纳米流体分频折平板聚光CPVT系统设计与分析  

Design and Analysis of Nanofluid Spectrum Splitting CPVT System with Multi-plate Mirror Concentrator

作　　者：王刚[1] 张震 林建清[1] WANG Gang;ZHANG Zhen;LIN JianQing(School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学能源与动力工程学院,吉林132012

出　　处：《工程热物理学报》2024年第8期2239-2244,共6页Journal of Engineering Thermophysics

基　　金：吉林省自然科学基金项目(No.20210101081JC)。

摘　　要：本文提出了一种基于折平板聚光器和水基Ag/CoSO_(4)纳米流体分频器的新型聚光光伏/光热(CPVT)系统。制备了水基Ag/CoSO_(4)纳米流体并进行了测试。结果表明,全光谱范围内选定的水基Ag/CoSO_(4)纳米流体的透射率和吸收率分别为57.7%和42.3%。对CPVT系统的光学分析结果表明,CPVT系统的光学效率约为96.34%。对CPVT系统进行的热力学性能分析结果表明,光伏组件的光电转换效率和CPVT系统的总光伏效率分别为28.9%和16.7%,CPVT系统的热效率和?效率分别为40.9%和22.3%。当入口纳米流体流速从0.004 m/s增至0.008 m/s,CPVT系统?效率从24%减小至21%;随着入口纳米流体温度从278 K升高到298 K,CPVT系统的?效率从22%增加到23.2%。A novel concentrating solar photovoltaic and thermal(CPVT)system using multi-plate mirror concentrator and water-based Ag/CoSO_(4) nanofluid spectrum splitter is designed in this paper.The water-based Ag/CoSO_(4) nanofluid is prepared and measured.The results reveal that the absorption and transmission rates of the Ag/CoSO_(4) nanofluid are 42.3%and 57.7%in the full spectrum range.The optical analysis results of the CPVT system show that the optical efficiency of the system is 96.34%.The thermodynamic analysis reveals that the photoelectric efficiency of the PV module and that of the CPVT system are 28.9%and 16.7%,and the thermal and exergy efficiencies of the CPVT system are 40.9%and 22.3%.With the inlet nanofluid flow velocity increased from 0.004 m/s to 0.008 m/s,the exergy efficiency of the CPVT system decreases from 24%to 21%,while when the inlet nanofluid temperature increases from 278 K to 298 K,the exergy efficiency increases from 22%to 23.2%.

关 键 词：太阳能 纳米流体 折平板聚光器 CPVT系统 ?效率 

分 类 号：TK512[动力工程及工程热物理—热能工程]