Estimating Energy Savings in Office Lighting: The Impact of Illuminance Distribution and Fixture Types of Luminaires

Year 2025, Volume: 9 Issue: 1, 99 - 108, 15.03.2025

Narmin Hasanova , İlknur Uygun

https://doi.org/10.54864/planarch.1549649

Abstract

Artificial lighting is a crucial component of office environments and a significant energy consumer. Effective lighting design in offices must balance the well-being and visual comfort of workers with energy efficiency. Therefore, designers need more focus on lighting design for providing more eye-comfort space for workers who spend most of their time in office. This study examines various artificial lighting distributions and fixtures concerning their potential for energy savings and visual comfort. Utilizing a quantitative research approach, both literature review and simulations were conducted. Four recommended lighting fixtures, each with similar power and flux and different shapes from different brands, were selected for analysis. Small, medium, and big office rooms were modelled using the room index formula for diverse office layouts. The simulations of the offices with varied lighting fixtures were carried out in DIALux Evo 11. This study aims to find the optimal lighting fixture for energy saving in the workplace. The findings from the simulation indicated that as the room index increased, there was a slight reduction in both the illuminance levels and uniformity. While the illuminance levels remained above the standard, the uniformity fell short of the required standard. In accordance with the results of the analysis, the optimal choice for lighting in the rooms is a square lighting fixture, which fulfills the necessary standards across various room sizes. Based on simulation results, the recommended artificial lighting fixtures of brands can provide an energy-consuming environment, but they do not consistently ensure visual comfort across all office layouts.

Keywords

Energy saving, artificial lighting, illuminance distribution, lighting fixture

Ofis Aydınlatmasında Enerji Tasarrufunun Tahmini: Aydınlatma Dağılımı ve Armatür Türlerinin Etkisi

Abstract

Yapay aydınlatma, ofis mekanlarının önemli bir bileşeni ve aynı zamanda önemli bir enerji tüketicisidir. Ofislerde etkili aydınlatma tasarımı, çalışanların refah ve görsel konforunu enerji verimliliği ile dengelemelidir. Bu nedenle tasarımcıların, zamanlarının çoğunu ofiste geçiren çalışanlar için daha fazla göz konforu sağlayacak bir ortam sağlamak adına aydınlatma tasarımına daha fazla odaklanmaları gerekmektedir. Bu çalışma, enerji tasarrufu ve görsel konfor potansiyelleri açısından farklı tiplerdeki yapay aydınlatma armatürlerinin ışık dağılımlarının etkisini incelemektedir. Nicel bir araştırma yaklaşımı kullanılarak literatür taraması ve simülasyonlar yapılmıştır. Analiz için her biri benzer güç ve ışık akısına sahip, farklı şekillerde ve farklı markalardan ofisler için önerilen dört aydınlatma armatürü seçilmiştir. Oda indeksi formülüne göre küçük, orta ve büyük olarak tanımlanan ofis odaları, farklı ofis yerleşim düzenleri modellenmiştir. Farklı aydınlatma armatürlerine sahip ofislerin simülasyonları DIALux Evo 11 programında gerçekleştirilmiştir. Bu çalışma, iş yerinde enerji tasarrufu sağlayacak en uygun aydınlatma armatürünü bulmayı amaçlamaktadır. Simülasyondan elde edilen bulgular göstermektedir ki; oda endeksi arttıkça hem aydınlatma seviyelerinde (E) hem de düzgünlük değerinde (U) hafif bir azalma olmaktadır. Aydınlatma seviyeleri standardın üzerinde kalırken, düzgünlük değeri önerilen standardın altında kalmaktadır. Analiz sonuçlarına göre, farklı oda boyutlarına sahip ofislerde aydınlatma için en uygun seçim, gerekli standartları karşılayan kare aydınlatma armatürüdür. Sonuçlar, markalar tarafından ofisler için önerilen yapay aydınlatma armatürlerinin enerji tüketimini azaltan bir ortam sağlayabileceğini, ancak farklı ofis düzenlerinde görsel konforu tutarlı bir şekilde garanti etmediğini göstermektedir.

Keywords

Enerji tasarrufu, yapay aydınlatma, ışık dağılımı, aydınlatma armatürü

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