Aydınlatma alternatiflerinin insan odaklı aydınlatma açısından değerlendirilmesi: Büro örneği

Işığın görsel etkilerinin yanı sıra görsel olmayan biyolojik ve davranışsal etkileri de vardır. Günümüzde ışığın görsel ve görsel olmayan etkilerini dikkate alan insan odaklı aydınlatma önem kazanmıştır. Ancak henüz bu bağlamda işleve göre sağlanması uygun aydınlık düzeyi ve ışığın renk sıcaklığı hakkında bir görüş birliği yoktur. Bu çalışmada bürolar için benimsenebilecek aydınlatma koşullarını araştırmak üzere bir deney hacminde dört statik ve bir dinamik aydınlatma senaryosu kurgulanmıştır. Aydınlık düzeyi ve renk sıcaklıkları farklı bu senaryolar anket çalışması ve aydınlatma hesaplarıyla karşılaştırılmıştır. Araştırma, uzun ve kısa süreli çalışma olmak üzere iki ayrı koşul için planlanmıştır. Her aydınlatma senaryosu uzun süreli çalışmada iki hafta, kısa süreli çalışmada ise yirmi dakika uygulanmıştır. Anket soruları ile katılımcıların duygu durumlarının yanı sıra aydınlatma koşulları da çeşitli açılardan sorgulanmıştır. Her iki çalışma için de anket verilerinin istatistiksel değerlendirmesi yapılmış ve sonuçlar birbirini desteklemiştir. Soğuk ışık rengi ve yüksek aydınlık düzeyi deneklerin kendilerini daha enerjik, uyanık ve dinlenmiş hissetmelerini sağlamıştır. Öte yandan, her iki çalışmada da en çok ılık renkli ışık tercih edilmiştir. Aydınlık düzeyi alternatiflerinden 500 lx düşük, 1500 lx ise yüksek olarak nitelendirilmiştir. En çok yeğlenen aydınlatma senaryosu ılık renkli ışık ile 1250 lx aydınlığın sağlandığı seçenektir. Bu araştırmada elde edilen sonuçlar ile bütünleyici aydınlatma için optimum koşulların belirlenmesine yönelik veriler sunulmuştur.

Anahtar Kelimeler:

Aydınlık düzeyi, Büro, Dinamik aydınlatma, Işığın renk sıcaklığı, Statik aydınlatma.

Evaluation of lighting alternatives in terms of human centric lighting: The case of office

In addition to its visual effects, light also has non-visual biological and behavioural effects. Nowadays, human centric lighting that takes into account the visual and non-visual effects of light has gained in importance. However, in this context there is no consensus on the appropriate illuminance and colour temperature of light according to the function. In this study, four static and one dynamic lighting scenarios were designed in a mock-up room in order to investigate the lighting conditions applicable to offices. These scenarios with different illuminances and colour temperatures were compared through surveys and lighting calculations. The research was planned for two separate conditions; long-term and short-term study. Each lighting scenario was applied for two weeks in the long-term study and twenty minutes in the short-term study. In addition to the emotional states of the participants, the lighting conditions were also questioned from various aspects with the questionnaire. Statistical evaluation of the survey data was conducted for both studies and the results supported each other. Cool light colour and high illuminance ensured that the subjects felt more energetic, alert and rested. On the other hand, neutral coloured light was preferred the most in both studies. Among the illuminance alternatives, 500 lx was assessed as low and 1500 lx as high. The most preferred lighting scenario was the option where 1250 lx illumination is provided with neutral coloured light. With the results obtained in this research, data for determining the optimum conditions for integrative lighting are presented.

Keywords:

Illuminance, Office, Dynamic lighting, Colour temperature, Static lighting,

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