The Solar Chart for Designing Shading Devices For Tripoli City, Libya

Due to lake of standardized methods to design and validate sun shading devices in Libya, this study aims at developing a solar chart, which can be used as a practical and systematic methodology for designing sun-shading devices in the city of Tripoli. In order toachieve the objective of this study, this paper was divided into five sections. The first section is dealing with a focused literature review with respect to types of shading devices and their impact on the exterior wall openings, the position of the sun, sun’s altitudes azimuths, and how to mathematically be determined; the sun charts, and the shading calculator.While the second section was dedicated to the determination of the overheated periods over the year in which shading devices should be in place. The third section presents computer software developed in order to automatically calculate the sun angles (Altitudes and Azimuth angles). The north latitude of 32.59 was chosen as a validation example