What does this research mean for the field?

Window geometry significantly influences daylight performance in classrooms, with standardized rectangular layouts increasing daylight availability but also leading to higher overexposure compared to irregular configurations. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study aims to assess how different window geometries influence daylighting performance in classrooms.

March 17, 2026Journal of DaylightingOpen Access

Evaluating Daylighting Gains from Window Geometry Reconfiguration in a Classroom under a Subtropical Climate

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This study aims to assess how different window geometries influence daylighting performance in classrooms.
Compared two window configurations: floor-to-ceiling and rectangular layouts
Maintained equal glazing area of 25 m² for both setups
Conducted annual climate-based daylight simulations using LM-83 metrics
Employed five different glazing types with varying visible transmittance
Developed a ranking framework for comparing window geometries
Standardized window layout increased daylight availability with sDA values up to 98%
Annual sunlight exposure (ASE) for the standardized layout rose to 46%
Irregular layout limited ASE to a maximum of 23% but decreased daylight autonomy to 41%
Neither configuration met LEED daylighting thresholds
Window geometry is a crucial factor for effective daylight performance

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Implication

Research evaluates daylight performance from window geometry changes in classrooms, suggesting design improvements.

Cite This Study

Daltrozo et al. (2026) studied this question.

synapsesocial.com/papers/69b8ef12deb47d591b8c5158 https://doi.org/10.15627/jd.2026.6

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Evaluating Daylighting Gains from Window Geometry Reconfiguration in a Classroom under a Subtropical Climate

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Discussion

Implication

Cite This Study

Evaluating Daylighting Gains from Window Geometry Reconfiguration in a Classroom under a Subtropical Climate

Key Points

Discussion

Implication

Cite This Study

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