주거공간 내 광선반 곡률 형태에 따른 채광성능평가 연구

• Published in: 설비공학 논문집, 27(6) Vol. 27; no. 6; pp. 328 - 336
• Main Authors: 오상원(Sangwon Oh), 이행우(Heangwoo Lee), 김용성(Yongseong Kim), 서장후(Janghoo Seo)
• Format: Journal Article
• Language: Korean
• Published: 대한설비공학회 2015
• Subjects: 기계공학; Light-shelf(광선반); Curvature(곡률); Performance evaluation(성능평가); Energy saving(에너지저감)
• ISSN: 1229-6422; 2465-7611
• DOI: 10.6110/KJACR.2015.27.6.328

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.