COMPARATIVE EXPERIMENTAL STUDY ON WATER COOLING AND POWER GENERATION IMPROVEMENT OF HOLLOW PHOTOVOLTAIC WINDOWS IN DIFFERENT ORIENTATIONS

Shi Yuezhang; Ran Maoyu; Xu Hang

doi:10.19912/j.0254-0096.tynxb.2025-0574

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 201-210. DOI: 10.19912/j.0254-0096.tynxb.2025-0574

COMPARATIVE EXPERIMENTAL STUDY ON WATER COOLING AND POWER GENERATION IMPROVEMENT OF HOLLOW PHOTOVOLTAIC WINDOWS IN DIFFERENT ORIENTATIONS

Shi Yuezhang^1,2, Ran Maoyu^1,2, Xu Hang^1,2

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Abstract

This study investigates the impacts of orientations on the performance of water flow cooling and power generation improvement in hollow photovoltaic （PV） window. By building two chambers with hollow PV windows, the surface temperatures and power generation with different orientations were measured during summer in Xiamen area. The research results indicate that under the same water supply flow rate, the water-cooling effect of photovoltaic Windows for cooling and power enhancement is mainly related to the solar radiation intensity and duration on the vertical surface of the window and the water supply temperature. The greater the solar radiation it receives and the longer the duration, the lower the water supply temperature, and the better the water-cooling effect for cooling and power enhancement. Also indicate that, the orientations had a significant impact on the temperature reduction of the inner and outer surfaces of the PV window. The ranking of the cooling effect is： southeast orientation （44.1%）≈east orientation（44.0%）>west orientation （41.7%）>southwest orientation（38.3%）>south orientation （36.9%）. Furthermore, the orientations of the PV window have a significant impact on the daily power generation. The ranking of the percentage increase in power generation is： south orientation（34.6%）>southwest orientation （23.1%）>west orientation （16.7%）>southeast orientation（11.9%）>east orientation （6.7%）. Finally, water cooling could effectively absorb the heat from window. When the water supply flow rate remains constant, the ratio of the water heat variation to the cumulative radiation is ranked as follows： south-facing > southeast-facing>west-facing≈southwest-facing≈east-facing.

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PV power generation / water cooling / cadmium telluride / window orientation / hollow photovoltaic window / active cooling

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Shi Yuezhang, Ran Maoyu, Xu Hang. COMPARATIVE EXPERIMENTAL STUDY ON WATER COOLING AND POWER GENERATION IMPROVEMENT OF HOLLOW PHOTOVOLTAIC WINDOWS IN DIFFERENT ORIENTATIONS[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 201-210 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0574

References

[1] Hassan M M, Refat K H, Baten M Z, et al.Energy saving potential of photovoltaic windows: impact of shading, geography and climate[J]. Solar Energy, 2022, 240: 342-353.
[2] 高峰. 双层光伏窗室内光环境与建筑能耗研究及优化[D]. 太原: 太原理工大学, 2020.
Gao F.Study and optimization on indoor daylighting environment and energy consumption of double-glazed photovoltaics windows[D]. Taiyuan: Taiyuan University of Technology, 2020.
[3] 马潇, 史晓鹏, 綦远磊, 等. 自然通风对半透明光伏双层皮幕墙夏季运行特性的影响[J]. 建筑节能(中英文), 2022, 50(3): 24-30.
Ma X, Shi X P, Qi Y L, et al.Effect of natural ventilation on performance of semi-transparent photovoltaic double skin facade in summer[J]. Building Energy Efficiency, 2022, 50(3): 24-30.
[4] Zhang C Y, Ji J, Wang C Y, et al.Experimental and numerical studies on the thermal and electrical performance of a CdTe ventilated window integrated with vacuum glazing[J]. Energy, 2022, 244: 123128.
[5] 孙爱洲. 窗式太阳能PV-T系统性能研究及优化[D]. 南京: 南京理工大学, 2013.
Sun A Z.Study and optimize on the performance of the PV-T system based on windows[D]. Nanjing: Nanjing University of Science and Technology, 2013.
[6] 陈海飞, 王超伟, 郭晶晶, 等. 光伏窗发电供热系统的应用性研究[J]. 太阳能, 2017(2): 64-69.
Chen H F, Wang C W, Guo J J, et al.Study on the application of photovoltaic window power generation and heating system[J]. Solar Energy, 2017(2): 64-69.
[7] 郭强, 邱宽宽, 闫帅, 等. 水幕光伏窗光电光热转换特性的数值模拟研究[J]. 工业安全与环保, 2020, 46(7): 76-80, 97.
Guo Q, Qiu K K, Yan S, et al.Numerical simulation study on photoelectric thermal conversion characteristics of water curtain photovoltaic window[J]. Industrial Safety and Environmental Protection, 2020, 46(7): 76-80, 97.
[8] 章文杰, 张佳俊, 田秀丰, 等. 半透明晶体硅光伏热电制冷辐射窗的性能分析[J]. 太阳能学报, 2022, 43(9): 45-51.
Zhang W J, Zhang J J, Tian X F, et al.Performance analysis of semi-transparent crystalline silicon photovoltaic thermoelectric cooling radiation window[J]. Acta Energiae Solaris Sinica, 2022, 43(9): 45-51.
[9] Ke W, Ji J, Zhang C Y, et al.Field experimental test and performance analysis of a novel hybrid CdTe PV glass module integrated with phase change materials[J]. Renewable Energy, 2023, 217: 119196.
[10] Wang W T, Yang H X, Xiang C Y.The overall performance of a novel semi-transparent photovoltaic window with passive radiative cooling coating-a comparative study[J]. Energy and Buildings, 2024, 317: 114433.
[11] 黄佳. 半透明光伏玻璃对建筑热光电综合影响的研究[D]. 南京: 南京理工大学, 2018.
Huang J.Research on semi-transparent PV glass: thermal performance, power generation and daylighting applied to the buliding[D]. Nanjing: Nanjing University of Science and Technology, 2018.