Life-cycle assessment of a hydrogen-based uninterruptible power supply system using renewable energy

Mori, Mitja; Jensterle, Miha; Mržljak, Tilen; Drobnič, Boštjan

doi:10.1007/s11367-014-0790-6

Cited by 31 publications

(13 citation statements)

References 25 publications

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“…This estimate is tested in the sensitivity study, where we assume 2500 full load hours per year for the part-load operation 51 and include a pressure hydrogen storage to cover one week without intermittent renewable energies. For the construction of the H 2 storage, we only consider the steel demand according to Mori et al 55 Due to the lack of data, we neglect the energy demand to produce the storage unit and the procurement of additional materials or equipment e.g. pumps, compressors, pipes etc.…”

Section: View Article Onlinementioning

confidence: 99%

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO₂-based oxymethylene ether as a drop-in fuel

Deutz

Bongartz

Heuser

et al. 2018

Energy Environ. Sci.

219

177

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Section: View Article Onlinementioning

confidence: 99%

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO₂-based oxymethylene ether as a drop-in fuel

Deutz

Bongartz

Heuser

et al. 2018

Energy Environ. Sci.

219

177

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“…Regarding the use of hydrogen in local energy systems, Usui and Hondo [43] compared the life cycle CO 2 emissions from electricity storage systems for distributed wind power, including hydrogen storage using LH 2 and MCH that was then used in FC-CHP. Mori et al [44] compared the life cycle environmental emissions from a renewable hydrogen-powered uninterruptible power system (UPS) and a UPS powered by an internal combustion engine. However, it should be noted that most of these LCI studies were conducted based on specific assumptions and the mere use or the combinations of the results in previous studies does not make sense due to the differences of methodologies, system boundaries and databases used in each analysis.…”

Section: Introductionmentioning

confidence: 99%

Assessing Uncertainties of Well-To-Tank Greenhouse Gas Emissions from Hydrogen Supply Chains

Ozawa

Inoue²,

Kitagawa

et al. 2017

Sustainability

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Abstract:Hydrogen is a promising energy carrier in the clean energy systems currently being developed. However, its effectiveness in mitigating greenhouse gas (GHG) emissions requires conducting a lifecycle analysis of the process by which hydrogen is produced and supplied. This study focuses on the hydrogen for the transport sector, in particular renewable hydrogen that is produced from wind-or solar PV-powered electrolysis. A life cycle inventory analysis is conducted to evaluate the Well-to-Tank (WtT) GHG emissions from various renewable hydrogen supply chains. The stages of the supply chains include hydrogen being produced overseas, converted into a transportable hydrogen carrier (liquid hydrogen or methylcyclohexane), imported to Japan by sea, distributed to hydrogen filling stations, restored from the hydrogen carrier to hydrogen and filled into fuel cell vehicles. For comparison, an analysis is also carried out with hydrogen produced by steam reforming of natural gas. Foreground data related to the hydrogen supply chains are collected by literature surveys and the Japanese life cycle inventory database is used as the background data. The analysis results indicate that some of renewable hydrogen supply chains using liquid hydrogen exhibited significantly lower WtT GHG emissions than those of a supply chain of hydrogen produced by reforming of natural gas. A significant piece of the work is to consider the impacts of variations in the energy and material inputs by performing a probabilistic uncertainty analysis. This suggests that the production of renewable hydrogen, its liquefaction, the dehydrogenation of methylcyclohexane and the compression of hydrogen at the filling station are the GHG-intensive stages in the target supply chains.

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“…[53] HE2 Alkaline water electrolysis (hydropower) GWP, CED, AP [51] HE3 Alkaline water electrolysis (hydropower) GWP [52] HE4 Alkaline water electrolysis (hydropower) GWP [51] BME1 Alkaline water electrolysis (biomass gasification electricity) GWP [54] RNE1 Alkaline water electrolysis (undefined renewable power) GWP [33] RNE2 Alkaline water electrolysis (undefined renewable power) GWP [55] BMF1 Two-stage fermentation (wheat straw) GWP [55] BMF2 Two-stage fermentation (potatoes peels) GWP [55] BMF3 Two-stage fermentation (sweet stalk) GWP [56] BMF4 Photo-fermentation (sugarcane) GWP, CED [56] BMF5 Dark fermentation (sugarcane) GWP, CED [56] BMF6 Two-stage fermentation (sugarcane) GWP, CED [57] MAF1 Dark fermentation (microalgal sugar) GWP [57] MAF2 Dark fermentation (microalgal sugar) GWP…”

Section: Code Hydrogen Production Process Harmonised Indicatorsmentioning

confidence: 99%

Validation of GreenH2armony® as a Tool for the Computation of Harmonised Life-Cycle Indicators of Hydrogen

2020

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The Life Cycle Assessment (LCA) methodology is often used to check the environmental suitability of hydrogen energy systems, usually involving comparative studies. However, these comparative studies are typically affected by inconsistent methodological choices between the case studies under comparison. In this regard, protocols for the harmonisation of methodological choices in LCA of hydrogen are available. The step-by-step application of these protocols to a large number of case studies has already resulted in libraries of harmonised carbon, energy, and acidification footprints of hydrogen. In order to foster the applicability of these harmonisation protocols, a web-based software for the calculation of harmonised life-cycle indicators of hydrogen has recently been developed. This work addresses—for the first time—the validation of such a tool by checking the deviation between the available libraries of harmonised carbon, energy, and acidification footprints of hydrogen and the corresponding tool-based harmonised results. A high correlation (R2 > 0.999) was found between the library- and tool-based harmonised life-cycle indicators of hydrogen, thereby successfully validating the software. Hence, this tool has the potential to effectively promote the use of harmonised life-cycle indicators for robust comparative LCA studies of hydrogen energy systems, significantly mitigating misinterpretation.

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Life-cycle assessment of a hydrogen-based uninterruptible power supply system using renewable energy

Cited by 31 publications

References 25 publications

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO₂-based oxymethylene ether as a drop-in fuel

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO₂-based oxymethylene ether as a drop-in fuel

Assessing Uncertainties of Well-To-Tank Greenhouse Gas Emissions from Hydrogen Supply Chains

Validation of GreenH2armony® as a Tool for the Computation of Harmonised Life-Cycle Indicators of Hydrogen

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Life-cycle assessment of a hydrogen-based uninterruptible power supply system using renewable energy

Cited by 31 publications

References 25 publications

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO2-based oxymethylene ether as a drop-in fuel

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO2-based oxymethylene ether as a drop-in fuel

Assessing Uncertainties of Well-To-Tank Greenhouse Gas Emissions from Hydrogen Supply Chains

Validation of GreenH2armony® as a Tool for the Computation of Harmonised Life-Cycle Indicators of Hydrogen

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Product

Resources

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Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO₂-based oxymethylene ether as a drop-in fuel

Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO₂-based oxymethylene ether as a drop-in fuel