Monthly Lighting Energy Savings Performance Assessment Method for Indoor Louver-Type Daylight Redirecting Systems based on EN 15193-1

JaeHan Lim; SoHee Shim; MiSoo Shin

doi:10.7836/kses.2026.46.5.091

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2026 Vol.46, Issue 5 Preview Page

Monthly Lighting Energy Savings Performance Assessment Method for Indoor Louver-Type Daylight Redirecting Systems based on EN 15193-1 EN 15193-1을 활용한 실내 루버형 집광 채광 장치의 월간 조명 에너지 절감 성능 평가 방법

30 October 2026. pp. 91-105

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Abstract

Recently, indoor louver-type daylight redirection systems have been recognized as a passive solar technology for reducing lighting energy use in South Korea. However, their energy-saving performance is not quantitatively reflected in the current zero-energy building certification system. This study compares international lighting energy performance standards, including EN 15193-1 and DIN V 18599-4, thereby proposing a monthly lighting energy-saving assessment method for indoor louver-type daylight redirection systems based on EN 15193-1 Method 1. The system is represented as a light-guiding system, and its daylight contribution is reflected in the daylight supply and daylight-responsive lighting control factors. A case study of an elementary school classroom demonstrated that the proposed method can quantify the lighting energy-saving effect of the system on a monthly and annual basis. The results indicate the applicability of the proposed method for assessing building energy performance.

Keywords

Indoor louver-type daylight redirecting system

Lighting energy saving

Zero energy building certification system

키워드

실내 루버형 집광 채광 시스템

조명에너지 절감

제로에너지건축물인증제도

References

CEN, Energy Performance of Buildings – Energy Requirements for Lighting – Part 1: Specifications, Module M9, EN 15193-1:2017, Brussels, Belgium, 2017.

DIN, Energy Efficiency of Buildings – Calculation of the Net, Final and Primary Energy Demand for Heating, Cooling, Ventilation, Domestic Hot Water and Lighting – Part 4: Net and Final Energy Demand for Lighting, DIN V 18599-4:2018-09, Berlin, Germany, 2018.

Jahanara, A. and Suk, J. Y., Parametric Design and Analysis of Dynamic Louver for Optimized Daylighting in High-Rise Office Buildings, Proceedings of the 28th International Conference of the Association for Computer-Aided Architectural Design Research in Asia(CAADRIA), Vol. 1, pp. 493-502, March 2023, Ahmedabad, India.

10.52842/conf.caadria.2023.1.493

Truong, V. Q., Evaluating the Impact of Integrated Reflective Louver Daylighting and LED Dimming Control Systems on Visual Comfort and Cognitive Performance in Office Environments, EAI Endorsed Transactions on Sustainable Manufacturing and Renewable Energy, Vol. 2, No. 4, pp. 1-3, 2025.

10.4108/eetsmre.11241

Alsukkar, M., Alkhater, M., Su, Y., and Ibrahim, A., Optimizing Daylighting Performance and Energy Efficiency through the Integration of Parametric Split Louvers in Office Buildings, Energy and Built Environment, Vol. 7, No. 5, pp. 1260-1274, 2026.

10.1016/j.enbenv.2025.08.003

Eltaweel, A. and Su, Y., Using Integrated Parametric Control to Achieve Better Daylighting Uniformity in an Office Room: A Multi-Step Comparison Study, Energy and Buildings, Vol. 152, pp. 137-148, 2017.

10.1016/j.enbuild.2017.07.033

Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 46
No :5
Pages :91-105
Received Date : 2026-09-23
Revised Date : 2026-10-16
Accepted Date : 2026-10-19
DOI :https://doi.org/10.7836/kses.2026.46.5.091

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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