数字农科院2.0

Optical and thermal performance of a spectral-splitting transmission/photovoltaic system for plant factories

文献类型： 外文期刊

作者： Xinge Chen;Yaning Ji;Gang Wu;Jianbin Zang;Lin Lu;Yi Zhang;Hao Liang

作者机构：

关键词： Composite phase change materials;Photovoltaic;Plant factory;Solar transmission illuminating;Spectral splitting

期刊名称： Energy

ISSN： 0360-5442

年卷期： 2025 年 336 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The spectral range of plant photosynthesis primarily lies within the visible light band (380–780 nm), while the introduction of near-infrared light (780–2500 nm) imposes unnecessary thermal loads. Solar transmission illumination through visible light conduction is one of the most efficient approaches in solar building applications. To enhance solar energy utilization and mitigate adverse infrared effects on optical fibers and plant factories, this study proposes an Integrated Solar Transmission Illuminating and Photovoltaic (ITIPV) system based on composite phase change material cooling. A spectral splitter separates the solar spectrum: visible light supports crop growth, while near-infrared is directed to PV cells for power generation. Nanographite-paraffin composite phase change materials are employed to cool the PV cells. Experimental results show PV cells operate steadily at 43.5 °C. The system achieves average power generation and light transmission efficiencies of 9.5 % and 18.9 %, respectively. The levelized cost of energy (LCOE) is 0.055 USD/kWh, significantly lower than China's residential electricity price (0.084 USD/kWh). This study offers a novel strategy to improve solar transmission illumination efficiency.

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