The technical potential for reducing metal requirements through lightweight product design
The technical potential for reducing metal requirements through lightweight product design
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DOI：
10.1016/j.resconrec.2011.09.018
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发表时间：
2011-12-01
影响因子：
13.2
通讯作者：
Moynihan, Muiris C.
中科院分区：
文献类型：
--
作者：
Carruth, Mark A.;Allwood, Julian M.;Moynihan, Muiris C.
金属生产消耗了全球约10%的能源，因此是气候变化和其他可持续性问题的重要驱动因素。由于发展中国家不断增长的总需求和发达经济体持续的替代需求，对金属的需求正在上升，预计到2050年将翻一番。金属生产已经非常有效，因此该部门减少排放的主要机会可能来自材料效率-使用更少的新金属来满足服务需求。因此，本文探讨了通过轻量化设计来减少对钢和铝的要求的机会。通过一个简单的分析例子，提出了一套轻量化设计的一般原则，然后应用于五个案例研究产品，这些产品累计占全球钢铁产品产量的30%。研究表明，仅利用这五种产品的轻量化设计机会就可以将全球钢铁需求减少5%，而铝产品的类似节省可以将全球铝需求减少7%。如果在所有的钢和铝产品中都可以实现与设计案例研究中类似的节省，那么总材料需求可以减少25-30%。然而，这些轻量级措施中有许多目前在经济上没有吸引力，可能需要许多年才能实施。(C) 2011 Elsevier B.V.版权所有
Metal production consumes around 10% of all global energy, so is a significant driver of climate change and other concerns about sustainability. Demand for metal is rising and forecast to double by 2050 through a combination of growing total demand from developing countries, and ongoing replacement demand in developed economies. Metal production is already extremely efficient, so the major opportunities for emissions abatement in the sector are likely to arise from material efficiency - using less new metal to meet demand for services. Therefore this paper examines the opportunity to reduce requirements for steel and aluminium by lightweight design. A set of general principles for lightweight design are proposed by way of a simple analytical example, and are then applied to five case study products which cumulatively account for 30% of global steel product output. It is shown that exploiting lightweight design opportunities for these five products alone could reduce global steel requirements by 5%, and similar savings in aluminium products could reduce global aluminium requirements by 7%. If similar savings to those in the design case studies were possible in all steel and aluminium products, total material requirements could be reduced by 25-30%. However, many of these light-weighting measures are, at present, economically unattractive, and may take many years to implement. (C) 2011 Elsevier B.V. All rights reserved.