电动自行车与燃油助动车生命周期评价的比较

Comparison of Life Cycle Assessment Between E-bike and Motorbike

对上海市在用的电动自行车和燃油助动车进行了生命周期评估。结果表明:在整个生命周期中,虽然电动自行车比二冲程燃油助动车消耗较少的能量,排放较少的GWP(温室气体)、BOD、GOD、悬浮物(SS)、可溶固形物(DS)和碳氢化合物(HC)。但是计入火力发电过程,电动自行车比燃油助动车产生更多的固体废物,排放更多的引起酸雨(AP)的SO2和更多的重金属离子。因此,并不是在所有的方面电动自行车都比燃油助动车好。

This study conducted a life cycle assessment (LCA)both on electric bike( e-bike) and gasoline-powered motorbike in Shanghai. The LCA results indicated that the e-bike consumes less energy than the motorbike with two-stroke gasoline engine during its life cycle,and emits less GWP into air,and less BOD, ODD, Suspended Solids(SS), Dissolved Solids(DS) and Hydrocarbons(HC)into water. On the other hand, it generates more solid wastes, acidification potential(AP), and Heavy Metals(HM)than the motorbike, due to electric power production. Therefore,e-bike is not better than the motorbike in all environment categories.