基于金属铝水反应的固体氧化物燃料电池/氦氙布雷顿循环动力系统研究

为提高闭式动力装置续航,本文建立了一种基于金属铝水反应的闭式布雷顿循环与固体氧化物燃料电池(solid oxide fuel cell,SOFC)联合动力装置。本文以100 kW为输出功率为设计目标进行数学模型的建立,通过布雷顿循环与SOFC循环换热特点进行迭代分析,分别以最大化铝水放热量和提高铝水反应热品质为目标搭建了两个动力系统,并确定了联合动力装置的功率分配和主要参数的设计。结果表明：以提高铝水反应热品质为目标的系统在效率和能量密度方面更具优势。SOFC输出功率占50.98kW,布雷顿循环占49.13kW,系统发电效率为40.02%。

Solid Oxide Fuel Cell/Helium-Xenon Brayton Cycle Power System Based on Aluminum Water Combustion

In order to improve the endurance of the closed power system, this paper proposed a combined power system, which is based on the Aluminum-Water reaction and consists of closed Brayton cycle and Solid Oxide Fuel Cell (SOFC). The established mathematical model took 100kW output power as the design target, iteratively analyzed the system parameters through the heat transfer characteristics of the Brayton cycle and the SOFC cycle. The paper built two power systems, which the goals were to maximize the heat release of the Aluminum-Water reaction and improve the quality of the reaction heat of the Aluminum-Water reaction, and determine the power distribution and main parameter design of the combined power system. The results show that the system aimed at improving the heat quality of the aluminum-water reaction had more advantages in terms of efficiency and energy density. The output power of SOFC is 50.98kW, the Brayton cycle is 49.13kW, and the power generation efficiency of the system is 40.02%.