Abstract This article proposes an innovative distributed hybrid power system where the biomass gasification technology is integrated with the molten carbonate fuel cell, an externally fired gas turbine, and a supercritical carbon dioxide cycle. The thermodynamic, economic and environmental performances of the proposed system are extensively studied to show the impact of the main operational and design parameters. The proposed small capacity hybrid power system yields the highest energy efficiency of 40.88%, which is close to the efficiency level of the large-scale biomass gasification based combined cycle system. The maximum exergetic efficiency of the proposed power system is estimated to be around 34.07%. The biomass gasifier (31.79%) contributes the highest amount of exergy destruction, followed by the primary heat exchanger (15.97%), combustion chamber (14.01%) and the molten carbonate fuel cell (12.53%) unit. The sensitivity analysis reveals that the cost of electricity can reach up to 0.1057 $/kWh. A comparative performance analysis, among other biomass-fueled power generation systems suggests that the developed power system yields better techno-economic performance than the other previously proposed system configurations. The environmental analysis reveals that the proposed plant can reduce maximum up to 1510 ton of CO2/year, which yields an environmental benefit of 21,901 $/year, in comparison to a fossil fuel-based plant of similar capacity.

中文翻译：

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结合熔融碳酸盐燃料电池、外燃式燃气轮机和超临界二氧化碳循环的生物质燃料分布式混合能源系统的性能评估

摘要 本文提出了一种创新的分布式混合动力系统，将生物质气化技术与熔融碳酸盐燃料电池、外燃式燃气轮机和超临界二氧化碳循环相结合。对该系统的热力学、经济和环境性能进行了广泛研究，以显示主要操作和设计参数的影响。所提出的小容量混合动力系统的最高能效为40.88%，接近于大规模生物质气化联合循环系统的效率水平。拟议电力系统的最大火用效率估计约为 34.07%。生物质气化炉（31.79%）的火用破坏量最大，其次是初级换热器（15.97%），燃烧室 (14.01%) 和熔融碳酸盐燃料电池 (12.53%) 单元。敏感性分析表明，电力成本最高可达 0.1057 美元/千瓦时。与其他生物质燃料发电系统相比，性能比较分析表明，与之前提出的其他系统配置相比，开发的电力系统产生了更好的技术经济性能。环境分析表明，与类似容量的基于化石燃料的工厂相比，拟议的工厂最多可以减少 1510 吨二氧化碳/年，产生 21,901 美元/年的环境效益。在其他以生物质为燃料的发电系统中，表明开发的电力系统比之前提出的其他系统配置具有更好的技术经济性能。环境分析表明，与类似容量的基于化石燃料的工厂相比，拟议的工厂最多可以减少 1510 吨二氧化碳/年，产生 21,901 美元/年的环境效益。在其他以生物质为燃料的发电系统中，表明开发的电力系统比之前提出的其他系统配置具有更好的技术经济性能。环境分析表明，与类似容量的基于化石燃料的工厂相比，拟议的工厂最多可以减少 1510 吨二氧化碳/年，产生 21,901 美元/年的环境效益。