EXPERIMENTAL STUDY ON INFLUENCE OF BACKPLANE COOLING ON POWER OUTPUT OF PHOTOVOLTAIC MODULES IN FRIGID PLATEAU REGION

Zhao Bin; Tan Heng; He Suoying; Qu Hongwei; Bai Zhen; Zhou Lawu

doi:10.19912/j.0254-0096.tynxb.2021-1034

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (8) : 122-129. DOI: 10.19912/j.0254-0096.tynxb.2021-1034

EXPERIMENTAL STUDY ON INFLUENCE OF BACKPLANE COOLING ON POWER OUTPUT OF PHOTOVOLTAIC MODULES IN FRIGID PLATEAU REGION

Zhao Bin¹, Tan Heng¹, He Suoying², Qu Hongwei³, Bai Zhen⁴, Zhou Lawu¹

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Abstract

Aiming at the technical problems that the surface temperature of photovoltaic modules affects the output power of photovoltaic station, an experimental test platform for the output power of photovoltaic arrays was set up in Lhasa with two rows and four columns of photovoltaic arrays, and the backplane cooling system was constructed by laying liquid-cooled circulating tubes on the backplane. Through three working condition of the cooling system continuous operation （experiment I）, stopped before starting（experiment II）, started before stopping（experiment III）, the comparative experiments were carried out for photovoltaic modules with or without backplane cooling to explore the influence of the surface temperature of modules on the photovoltaic array output power in frigid plateau. The results show that backplane cooling system can reduce the surface temperature of photovoltaic modules and increase the photovoltaic array output power effectively. In experiment I, II and III, the output power of photovoltaic array increased by 1.4%, 1.3% and 1.0% respectively. By adopting the backplane cooling technology, the additional consumption power of coolant circulation pump is higher than the output power boosted by backplane cooling, but the heat absorbed by the cooling medium can be recycled in frigid plateau region, such as heating domestic water, which can make the comprehensive benefit of backplane cooling system better.

Key words

photovoltaic modules / surface temperature / output power / backplane cooling / frigid plateau

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Zhao Bin, Tan Heng, He Suoying, Qu Hongwei, Bai Zhen, Zhou Lawu. EXPERIMENTAL STUDY ON INFLUENCE OF BACKPLANE COOLING ON POWER OUTPUT OF PHOTOVOLTAIC MODULES IN FRIGID PLATEAU REGION[J]. Acta Energiae Solaris Sinica. 2022, 43(8): 122-129 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1034

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