ABSTRACT

The results of theoretical studies of the possibilities of using hybrid solid oxide fuel cell–gas turbine (SOFC-GT) systems for marine power plants are presented. A 500 kW auxiliary marine power plant scheme using stacks of SOFCs in combination with a regenerative gas turbine operating with over-expansion based on our recent patent application is proposed. The results of mathematical modelling showed the opportunity to obtain a hybrid scheme efficiency of about 55% with the optimal values of the gas turbine compression ratio 2.0–2.2 and the exhauster compressor ratio 1.3–1.4. The application of the considered hybrid SOFC-GT system gives an increase in electrical efficiency by 19% in comparison with a cycle without a gas turbine. The aerodynamic structure of chemically reacting flows in a combustor is determined, as well as the features of the formation of toxic components during the combustion of SOFC off-gas with very low heating value.

摘要

提出了在船舶电厂中使用混合固体氧化物燃料电池-燃气轮机（SOFC-GT）系统的可能性的理论研究结果。根据我们最近的专利申请，提出了一种500 kW的辅助海上发电站方案，该方案使用SOFC的烟囱结合可过度膨胀运行的可再生燃气轮机。数学建模的结果表明，在燃气轮机压缩比为2.0–2.2和排气压缩机比为1.3–1.4的最佳值的情况下，可以获得约55％的混合方案效率的机会。与没有燃气轮机的循环相比，所考虑的混合式SOFC-GT系统的应用使电效率提高了19％。确定燃烧室中化学反应流的空气动力学结构，