燃料电池-燃气轮机混合发电系统性能研究

文章对由燃料电池和燃气轮机组成的混合发电系统的性能进行了分析。该混合系统采用的是底层循环方式,并于常压下工作。分析表明,在设计点工况,混合系统的发电效率为58.7％;在非设计点工况,其发电效率也能达到56%以上。在设计点工况下,混合系统的功率约有80％来自燃料电池电堆,20%由燃气轮机提供。在非设计点工况时,燃料电池发电功率占混合系统总输出功率的比例随着混合系统输出功率的减少而增大;混合系统可以在其输出功率不低于设计点功率80%的工况下运行。

Performance Analysis of a Hybrid System Based on a Fuel Cell and a Gas Turbine

This paper addresses the performance analysis of a fuel cell-gas turbine hybrid system. It is a "bottoming cycle" system at the standard atmospheric condition. The calculation results show that the efficiency of hybrid system (HS) is about 58.8% at design point and always over 56% at part load condition. At design point, about 80% net power coming from the stack and 20% from the gas turbine. At part load condition, the contribution of MCFC increases. The hybrid system works steadily when its net power is above 80% of its nominal power.