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Techno-economic assessment of reversible Solid Oxide Cell integration to renewable energy systems at building and district scale

机译：技术经济评估在建筑物和区规模中对可再生能源系统的可逆固体氧化物细胞集成

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Hydrogen is assuming a crescent role in the decarbonising initiatives. Moreover, hydrogen can supply the 3 most energy intense sectors, i.e. transport, heat and electricity, allowing the sector coupling. To do so, a production unit, the electrolyser, and a consumer one, the fuel cell, are needed. Actually, reversible Solid Oxide Cell technology presents the possibility to install only one device acting bi-directionally. It offers different advantages thank to its (i) compact design, thus ensuring space and cost savings; (ii) ability to meet thermal and electric demand, thus reducing emissions in both those sectors; (iii) possibility to store, the electricity excess coming from renewable sources in form of hydrogen, ensuring an unlimited and seasonal storage possibility. In this study, the deployment of a real reversible Solid Oxide Cell was simulated in different scenarios considering the data recorded in one year in the island of Procida, Italy. Up to date, the use of this technology was mostly relegated to the industrial sector or to prototype tests. While, this research aimed to analyse the functioning of near commercialization technology in civil environments such as hotels, offices and hospitals to understand its feasibility in this new context. It wants to be proved that advantages of this emerging technology can be exploited as well in the civil environment. Three economic indicators, i.e. Payback Period, Internal Return Rate and Net Present Value were selected to evaluate the simulated scenarios, while, the primary energy saving, the emission reduction and its storage efficacy were studied to evaluate the environmental achievements. To perform the simulations, the MATLAB model ConfigDym built by Sylfen was used. Finally, a sensitivity analysis in terms of economics was carried out. The results show an important decrease in emissions and an energy selfsufficiency increase of at least 29% and 58% respectively, differently the economic analysis returns a payback period currently near to its lifetime, while for the future a three years period is reachable.
机译：氢假设在脱碳举措中的新月作用。此外，氢气可以提供3个最能量的强烈扇区，即运输，热量和电力，允许扇形耦合。为此，需要生产单元，电解器和消费者，燃料电池。实际上，可逆的固体氧化物电池技术呈现仅安装一个双向作用的一个设备的可能性。它提供了不同的优势，谢谢其紧凑的设计，从而确保了空间和成本节省; （ii）满足热电需求的能力，从而减少这些部门的排放; （iii）储存的可能性，以氢气形式来自可再生来源的电力，确保无限制和季节性的储存可能性。在这项研究中，考虑到意大利Procida岛的一年内记录的数据，模拟了实际可逆固体氧化物细胞的部署。迄今为止，使用该技术主要被降级到工业部门或原型测试。虽然，这项研究旨在分析酒店，办公室和医院在民用环境中接近商业化技术的运作，以了解其在这一新背景下的可行性。它希望证明，这种新兴技术的优势也可以在民用环境中开发。三个经济指标，即回收期，内部回报率和净目前的价值被选为评估模拟情景，虽然研究了初级节能，减排及其储存效能，以评估环境成果。要执行模拟，使用Sylfen构建的Matlab Model ConfigDym。最后，进行了经济学方面的敏感性分析。结果表明，排放量度的重要性和能源又增加了至少29％和58％，不同的经济分析返回目前靠近其寿命的投资回收期，而未来为期三年即可到达。

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