DOUBLE-SKIN FACADES IN HEALING ENVIRONMENTS: AN APPROACH FOR ENHANCING DAYLIGHTING PERFORMANCE IN SOUTH-ORIENTED PATIENT ROOMS IN CAIRO, EGYPT
Al-Shafaey, N., Abdelkader, M., Sabry, H., Nessim, A. (2020). DOUBLE-SKIN FACADES IN HEALING ENVIRONMENTS: AN APPROACH FOR ENHANCING DAYLIGHTING PERFORMANCE IN SOUTH-ORIENTED PATIENT ROOMS IN CAIRO, EGYPT. EKB Journal Management System, 165(0), 96-113. doi: 10.21608/erj.2020.131829
Noha Al-Shafaey; Morad Abdelkader; Hanan Sabry; Ashraf Nessim. "DOUBLE-SKIN FACADES IN HEALING ENVIRONMENTS: AN APPROACH FOR ENHANCING DAYLIGHTING PERFORMANCE IN SOUTH-ORIENTED PATIENT ROOMS IN CAIRO, EGYPT". EKB Journal Management System, 165, 0, 2020, 96-113. doi: 10.21608/erj.2020.131829
Al-Shafaey, N., Abdelkader, M., Sabry, H., Nessim, A. (2020). 'DOUBLE-SKIN FACADES IN HEALING ENVIRONMENTS: AN APPROACH FOR ENHANCING DAYLIGHTING PERFORMANCE IN SOUTH-ORIENTED PATIENT ROOMS IN CAIRO, EGYPT', EKB Journal Management System, 165(0), pp. 96-113. doi: 10.21608/erj.2020.131829
Al-Shafaey, N., Abdelkader, M., Sabry, H., Nessim, A. DOUBLE-SKIN FACADES IN HEALING ENVIRONMENTS: AN APPROACH FOR ENHANCING DAYLIGHTING PERFORMANCE IN SOUTH-ORIENTED PATIENT ROOMS IN CAIRO, EGYPT. EKB Journal Management System, 2020; 165(0): 96-113. doi: 10.21608/erj.2020.131829

DOUBLE-SKIN FACADES IN HEALING ENVIRONMENTS: AN APPROACH FOR ENHANCING DAYLIGHTING PERFORMANCE IN SOUTH-ORIENTED PATIENT ROOMS IN CAIRO, EGYPT

Engineering Research Journal
Article 6, Volume 165, Issue 0, March 2020, Page 96-113  XML PDF (826.87 K)
Document Type: Original Article
DOI: 10.21608/erj.2020.131829
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Authors
Noha Al-Shafaey* 1; Morad Abdelkader2; Hanan Sabry2; Ashraf Nessim3
1Masters Candidate, Department of Architecture, Faculty of Engineering, Ain Shams University
2Professor of Architecture and Environmental Control, Faculty of Engineering, Ain Shams University.
3Assistant Professor, Department of Architecture, Faculty of Engineering, Ain Shams University.
Abstract
 
Daylighting provision is an efficient approach in achieving a healing environment. Several researches praised the effect of daylight on stress reduction, shorter hospital length of stay, and the increasing of patients’ satisfaction. The building façade has the primary role in controlling the indoor environment. In addition to daylighting, Double-Skin Façade (DSF) is an approach that can create a balance between patients’ needs without sacrificing energy reduction and thermal comfort in the hot arid desert climate. This paper aimed at investigating the effect of fixed horizontal louvers integration in a multi-story double-skin façade to enhance daylighting performance and visual comfort in south-oriented patient rooms located in Cairo, Egypt. Rhinoceros software was used for modeling the proposed designs coupled with Diva-4-Rhino for daylighting simulations. The effect of changing louver’s depth and slats’ number resulted in 16 designs that were modeled for examination. Daylighting performance was analyzed by two metrics; Spatial Daylight Autonomy (sDA) and Annual Sunlight Exposure (ASE) on both the room surface floor and bed surface planes to represent daylight distribution and visual discomfort, respectively. Results showed that all cases were successful, achieving 100% sDA value on the bed plane area. However, the sDA and ASE values at the room floor area were different. Three louvered double-skin façade designs have succeeded in meeting sDA and ASE acceptance criteria and were recommended for integrating in patient rooms. Also, it was noticed that the unshaded double-skin façade presented the worst performance.
Keywords
Healing environment; Double-Skin façade (DSF); Patient Rooms; Daylighting Performance; Spatial Daylight Autonomy (sDA); Annual Sunlight Exposure (ASE)
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