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All Journal Jurnal Edukasi Elektro
Nugroho, Andri Tri
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Control & Systems Engineering Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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Simulation-Based Optimization of Indoor Lighting Systems for Simultaneous Illuminance Compliance and Energy Efficiency in a Higher Education Digital Library Wardhana, Alex Sandria Jaya; Sukir; Nugroho, Andri Tri
Jurnal Edukasi Elektro Vol. 10 No. 1 (2026): Jurnal Edukasi Elektro Volume 10, No. 1, May 2026
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v10i1.96765

Abstract

Indoor lighting systems must satisfy illuminance standards while maintaining energy efficiency; however, achieving this balance remains challenging in practice. This study evaluates and optimizes lighting performance in a higher education digital library based on SNI 6197:2020. A quantitative framework integrating analytical modeling and DIALux evo simulation is developed. The problem is formulated as a constrained optimization to minimize illuminance deviation under lighting power density (LPD) limits, using field measurements for validation. Initial results show that only 48.3% of rooms meet illuminance standards, while 93.1% operate below allowable LPD limits. Severe under-illumination is observed in critical spaces, with deviations up to −60.3%, despite low LPD values (2.15 - 2.95 W/m²), while some rooms exhibit over-illumination. Statistical analysis indicates a weak and non-significant relationship between LPD and illuminance (Pearson r = 0.239, p = 0.212, R² = 0.057), with a moderate monotonic trend (Spearman ρ = 0.459), confirming that installed power is not a reliable predictor of performance. These findings reveal that increasing installed power does not guarantee compliance. After optimization, all rooms achieve 100% compliance with an average illuminance improvement of 82.5%. These results demonstrate that lighting performance is primarily governed by spatial distribution rather than installed power.
Co-Authors sukir Wardhana, Alex Sandria Jaya