文提出了一种新型的用于电解镁生产的燃料电池发电系统，研究了燃料流量和燃料利用率对系统性能的影响，同时在设计工况下对系统的能量平衡和火用平衡进行了分析。研究表明：在设计工况下，系统的热效率为6924%，质子交换膜燃料电池（Proton Exchange Membrane Fuel Cell，PEMFC）电堆的发电效率和系统发电效率分别为39.34%和33.42%；当燃料流量从1.0 mol/s提高到13 mol/s时，电堆的发电功率从95.14 kW增加到119.95 kW，电堆的发电效率从39.34%提高到43.05%。当燃料利用率从0.65提高到0.95时，电堆发电功率从67.93 kW增加到95.14 kW；电堆发电效率从28.09%提高到39.34%。

A new type of fuel cell power generation system for the production of electrolytic magnesium was proposed, the effects of fuel flow rate and fuel utilization rate on the performance of the system were studied, and the energy balance and exergy balance of the system were analyzed under design conditions. The results show that the thermal efficiency of the system is 69.24%, the power generation efficiencies of the proton exchange membrane fuel cell (PEMFC) stack and the system are 39.34% and 33.42%, respectively; when the fuel flow rate increases from 1.0 mol/s to 1.3 mol/s, the generation power of the stack increases from 95.14 kW to 119.95 kW, and the power generation efficiency of the stack increases from 39.34% to 43.05%; when the fuel availability increases from 0.65 to 0.95, the stack power increases from 67.93 kW to 95.14 kW, and the stack power efficiency increases from 2809% to 39.34%.

M911.4

西北有色金属研究院，西部材料联合技术中心资助项目（JS2120）