Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Research on Lighting Performance Evaluation for Different Curvature Reflection Rate in Residential Space

주거공간 내 광선반 곡률 형태에 따른 채광성능평가 연구

  • Oh, Sangwon (The Graduate School of Techno Design, Kookmin University) ;
  • Lee, Heangwoo (The Graduate School of Techno Design, Kookmin University) ;
  • Kim, Yongseong (The Graduate School of Techno Design, Kookmin University) ;
  • Seo, Janghoo (The Graduate School of Techno Design, Kookmin University)
  • 오상원 (국민대학교 테크노디자인전문대학원) ;
  • 이행우 (국민대학교 테크노디자인전문대학원) ;
  • 김용성 (국민대학교 테크노디자인전문대학원) ;
  • 서장후 (국민대학교 테크노디자인전문대학원)
  • Received : 2015.04.10
  • Accepted : 2015.05.14
  • Published : 2015.06.10
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Abstract

Currently, 22% of the total energy consumption of buildings in Korea is used for lighting. Light-shelves have garnered attention as a way to reduce consumption, but there are few studies on the types of curve and curvature, which limits the improvement of light-shelf performance and its design. This study constructed a test bed of actual residential types to evaluate the performance. Outcomes of light usage, according to variables of light-shelves, were used as indicators of performance evaluation. The results are as follows:1) Performance evaluation was conducted on flat-type light-shelves to verify performance of curvature-shelves, which are movable with a width of 200 mm, and the most ideal angle and specification per solar term are calculated. 2) The (-) shaped curvature contributed to a reduction in energy consumption and an improvement of evenness. 3) In case of light-shelves with (-) shaped curvature, an increased angle not exceeding $80^{\circ}$ of the arc contributed to an improvement of light penetration. 4) Appropriate specifications of curved light-shelves include movable types with widths of 200 mm, and angle ranges of $20^{\circ}{\sim}60^{\circ}$. 5) Light energy consumption of a movable light-shelf with curvature and width of 200 mm were reduced by 17% and 7.8% compared to a $0^{\circ}$ fixed and a movable light-shelf, respectively.

Keywords

References

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  1. Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2015 vol.28, pp.6, 2016, https://doi.org/10.6110/KJACR.2016.28.6.256