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纳米流体分频折平板聚光CPVT系统设计与分析

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本文提出了一种基于折平板聚光器和水基Ag/CoSO4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/CoSO4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/CoSO4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系统的热效率和㶲效率分别为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系统㶲效率从24％减小至21％;随着入口纳米流体温度从278 K升高到298 K，CPVT系统的㶲效率从22％增加到23。2％。
Design and Analysis of Nanofluid Spectrum Splitting CPVT System with Multi-plate Mirror Concentrator
A novel concentrating solar photovoltaic and thermal(CPVT)system using multi-plate mirror concentrator and water-based Ag/CoSO4 nanofluid spectrum splitter is designed in this pa-per.The water-based Ag/CoSO4 nanofluid is prepared and measured.The results reveal that the absorption and transmission rates of the Ag/CoSO4 nanofluid are 42.3％and 57.7％in the full spec-trum 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％.

solar energynanofluidmulti-plate mirror concentratorCPVT systemexergy effi-ciency

王刚、张震、林建清

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东北电力大学能源与动力工程学院,吉林 132012

太阳能 纳米流体 折平板聚光器 CPVT系统 㶲效率

吉林省自然科学基金项目

20210101081JC

2024

工程热物理学报
中国工程热物理学会 中国科学院工程热物理研究所

工程热物理学报

CSTPCD北大核心
影响因子：0.4
ISSN：0253-231X
年,卷(期)：2024.45(8)
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