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Performance optimisation of office buildings in the context of overheating and daylighting with external shadings

Dış gölgeleme elemanları yardımı ile ofis binalarının aşırı ısınma ve gün ışığı performansının optimizasyonu

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  1. Tez No: 757309
  2. Yazar: GİZEM İZMİR CİRAK
  3. Danışmanlar: DOÇ. HOSSEİN SADEGHİ MOVAHED
  4. Tez Türü: Yüksek Lisans
  5. Konular: Mimarlık, Architecture
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 2017
  8. Dil: İngilizce
  9. Üniversite: Oxford Brookes University
  10. Enstitü: Yurtdışı Enstitü
  11. Ana Bilim Dalı: Mimarlık Ana Bilim Dalı
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: 126

Özet

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Özet (Çeviri)

Overheating, which refers to feel uncomfortable because of temperature increases in a building, has become more important due to the climate changes. In order to reduce unwanted heat gain and glare while maintaining high light quality in the building, solar shading devices can be used as a solution and all shading devices have considerably different effects on the visual relationship with outside, thermal comfort and daylight level of the building. Except for their contribution to occupant physical and psychological satisfaction, they provide a significant energy profit by reducing cooling loads as a financial benefit. This study aims to investigate balancing cooling and lighting energy demand in office buildings in Izmir, Turkey by using external shading devices whilst considering the future implications. For this purpose, some quantitative analysis methods were developed to reduce energy loads and improve occupant satisfaction. Drawn typical office building in Designbuilder software tool was simulated for predetermined external shading types as overhang, louvre and sidefin and their effective factors for each orientation. Then, the results obtained from simulations were compared and the best values for each factor were selected on the basis of direction. After the identification of the best factors for each shading devices, the best ones were compared to identify directional requirements. At the end of this process, for each direction, the best shading option with suitable factors was identified and the optimum option was created by combining all best options. Consequently, 12.60% of the reduction in cooling and lighting load was obtained while maintaining occupant satisfaction at high levels in offices after three hundred simulations on the individual, directional and combinational based. Also, the main limitation of this study was that optimisation progress was conducted by defining some variables and values manually differing from optimisation software users, therefore it can be possible to reduce lighting and cooling loads more by selecting the exact optimum points automatically.

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