Earticle

초록

영어

The light shelf, which is a natural light system, has been intensively studied as its efficiency is recognized. However, previous studies on the light shelf have not considered various depths of space, and the performance of light shelf design has not been sufficiently studied with respect to the separation distance between a skylight and a reflection board. Therefore, the purpose of the present study is to establish the fundamental data for light shelf design by deriving an appropriate separation distance between a skylight and a reflection board, considering various depths of space. In the present study, a simulation software program, Radiance, was employed, and the performance evaluation was limited to the environment on the summer solstice when the energy consumption in buildings is the highest. The depth of space was established from 3 m to 8 m at intervals of 1 m for the performance evaluation. The separation distance between a light shelf and a skylight was set to be 50 mm, 100 mm, 150 mm, 200 mm, and 250 mm. The performance evaluation was conducted by deriving the depth of space and uniformity that satisfied the standard of 400 lx. The following conclusions were drawn from the present study. 1) The depths of space that satisfied the standard of 400 lx depending on the separation distance between the light shelf and the skylight established in the present study were the same at the light shelf angle of 0̊. However, the performance of the light shelf depending on the separation distance between the light shelf and the skylight was dependent on the depths of space at the light shelf angle of 30̊. 2) With regard to the uniformity depending on the separation distance between a light shelf and a skylight, the uniformity was excellent in the case where the separation distance between a light shelf and a skylight was equal to or shorter than 100 mm, while the uniformity was poor in the case where the separation distance was equal to or longer than 150 mm, which should be considered in the design of a light shelf. In the present study, appropriate factors related to light shelf design were identified by analyzing the performance of a light shelf depending on the separation distance between a light shelf and a skylight. Various studies may need to be conducted in the future about the performance variation on the basis of the separation distance between a light shelf and a skylight depending on the depth of space in controlling the angle of a light shelf.

목차

Abstract
 1. Introduction
  1.1. Background and Purpose of Study
  1.2. Methods and Scope of Study
 2. Review of Light Shelf Concept, Indoor Illumination Standards, and Previous Studies on Light Shelf
  2.1. Concept of Light Self
  2.2. Review of Previous Studies on Light Shelf
  2.3. Standard of Indoor Illumination
 3. Settings and Results of Performance Evaluation of Light Shelf Separation Distance Depending on Depth of Space
  3.1. Environmental Settings for Performance Evaluation
  3.2. Methods and Results of Performance Evaluation
 4. Conclusions
 References

키워드

저자

• Jiun Her [ Graduate School of Techno Design, Kookmin University, Seoul, Korea ]
• Hangwoo Lee [ Graduate School of Techno Design, Kookmin University, Seoul, Korea ]
• Yongseong Kim [ Graduate School of Techno Design, Kookmin University, Seoul, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Smart Home

• 간기

  격월간

• pISSN

  1975-4094

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605