STUDY ON APPLICABILITY OF GLARE INDICES FOR INHOMOGENEOUS SEMI-TRANSPARENT PHOTOVOLTAIC WINDOWS

Yang Lu; Peng Jinqing; Tan Yutong

doi:10.19912/j.0254-0096.tynxb.2024-2007

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 713-721. DOI: 10.19912/j.0254-0096.tynxb.2024-2007

STUDY ON APPLICABILITY OF GLARE INDICES FOR INHOMOGENEOUS SEMI-TRANSPARENT PHOTOVOLTAIC WINDOWS

Yang Lu, Peng Jinqing, Tan Yutong

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Abstract

This study pioneers the investigation into the applicability of conventional glare indices for assessing daylight glare from inhomogeneous STPV windows. A glare perception survey was designed, involving 38 participants to capture their subjective glare perception under conditions with cell strip widths of 4 mm and cell coverage ratios of 40% and 60%. Simultaneously, experiments were conducted using cameras and illuminance meters to measure key lighting environment parameters, such as vertical eye illuminance and DGP. The correlation between image-based glare indices and the survey results was analyzed to assess the relevance of existing indices and determine the influence of cell coverage ratios on the applicability of DGP. The findings reveal that DGP demonstrates the highest coefficient of determination with perceived glare, indicating it is the most relevant index. However, DGP tends to underestimate glare caused by inhomogeneous STPV windows. Furthermore, when the cell coverage ratio increased from 40% to 60%, the accuracy of glare evaluation using DGP decreased by 6.79%.

Key words

building integrated photovoltaic / glare / photovoltaic windows / questionnaire survey / cell coverage ratio

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Yang Lu, Peng Jinqing, Tan Yutong. STUDY ON APPLICABILITY OF GLARE INDICES FOR INHOMOGENEOUS SEMI-TRANSPARENT PHOTOVOLTAIC WINDOWS[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 713-721 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2007

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