Study of Hydrothermal Behavior of Thermal Insulating Materials Based On Natural Fibers

Authors: J. Zach, J. Hroudova, J. Brozovsky

Abstract:

Thermal insulation materials based on natural fibers represent a very promising area of materials based on natural easy renewable row sources. These materials may be in terms of the properties of most competing synthetic insulations, but show somewhat higher moisture sensitivity and thermal insulation properties are strongly influenced by the density and orientation of fibers. The paper described the problem of hygrothermal behavior of thermal insulation materials based on natural plant and animal fibers. This is especially the dependence of the thermal properties of these materials on the type of fiber, bulk density, temperature, moisture and the fiber orientation.

Keywords: Thermal insulating materials, hemp fibers, sheep wool fibers, thermal conductivity, moisture.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1096243

References:

[1] Xu, Jianying, Ryo Sugawara, Ragil Widyorini, Guangping HAN a Shuichi KAWAI. Manufacture and properties of low-density binderless particleboard from kenaf core. Journal of Wood Science. 2004-2-1, vol. 50, issue 1, s. 62-67.
[2] Korjenic, Azra, Vít Petránek, Jiří Zach a Jitka Hroudová. Development and performance evaluation of natural thermal-insulation materials composed of renewable resources. Energy and Buildings. 2011, vol. 43, issue 9, s. 2518-2523
[3] Khedari, Joseph, Noppanun Nankongnab, Jongjit Hirunlabh, Sombat Teekasap a Shuichi Kawai. New low-cost insulation particleboards from mixture of durian peel and coconut coir. Building and Environment. 2004, vol. 39, issue 1, s. 59-65
[4] Annex D des CUAPS: (Annex D des CUAPs „Factory-made thermal insulation material and/or acoustic insulation material made of vegetable fibres; edition Oktober 2009"). oktober 2009.
[5] Korjenic, Azra a Thomas Bednar. Developing a model for fibrous building materials. Energy and Buildings. 2011, vol. 43, issue 11, s. 3189-3199
[6] Manohar, Krishpersad, Dale Ramlakhan, Gurmohan Kochhar, Subhas Haldar a Shuichi Kawai. Biodegradable fibrous thermal insulation. Journal of the Brazilian Society of Mechanical Sciences and Engineering. 2006, vol. 28, issue 1, s. - (cit. 2013-10-24).
[7] Arambakam, R., H. Vahedi Tafreshi a B. Pourdeyhimi. A simple simulation method for designing fibrous insulation materials. Materials. 2013, vol. 44, s. 99-106
[8] EN 822 Thermal insulating products for building applications. Determination of length and width, 2013
[9] EN 823 Thermal insulating products for building applications. Determination of thickness
[10] EN 1602 Thermal insulating products for building applications. Determination of the apparent density
[11] ISO 8301 Thermal insulation -- Determination of steady-state thermal resistance and related properties -- Heat flow meter apparatus, Amd1: 2010
[12] EN 12667 Thermal performance of building materials and products. Determination of thermal resistance by means of guarded hot plate and heat flow meter methods. Products of high and medium thermal resistance
[13] ISO 10 456. Building materials and products -- Hygrothermal properties -- Tabulated design values and procedures for determining declared and design thermal values, 2012