Investigating performance illuminance-based metrics in evaluating the lighting condition within Architectural design studios according on users’ activity type

Subject Areas : Space Ontology International Journal

Zahra Sharifian ¹ , Narges Dehghan ² , Mahdi Hamzenejad ³ , Zahra S. Zomorodian ⁴

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Received: 2024-02-27 Accepted : 2025-02-09

Keywords: Daylight, User satisfaction, Illuminance-based metric, Simulation, Field search,

Abstract :

Proper daylight utilization in educational spaces enhances energy efficiency and positively influences performance, focus, and the quality of students' learning. The primary objective of this research is to assess the precision and validity of daylight metrics in evaluating lighting conditions within educational spaces emphasis on activity type. A field study involving measurements and questionnaire surveys was conducted in six architectural studios from two architecture schools based in Isfahan City to assess user satisfaction with lighting conditions. The daylight and glare metrics were calculated through simulation and compared with occupants’ responses and on-site measurements.The research findings reveal that among the static metrics employed to predict light quantity, the strongest correlation with user satisfaction is associated with the Ep threshold of 250-500 lux for paper-based activities. Conversely, users demonstrated the highest satisfaction within the Ep threshold range of 150-200 lux for mainly computer work. Among the dynamic metrics, a significant positive correlation exists between user satisfaction and the useful daylight illuminance (UDI) values of 100-300 lux for mainly computer work and 300-3000 lux for mainly paperwork. Metrics such as UDIe, ASE, and sDG exhibit a significant negative correlation with user responses, indicating the occurrence of annoying glare.

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