施节能改造,每1元的经济投资可获15.04 MJ的节能收益和1.13 kgCO2的减排收益.
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