INDOOR LIGHT ENVIRONMENT INSIDE RESIDENTIAL BUILDINGS IN THE EVENT OF APPLICATION OF COMBINED METHODS OF SUN PROTECTION

• Main Authors: Stetskiy Sergey Vyacheslavovich, Khodeir Walid Abbas
• Format: Article
• Language: English
• Published: Moscow State University of Civil Engineering (MGSU) 2012-10-01
• Series: Vestnik MGSU
• Subjects: light environment; daylight factor; sunscreens; "clear sky" method
• Online Access: http://vestnikmgsu.ru/files/archive/issues/2012/8/ru/6.pdf

The article deals with the problem of enhancing the light environment inside residential buildings by means of combined methods of sun protection in the hot and sunny climate of Lebanon. The proposed sunscreens are effective both if the insolation intensity goes up and down. For example, the light, refl ected by the sun protection unit located below the storey in question, brings more natural light into those sections of rooms that are located further from the window, so the illumination factor in these areas is substantially increased. However, the aforementioned pattern of natural light design is effi cient in the clear sky environment of the sunny climate, which differs a lot from the standard conditions of the grey sky. On top of the above, the new approach to the identifi cation of the T4 factor value is proposed. This factor describes the impact produced by the sunscreen in the clear sky environment. In this case, its value shall not be taken as constant. Theoretical and practical research was completed to identify the role of sun protection devices (sunscreens) in the course of natural (passive) regulation of the light environment inside buildings. The principal item of research was the condition of the illumination environment inside the premises under consideration. The research was performed inside a residential building located in a new district of Beirut, the capital of Lebanon. The research comprised several stages, including theoretical and fi eld researches of the light environment inside the premises under consideration in the aftermath of installation of sunscreens.