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YALITIM MALZEMELERİNDE TAKVİYENİN ISIL DAVRANIŞA ETKİSİNİN İNCELENMESİ

The Effect of Reinforcement on the Thermal Behavior of Insulation Materials

Journal Name:

  • Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2012

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, the effect of convection and radiation in porous insulation materials on the effective thermal conductivity has been experimentally investigated in terms of the reinforcement. The experiments have been performed on two standard test apparatus and the other experimental setup in which an application is done. For this purpose, the glass wool materials are reinforced with low emissivity and conductive materials, such as stretch nylon, thin foil and white paper, and their thermal effective conductivities are determined. From experimental results, it is observed that the effective thermal conductivity of porous insulation materials reinforced with thin foil is decreased at 0 oC and 10 oC temperatures under the average temperature of 20 oC. The effective thermal conductivity of porous insulation material reinforced with thin foil is decreased up to 9 %. In the applied experimental setup, it found that the warming time of unreinforced ternary glass wool is 28,57 % slower than that of the other reinforced sample. Also, the ETC of glass wool insulation materials improved by using low-reflectivity materials such as stretch nylon and white paper, which are similar to those of the unreinforced glass wool. From these results, it is seen that the radiation is an important mechanism and it can form the effects except for standard behavior.
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Abstract (Original Language): 
Bu çalışmada, gözenekli yalıtım malzemelerinde taşınım ve ışınımın efektif ısıl iletkenliğe etkisi takviye açısından deneysel olarak incelenmiştir. Deneyler, iki standart test cihazı yanısıra uygulaması yapılan deney düzeneğinde gerçekleştirilmiştir. Bu amaçla, emisivitesi düşük ve iletken naylon, kağıt, ince folyo türü malzemeler cam yünü malzemelerine takviye edilmiş ve efektif ısıl iletkenlikleri belirlenmiştir. Deneysel sonuçlardan, ince folyo ile desteklenmiş gözenekli yalıtım malzemelerinde 20 oC ortalama sıcaklığının altında 0 oC ve 10 oC sıcaklıklarda efektif ısıl iletkenliğin azaldığı gözlenmiştir. İnce folyo ile takviyelenmiş gözenekli yalıtım malzemesinin efektif ısıl iletkenliği, % 9 kadar azalmıştır. Uygulamalı deney düzeneğinde, takviyesiz üçlü camyününün ısınma süresinin takviyeli numuneninkinden % 28,57 daha yavaş olduğu bulunmuştur. Ayrıca naylon ve kağıt gibi düşük yansıtıcı malzemeleri kullanarak geliştirilen cam yünü yalıtım malzemelerinin efektif ısıl iletkenliği, takviyesiz camyünü sonuçlarıyla benzer bulunmuştur. Bu sonuçlardan, ışınımın önemli bir mekanizma olduğu ve standart davranışın dışında etkiler oluşturabildiği görülmüştür.
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  • 2
95-108
  • Turkish

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