基于LCCA的既有居住建筑节能改造成本效益分析

为了对既有居住建筑节能改造的成本效益问题进行分析,首先运用全寿命周期成本理论分析既有居住建筑节能改造的增量成本与增量效益构成;再运用建筑能耗基本公式推导节能改造增量经济效益测算模型,并通过数学推导证明热源热网节能改造的经济效益要远好于建筑围护结构节能改造的经济效益;最后,运用增量经济效益测算模型和项目经济评价理论对实际案例的成本效益进行分析,计算结果表明:仅进行建筑围护结构节能改造存在投资额大、收益率低的特点,而仅进行热源热网节能改造本身投资收益水平较好。由此可见,建筑围护结构节能改造本身无法吸引社会资金投资,需要政府给予更多的经济激励才能吸引社会资金;而热源热网节能改造在政府适当的经济激励下能够通过市场进行改造资金筹措。

Cost-benefit analysis of energy efficiency improvement of existing residential buildings in heating regions based on LCCA

In order to analyze the costs and benefits of Energy Efficiency Improvement(EEI) of Existing Residential Buildings(ERB),the increment costs and economic benefits of EEI on ERB are first analyzed using Life Cycle Cost Analysis(LCCA),then a set of formulas for computing the increment economic benefits of EEI on ERB are derived based on building energy consumption theories.The calculations show that the economic benefits of EEI on heating production plant and heating networks are much better than that of EEI o...