Optimizing artificial lighting design in hospital bedrooms as a function of natural light exposure: a case study of Al-Zarqa Hospital

Purpose This study aims to investigate the artificial lighting design of two identical inpatient rooms at Zarqa Governmental Hospital – one facing north and one south – to assess whether façade orientation and daylight exposure should influence lighting layout decisions. Design/methodology/approach In this paper, computer numerical simulations, DIALux EVO and Daylight Factor were used to test and analyze the data of two inpatient bedrooms at Zarqa Governmental Hospital in Al-Zarqa, Jordan. Findings The findings show that façade orientation has a direct impact on Daylight Factor and illuminance balance, underscoring the importance of room-specific lighting strategies in health-care facilities advocate for a shift away from uniform lighting standards and toward more context-responsive lighting design. Originality/value The study reveals that the orientation of inpatient rooms significantly influences daylight availability and lighting needs in healthcare settings. By using computer numerical simulations and Daylight Factor analysis, the research evaluates the lighting design of two identical rooms at Zarqa Governmental Hospital. The findings advocate for adaptive lighting systems that prioritize context-responsive designs to improve patient comfort and recovery.