The Thickness of Insulation to be Applied on The External Walls of Buildings Depends on Embodied Energy and Thermal Atalet Index

Year 2023, , 50 - 62, 15.06.2023

Okan Kon

https://doi.org/10.53448/akuumubd.1272710

Abstract

In the study, the insulation thickness was calculated depending on the different embodied energy (production energy) of the insulation material and the wall thermal resistance. In recent years, embedded or production energies, which cover all the energies used in buildings, from raw materials to building and insulation materials, have begun to be considered in building energy consumption reviews. The thermal atalet index, together with the insulation thickness of the building envelope, is one of the essential parameters to be considered in building energy-saving analysis. In the study, thermal atalet index values were determined depending on the thickness of the insulation material for different periods. Natural gas and coal are assumed to be used in the heating system, and Polyurethane was taken as insulation material. The highest insulation thickness was calculated as 0.064 m for 250 heating days, 2.0 m2.K/W thermal resistance and 30 MJ/kg embodied energy. The lowest insulation thickness was 0.006 m for 100 heating days with 2.0 m2.K/W thermal resistance 150 MJ/kg embodied energy.

Keywords

Embodied energy, Production energy, Insulation thickness, Thermal atalet index

Binaların Dış Duvarlarında Uygulanacak Yalıtımın Gömülü Enerjisine Bağlı Kalınlığı ve Isıl Atalet İndeksi

Abstract

Çalışmada, yalıtım malzemesinin farklı gömülü enerjisine (üretim enerjisine) bağlı farklı yalıtımsız duvar ısıl direncine bağlı yalıtım kalınlığı hesaplanmıştır. Son yıllarda binalarda kullanılan, yapı ve yalıtım malzemelerinin başlangıçtan, ham madde halinden ve kullanımına kadar olan tüm enerjileri kapsayan, gömülü veya üretim enerjileri bina enerji tüketim incelemelerinde önemli ölçüde dikkate alınmaya başlanmıştır. Isıl atalet indeksi yapı kabuğu yalıtım kalınlığının ile birlikte bina enerji tasarrufu analizlerinde dikkate alınması gerekli önemli parametrelerdendir. Çalışmada ek olarak, yalıtım malzemesinin kalınlığına ve farklı zaman dilimleri için ısıl atalet indeksi değerleri tespit edilmiştir. Isıtma sisteminde doğal gaz ve kömür kullanıldığı kabul edilmiştir. Yalıtım malzemesi olarak poliüretan alınmıştır. En yüksek yalıtım kalınlığı, 250 ısıtma günde 2.0 m2.K/W ısıl dirençte 30 MJ/kg gömülü enerjide, 0.064 m olarak hesaplanmıştır. En düşük yalıtım kalınlığı ise 100 ısıtma günde 2.0 m2.K/W ısıl dirençte 150 MJ/kg gömülü enerjide, 0.006 m olarak bulunmuştur.

Keywords

Gömülü enerji, Üretim enerjisi, Yalıtım kalınlığı, Isıl atalet indeksi

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