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Investigation of an integrated hydrogen production system based on nuclear and renewable energy sources: Comparative evaluation of hydrogen production options with a regenerative fuel cell system

机译：基于核能和可再生能源的一体化制氢系统的研究：利用再生燃料电池系统对制氢方案的比较评估

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摘要

Hydrogen has risen as a sustainable and efficient energy carrier option in reducing environmental pollution, and is seen as a potential solution for the current energy crisis. Hydrogen production via water decomposition is a potential process for direct utilization of nuclear thermal energy to increase efficiency and thereby facilitate energy savings. While many of the available renewable energy resources are limited due to their reliability, quality, quantity and density, nuclear energy has the potential to contribute a significant share of energy supply with very limited impacts to climate change. The proposed model in this study is an integrated hydrogen production system combining both nuclear and solar energy sources. This integrated system includes storage of hydrogen and its conversion to electricity by a regenerative fuel cell system when needed. There are many matured water splitting processes that can be linked with the nuclear and solar energy sources to decompose water to its constituents, among which is hydrogen. In this regard, a comparative study is carried out to evaluate an optimal and feasible hydrogen production/storage process with a regenerative fuel cell that can be linked to this integrated system. Studies conducted here on hydrogen production processes show the thermochemical water decomposition to be the better option for producing hydrogen, comparing to electrolysis, due to its high efficiencies and low costs. Energy and exergy efficiencies of various hydrogen production processes, and fuel cell systems are evaluated and compared. Also, a parametric study is conducted on these efficiencies to see the effect of various operating conditions. (C) 2015 Elsevier Ltd. All rights reserved.
机译：氢已成为减少环境污染的一种可持续，高效的能源载体，并被视为当前能源危机的潜在解决方案。通过水分解制氢是直接利用核热能以提高效率并由此促进节能的潜在过程。虽然许多可用的可再生能源由于其可靠性，质量，数量和密度而受到限制，但核能有潜力在能源供应中占很大比重，而对气候变化的影响非常有限。在这项研究中提出的模型是一个结合了核能和太阳能的综合制氢系统。该集成系统包括氢气的存储以及在需要时通过可再生燃料电池系统将其转化为电能。有许多成熟的水分解过程可以与核能和太阳能一起使用，以将水分解成其成分，其中包括氢。在这方面，进行了一项比较研究，以评估可以与该集成系统连接的可再生燃料电池的最佳可行氢气生产/存储过程。此处进行的有关制氢过程的研究表明，与电解相比，热化学水分解法是生产氢的更好选择，这是因为其效率高且成本低。评估并比较了各种制氢工艺和燃料电池系统的能效和火用效率。此外，针对这些效率进行了参数研究，以了解各种运行条件的影响。 （C）2015 Elsevier Ltd.保留所有权利。

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