节能建筑全寿命周期成本研究

RESEARCH ON FULL LIFE CYCLE COST OF ENERGY-SAVING BUILDING

通过对建筑产品生命期能耗成本评估分析,建立现金流的寿命期经济效益分析模型。结合工程实例,运用造价和经济原理计算分析节能投入前后建筑物寿命期费用变化,从技术、经济和管理角度分析,得出同寿命期时,总成本现值随折现率的增大而减小,总成本年值随折现率的增大而增加;相同折现率时,总成本现值随寿命期的增大而增加,实证了优化建筑能耗带来的寿命期收益。

Service life economic benefit analysis model analysis on energy consumption cost of building product for cash flow is established through evaluation and in its life cycle. Based on practical engineering project, construction cost and economic principle are used to calculate and analyze the expense changes within building life cycle before and after energy saving technique is used. After analysis on technical, economic and management aspects, it is obtained that the present value of total cost is in inverse proportion to the discounting rate and annual value of total cost is in direct proportion to the discounting rate within the same life cycle; when the discounting rate is same, the present value of total cost is in direct proportion to the lift cycle. This verifies that life cycle benefit may be obtained through optimization of building energy consumption.