Nowadays research in energy field is focused on conversion technologies which could achieve higher efficiencies and lower environmental impact. In such a context, fuel cells in general and pressurized solid oxide fuel cell (SOFC) hybrid systems are attractive for their high electric efficiency, potential for cogeneration applications, low carbon emissions and high performance at part-load. The aim of this work is to perform the design under uncertainty of an innovative turbocharged hybrid system, where a turbocharger is used to pressurize the fuel cell, featuring better cost effectiveness than a microturbine-based hybrid system at small scales (<100kWe). In this study, a response surface of the plant steady-state performance is developed considering the main operating parameters (fuel cell area, stack current density and recuperator exchange surface) as factors to create the metamodel, taking into account the uncertainties related to the turbocharger efficiency and to the ohmic losses of the fuel cell stack. The optimal economic design of such a turbocharged hybrid system is then analysed at off-design conditions, to preliminary assess the operating costs and profitability within the Italian market scenario considering the variability of fuel and electricity prices. Finally, the impact of uncertainties both on plant performance and economics are discussed, showing that both payback period and internal rate of return present a significant variability, mostly due to the uncertainties related to the prices, showing that a proper evaluation of the evolution of the prices along the years should be performed for a proper economic feasibility analysis.

如今，能源领域的研究集中在可实现更高效率和更低环境影响的转换技术上。在这种情况下，普通的燃料电池和加压固体氧化物燃料电池（SOFC）混合系统因其高电效率，热电联产应用潜力，低碳排放和部分负荷下的高性能而具有吸引力。这项工作的目的是在不确定的创新涡轮增压混合动力系统下进行设计，在该系统中，使用涡轮增压器为燃料电池加压，与小规模（<100kWe）基于微型涡轮的混合动力系统相比，具有更高的成本效益。在这项研究中，考虑到主要运行参数（燃料电池面积，考虑到与涡轮增压器效率以及燃料电池组的欧姆损耗相关的不确定性，电池组电流密度和换热器交换表面）是创建元模型的因素。然后，在非设计条件下分析这种涡轮增压混合动力系统的最佳经济设计，以考虑燃料和电价的可变性来初步评估意大利市场情景下的运营成本和盈利能力。最后，讨论了不确定性对工厂性能和经济性的影响，表明投资回收期和内部收益率均存在显着的可变性，主要是由于与价格相关的不确定性，