A parametric life cycle assessment model for ductile cast iron components

被引：9
|
作者：
Zhu, Yongxian [1 ]
Keoleian, Gregory A. [2 ]
Cooper, Daniel R. [1 ]
机构：
[1] Univ Michigan, Mech Engn Dept, George G Brown Lab, 2350 Hayward St, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Ctr Sustainable Syst, Sch Environm & Sustainabil, 440 Church St, Ann Arbor, MI 48109 USA
来源：
RESOURCES CONSERVATION AND RECYCLING | 2023年 / 189卷
关键词：
Life cycle assessment; Eco-design; Recycling; Sustainable manufacturing;
D O I：
10.1016/j.resconrec.2022.106729
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Life cycle assessment (LCA) is widely used to evaluate product environmental impacts, while detailed LCAs are missing that model the effect of design and manufacturing decisions on U.S. ductile iron casting environmental impacts. We develop a parametric LCA model by collecting inventory data from 11 foundries (26% of U.S. production) and literature to quantify the impact of design and manufacturing decisions on the product's cu-mulative energy demand (CED) and global warming potential (GWP). The model reveals the cradle-to-gate CED and GWP of U.S. ductile iron products at 24-50 MJ/kgproduct (mean: 37 MJ/kgproduct) and 1.6-3.0 kg.CO2eq./ kgproduct (mean: 2.2 kg.CO2eq./kgproduct). A Sobol-indices sensitivity analysis revealed the factors that have the greatest effect in reducing these environmental impacts: casting yield, electricity grid, recycled content, and furnace technology. A comparative whole life cycle analysis of automotive ductile iron applications versus forged steel, stamped steel and aluminum alternatives highlights the design and manufacturing conditions that mini-mize life cycle impacts.
引用
收藏
页数：9
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