概括
以谷物为基础的Gasohol (10%的乙醇,90%的汽油) 显示了非可再生能源的近乎能量平衡. 然而,当考虑石油或可替代能源时,它是明确的能源生产者.
科学领域:
- 能源分析 能源分析
- 可再生能源是可再生的能源.
- 生物燃料是一种生物燃料.
背景情况:
- 对生物燃料的能源平衡评估是复杂的.
- 方法上的差异导致了关于 gasohol 能效的不同结论.
- 关于作物残留物使用和燃料效率的假设对结果产生重大影响.
研究的目的:
- 为了进行基于谷物的气醇的详细的能量输入/输出分析.
- 为了澄清现有的天然气能源平衡研究中的差异.
- 在不可再生能源和可替代石油能源方面评估gasohol的能源性能.
主要方法:
- 基于谷物的天然气生产的综合能源输入和输出会计.
- 基于不同假设的作物残留物利用的比较分析.
- 评估燃油效率指标 (英里/加) 的气体.
主要成果:
- 关于非可再生能源总投入,Gasohol 接近能源收支平衡点.
- 在考虑石油或石油可替代能源时,Gasohol显示出正能量平衡.
- 像煤炭这样的非石油来源可以提供大多数能源投入.
结论:
- 气体的能量平衡对分析假设非常敏感.
- 当被视为石油的替代品时,Gasohol提供了净正能量输出.
- 该研究强调了在生物燃料评估中定义能源类型 (非可再生能源与石油) 的重要性.
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