Using Biomimicry to Increase Daylighting Efficiency in Egyptian Office Buildings

Authors

. Nervana Osama Hanafy, Modern university for technology and informationFollow

Abstract

The aim is to design a biomimicry-inspired building skin for Giza City's business towers. Tasks to complete include enhancing daylighting efficiency and promoting visual comfort To improve the daylighting performance of office buildings in Giza City, Egypt, this article presents 144 alternatives for biomimicry-inspired building skin to improve daylighting efficiency and visual comfort for Giza City's business towers For modeling, Revit, Rhino v6, and Grasshopper were utilized. The suggested daylighting simulation application, ClimateStudio (v1.8.8244.25334), was chosen. The building orientation, used materials, surface level measurement, working hours, and pertinent weather file data have all been provided. The evaluation criteria include Annual Sunlight Exposure (ASE), Annual Average Lux (AAl), Spatial Distributing Glare (sDG), and Spatial Daylight Autonomy (sDA). Nine building skin options have significantly outperformed basic instances with scores ranging from 16.69% to 33.73. Factors affecting performance include solid-to-void ratio, skin unit rotation angle, horizontal bending distance, and distance from the building facade. The results also demonstrated the differences in the alternatives' capacities to enhance daylighting performance within each parameter. For instance, Base Case one's (0.5 m frame depth) and Base Case two's (1.0 m frame depth) total daylighting performance was improved by 15.8% and 33.9%, respectively, when a frame was introduced to Base Case zero (frameless room) via enlarged walls and slabs. Therefore, compared to the average score of 0.5m frame-depth alternatives (84.54 points), comparatively speaking, and the 1.0m frame-depth alternatives have a higher average score (87.75 points). The rotation-angle alternatives (0°) were the most significant to show promise for improving daylighting performance, while the rotation angle (90°) was the least significant to show promise for improving daylighting performance. In conclusion, it is stated that rotation angle, Distance, SV ratio, quantity of units, and horizontal bending distance are the most important design parameters for enhancing daylighting efficacy.

Recommended Citation

Hanafy, . Nervana Osama (2023) "Using Biomimicry to Increase Daylighting Efficiency in Egyptian Office Buildings," Journal of Engineering Research: Vol. 7: Iss. 6, Article 14.
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol7/iss6/14