A Dynamic Daylight Assessment Model for Measuring Visual Comfort in Egyptian Houses

Document Type : Original Article

Authors

1 Architecture and Urban Planning Department, Faculty of Engineering, Suez Canal University, Ismailia, Egypt

2 Professor of Urban and Regional Planning, Faculty of Engineering, Suez Canal University

Abstract

In present times, daylight metrics have evolved to include dynamic metrics. However, Egyptian codes continue to rely solely on the static metric of illuminance to evaluate daylight within a space, although recent research has shown that illuminance alone falls short of describing daylight quality within a space. This study investigates daylight factors and metrics in various assessment models, it develops a comprehensive assessment model that can measure visual comfort in Egyptian residential buildings. An analytical-qualitative approach was employed to identify both physical and non-physical quality factors of dynamic daylight. This approach involved examining daylight quality models, international and national codes, and green building rating systems. Also, the use of environmental assessments to measure daylight factors was studied to ensure that the assessment model was applicable. Findings show that visual comfort can be measured in Egyptian residential buildings in several factors using a combination of metrics, technical environmental assessments, and observer-based environmental assessments.

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