产品生命周期评价研究的难点问题分析

ANALYSIS OF DIFFICULTIES IN LIFE CYCLE ASSESSMENT ON PRODUCTS

产品生命周期评价中的主要难点包括:边界定义和目标确定过程中的评价对象的功能单位确定问题;清单分析过程中的评价数据的一致性问题;影响评价过程中的输入(污染源)与其输出(影响结果)之间的非线性关系表达问题;改善分析过程的产品全生命周期多目标优化求解问题。对于产品生命周期评价研究者来说,弄清生命周期评价的难点问题后,将更有助于有针对性地开展相关的研究工作。

Unit function definition in the boundary and goal definition process,coherence of data in inventory process,nonlinear function relationship determination of input( emissions) and output( impact) in impact assessment process,and the multi-objective optimization issue in the improvement analysis process are the four difficulties in life cycle assessment.Understanding the four difficulties in life cycle assessment is of great importance to the life cycle researcher for solving the corresponding problems in the future research.