摘要
针对目前光伏光热系统中存在的太阳能全光谱分束技术与甲醇蒸汽重整等问题,基于太阳能全光谱分束技术提出了太阳能光伏-甲醇重整综合发电系统。以线性菲涅耳聚光器为原型,在光伏组件表面喷镀光谱分束薄膜用于光谱的拆分利用。其中可见光部分被光伏电池利用发电,紫外和红外部分被反射至热反应器分解甲醇制备合成气,后通入固体氧化物燃料电池发电。光学分析表明,给定理想分束薄膜光谱特性后,系统光学效率可达90.2%。热力学分析结果表明,该系统具备一定的甲醇热化学分解以及合成气的制备作用,光谱分束薄膜匹配单晶硅光伏组件后系统最高净太阳发电效率可达27.71%,高于传统太阳能聚光集热甲醇重整系统的净发电效率(26.5%)。此外,经济性分析表明,太阳辐照接收面积为100 m2时平准化电力成本为1.4元/(kW·h)。
Aiming at solving the problems of solar full-spectrum beam splitting technology and methanol steam reforming in current photovoltaic photothermal system,a solar photovoltaic(PV)-methanol reforming integrated power generation system is proposed based on the full solar spectrum beam splitting technology.The system is based on a linear Fresnel concentrator,and the surface of the PV module is sprayed with a spectral beam splitter film for spectral splitting and utilization.The visible light part is used by PV cells to generate electricity,and the ultraviolet and infrared parts are reflected in the thermal reactor to decompose methanol and syngas preparation,which is then fed into the solid oxide fuel cell to generate electricity.Optical analysis shows that,when the spectral properties of the ideal beam splitter are determined,the optical efficiency of the system can reach 90.2%.Thermodynamic analysis results show that,the system has a certain role in the thermochemical decomposition of methanol and the preparation of syngas.When the solar beam splitting film is matched with the single crystal silicon photovoltaic,the highest net solar power generation efficiency(NSE) of the system can reach 27.71%,which is higher than that of the conventional solar concentrating heat-collecting methanol reforming system(26.5%).In addition,economic analysis shows that the levelized cost of electricity is 1.4 yuan/(kW·h) when the solar radiation receiving area is 100 m2.
作者
赵宁
王江江
姚梓博
陈海悦
ZHAO Ning;WANG Jiangjiang;YAO Zibo;CHEN Haiyue(Key Laboratory of Low Carbon and High Efficiency Power Generation Technology of Hebei Province,North China Electric Power University,Baoding 071000,China)
出处
《热力发电》
CAS
CSCD
北大核心
2022年第11期74-82,共9页
Thermal Power Generation
基金
国家自然科学基金重大项目(52090064)
国家自然科学基金面上项目(51876064)。
关键词
全太阳光谱
光谱分频
甲醇分解
光热化学
太阳能发电系统
solar full spectrum
spectral splitting
methanol decomposition
photothermal chemistry
solar power generation system
