液态:航空气候灾难的幻影还是有力的解决方案?
T Reed Miller1,2, Marian Chertow2, Edgar Hertwich3
1Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
Environmental science & technology
|June 23, 2023
概括
液态 (LH2) 显示了减少航空运输的潜力.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 可持续的航空燃料
背景情况:
- 航空业面临着重大的气候影响挑战.
- 航空旅行的增长需要可持续的替代燃料.
- 液态 (LH2) 是一个潜在的碳中和飞机燃料候选人.
研究的目的:
- 为了进行LH2.2.的良好的觉醒生命周期评估.
- 为了比较各种生产路线对气候的影响与传统的喷气式燃料和生物燃料.
- 评估不同的航空燃料场景的每位乘客距离对环境和健康的影响.
主要方法:
- 生命周期评估 (LCA) 的方法.
- 对17种气生产途径和传统燃料的分析.
- 模拟波音787-800飞机在各种飞行距离上的气候影响 (CO2和非CO2).
主要成果:
- 对于LH2来说,螺旋环的影响明显高 (81%),而不是传统燃料 (32%).
- 主要的商业LH2路径显示生命周期影响比传统喷气式燃料大8-121%.
- 新型LH2路线提供了高达-205%的潜在降低,而可再生LH2则显示最佳情况下降低了-67%.
结论:
- 燃烧LH2对气候的影响,特别是来自合流环的气候影响,需要进一步研究.
- 虽然一些LH2路径显示出希望,但目前的商业路线超过了传统燃料的影响.
- 可再生能源衍生的LH2不是气候中立的,但与传统喷气式燃料相比,它可以显著减少生命周期.
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