An evaluation of material characteristics and hygrotermal performance of ecological thermal insulation materials for use in timber frame buildings

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2022-11-28

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Atılgan, Ilgaz Azra

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The effects of thermal insulation materials with toxic properties on users and on the ecosystem have led to the search for natural thermal insulation materials. The aim of this research was to study the properties of cork, coconut fiber, and cellulose-based ecological thermal insulation materials (ETIM) and to evaluate the hygrothermal behavior of the structure by using these materials in a sample timber framed structure. The physical, thermal and hygric properties of the selected ecological thermal insulation materials (Corkoco, Expanded Corkboard, CelluBor) that were obtained from Amorim and CelluBor were determined in the laboratory at METU Materials Conservation Laboratory at the Faculty of Architecture; and data was gathered on their bulk density, apparent porosity, thermal conductivity, specific heat capacity, water vapor permeability, and capillary water absorption. Thereafter, WUFI Plus simulation software was used to compare the use of ETIMs in a timber frame structure in terms of their hygrothermal properties. Expanded Corkboard (EC1) was found to be the material showing the best material properties out of the four investigated samples. All the materials studied gave acceptable results in terms of energy consumption and thermal insulation according to the TS 825 standard. It has been seen that the hygrothermal performance in the selected timber frame structure is also ideally achieved with EC1.

Subject Keywords

Timber frame buildings, Ecological thermal insulation materials, Energy performance simulation, Hygrothermal performance simulation

URI

https://hdl.handle.net/11511/101293

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

I. A. Atılgan, “An evaluation of material characteristics and hygrotermal performance of ecological thermal insulation materials for use in timber frame buildings,” M.S. - Master of Science, Middle East Technical University, 2022.