Counting the cost of carbon in bioenergy systems: sources of variation and hidden pitfalls when comparing life cycle assessments
Counting the cost of carbon in bioenergy systems: sources of variation and hidden pitfalls when comparing life cycle assessments
复制标题
计算生物能源系统中的碳成本：比较生命周期评估时的变异来源和隐藏陷阱
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
G. Taylor
中科院分区：
文献类型：
--
作者：
R. Rowe;J. Whitaker;P. Freer;J. Chapman;S. Ryder;K. Ludley;D. Howard;G. Taylor
来自生物质的能源是可再生的，能够提供热量、电力或液体燃料。与化石燃料相比，对这些可再生燃料的生命周期评估往往显示出正的能源平衡和温室气体节省。然而，不同的研究之间存在很大的差异，并不是所有的研究都是积极的，导致最近的报告质疑生物能源的长期可持续性。通过对与在温带气候中种植的原料相关的生命周期评估(三项针对热能和电力，八项针对液体生物燃料)的系统审查，我们定义了这些变异来源，突出了不确定领域和未来研究的优先事项。此外，我们还探讨了比较生物能源和生物燃料生产链及其化石燃料当量的挑战，并演示了如何以公平和一致的方式做到这一点。
Energy from biomass is renewable and capable of providing heat, power or liquid fuels. Life cycle assessments of these renewable fuels have often shown positive energy balances and GHG savings, relative to fossil fuels. There are, however, large variations between studies and not all are positive, leading to recent reports questioning the long-term sustainability of bioenergy. Using a systematic review of life cycle assessments relevant to feedstocks grown in a temperate climate (three for heat and power and eight for liquid biofuels) we have defined these sources of variation, highlighting areas of uncertainty and priorities for future research. In addition, we have explored the challenges in comparing bioenergy and biofuels production chains and their fossil fuel equivalents and demonstrated how this can be done in a fair and consistent manner.