Publication date: March 2018
Source:Building and Environment, Volume 131
Author(s): Heangwoo Lee, Hyang-In Jang, Janghoo Seo
Increased energy consumption is an ongoing research concern worldwide. In particular, uses of ongoing studies are focusing on improving indoor comfort via the development of double-skin facades that combine various skin element technologies. In light of this, this study aims to develop an awning system with a built-in light shelf, which is a new type of system combining an awning and a light shelf. It also confirms the effectiveness of this system based on a full-scale test bed by deriving the energy reduction performance and improvements in the comfort of the indoor lighting. The awning system proposed in this study has a built-in light shelf below the awning, and there is a cut-out hole in the cover of the awning so that natural light can hit the shelf. As a result, the system successfully prevents an increase in the indoor temperature by blocking the incoming sunlight and introduces natural light deep within the interior, improving the light uniformity and reducing the lighting energy consumption. The effectiveness of the system was demonstrated by analyzing the improvement in the indoor illumination uniformity and the cooling and lighting energy savings provided by the proposed system compared with existing awning and light shelf systems.
Source:Building and Environment, Volume 131
Author(s): Heangwoo Lee, Hyang-In Jang, Janghoo Seo