Exergy and Environmental Analysis of a Bio-Hydrogen Supply Chain Using Data Envelope Analysis
Exergy and Environmental Analysis of a Bio-Hydrogen Supply Chain Using Data Envelope Analysis
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DOI：
10.1007/978-981-15-6775-9_35
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发表时间：
2020
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影响因子：
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通讯作者：
D. Hara;Chiharu Misaki;Hiromu Sugihara;Seiya Kako;N. Katayama;K. Dowaki
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文献类型：
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作者：
D. Hara;Chiharu Misaki;Hiromu Sugihara;Seiya Kako;N. Katayama;K. Dowaki
氢是一种很有前途的燃料电池（FC）移动性使用燃料，因为它具有高能量密度和在移动性操作阶段使用时缺乏二氧化碳排放。此外，生物质衍生的氢是碳中性的，是一种有吸引力的燃料，因为它的使用可以减少制氢阶段的二氧化碳排放。然而，由于生物质原料的能量密度低，它们首先必须有效地转化为氢；一个有效的氢利用路径，包括氢的储存和迁移以及不同规模迁移的FC利用，同时考虑到环境影响和所需的能源。本研究通过生命周期评估和火用分析对整个氢路径（制氢、储氢和流动）进行了研究，确定了相应的环境和火用热点以及有效的氢路径。为了比较不同类型的功能迁移，我们使用了数据包络分析。研究发现，金属氢化物（MH）的利用是减轻氢燃料对环境造成的破坏和有效利用生物质原料的重要因素。此外，还指出，必须减少MH和FC中的贵金属，以减轻对环境的影响。
Hydrogen is a promising fuel for fuel cell (FC) mobility use, given its high energy density and the lack of CO2emission from its use during the operating stage of mobility. In addition, biomass-derived hydrogen, which is carbon neutral, is an attractive fuel because its use can mitigate CO2emission during the hydrogen production stage. However, because of the low energy density of biomass feedstocks, they first must be effectively converted to hydrogen; an effective hydrogen use path, including hydrogen storage and mobility and FC utilization for different scale mobility, that takes into consideration the environmental impacts and exergy is needed. In this study, the entire hydrogen path (hydrogen production, hydrogen storage, and mobility) was investigated using life cycle assessment and exergy analysis to determine the corresponding environmental and exergy hotspots and an effective hydrogen path. To compare various types of functional mobility, data envelope analysis was used. It was found that metal hydride (MH) utilization was an important factor in the mitigation of environmental damages caused by using hydrogen as fuel and in the effective use of biomass feed feedstock. Also, it was indicated that the reduction of precious metals in MH and FC would be necessary to mitigate environmental impacts.