基于生命周期的能源上游清单分析模型改进

对已有清单模型进行改进,提出一种新的能源上游清单模型及算法,使环境负荷因子的清单结果可以追溯到最终端.能源上游清单分析的迭代计算中不但考虑了能源开采、生产阶段,还考虑了运输以及输配等阶段的能耗及环境排放,为能源下游分析乃至整个能源系统的生命周期分析搭建了牢固的基础平台.能源生命周期分析模型包含了生命过程部分和高阶循环部分2个层次.计算结果显示,二次能源如电力的上游阶段生命周期能耗LCEC和生命周期环境排放LCEE较一次能源大,因此调整能源结构,增加清洁、可再生能源在发电方式中所占的比例,对于减少我国大气污染和温室气体排放有重要意义.

Model Improvement of Inventory Analysis on Energy Upstream Phase Based on Life Cycle Assessment

Based on the existing life cycle inventory model,a new model and algorithm of energy upstream is put forward.The results of life cycle inventory therefore can be traced back to the terminal.Life cycle inventory analysis of energy upstream iterative calculations includes energy consumption and environmental emission not only involving mining, production but also transportation and distribution phases, providing a firm foundational platform for not only energy downstream phase but also the whole life cycle analysis of the energy system.Energy LCI model contains two hierarchies: the part of life process and the part of high order cycle.The result shows LCEE and LCEC of secondary energy like power is larger than primary energy.Therefore,adjusting the energy structure and increasing proportion of clean and renewable energy in power generation are significant ways to reduce air pollution and greenhouse gas emissions.