该文采用Aspen Plus软件建立膜反应器重整制氢及燃料电池模型,根据拉萨某日太阳能直接辐射强度（DNI）变化计算太阳能可供使用的能量,作为外热源输入重整系统,并分析反应温度、水碳比（S/C）及DNI对该系统各性能指标的影响,性能指标包括甲烷转化率、H2收率、电池功率及电压、太阳能转换为氢能的效率。结果表明：反应温度为500 ℃,S/C为2.5时有利于太阳能甲烷湿重整反应;系统日性能结果显示在某日10:00—20:00时,电池输出功率120 kW,太阳能-化学能转化效率0.368,系统发电效率0.225。
Abstract
The paper builds a membrane reactor reforming hydrogen production and fuel cell power generation system model by Aspen plus. According to the change of direct solar radiation intensity DNI on a certain day in Lhasa, the available energy of solar energy is calculated and used as an external heat source to input the fuel cell power generation system. The effects of reaction temperature, steam-to-carbon ratio （S/C） and the solar direct normal irradiance （DNI） on the performance indicators of the system are analyzed. The performance indicators include methane conversion rate, H2 product yield, output power and voltage of fuel cell, the solar-chemical energy conversion efficiency. The results show that when the reaction temperature is 500 ℃ and the S/C is 2.5, it is conducive to solar methane reforming. The daily system performance results show that from 10 am to 20 pm on a typical day, the system output power is 120 kW, the solar-chemical energy conversion efficiency is 0.368, and the system power generation efficiency is 0.225.
关键词
太阳能 /
热化学储能 /
燃料电池 /
甲烷重整 /
膜反应器
Key words
solar energy /
thermochemical energy storage /
fuel cells /
methane reforming /
membrane reactor
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基金
国家自然科学基金（52090064; 51821004）
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