Article (Scientific journals)
Thermal Conductivity of Straw Bales: Full Size Measurements Considering the Direction of the Heat Flow
Costes, Jean-Philippe; Evrard, Arnaud; Biot, Benjamin et al.
2017In Buildings, 7 (11), p. 1-15
Peer reviewed
 

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Keywords :
thermal conductivity; straw bale; environmental impact
Abstract :
[en] The thermal conductivity of straw bales is an intensively discussed topic in the international straw bale community. Straw bales are, by nature, highly heterogeneous and porous. They can have a relatively large range of density and the baling process can influence the way the fibres are organised within the bale. In addition, straw bales have a larger thickness than most of the insulating materials that can be found in the building industry. Measurement apparatus is usually not designed for such thicknesses, and most of the thermal conductivity values that can be found in the literature are defined based on samples in which the straw bales are resized. During this operation, the orientation of the fibres and the density may not be preserved. This paper starts with a literature review of straw bale thermal conductivity measurements and presents a measuring campaign performed with a specific Guarded Hot Plate, designed to measure samples up to 50 cm thick. The influence of the density is discussed thoroughly. Representative values are proposed for a large range of straw bales to support straw-bale development in the building industry.
Disciplines :
Architecture
Author, co-author :
Costes, Jean-Philippe;  Arts et Metiers ParisTech, LaBoMaP, Cluny
Evrard, Arnaud;  Université Catholique de Louvain - UCL > Architecture et Climat
Biot, Benjamin;  Institut de Conseil et d’Etudes en Développement Durable
Keutgen, Gauthier;  Institut de Conseil et d’Etudes en Développement Durable
DARAS, Amaury ;  Université de Liège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
Dubois, Samuel
Lebeau, Frédéric  ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Agriculture de précision
Courard, Luc  ;  Université de Liège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
Language :
English
Title :
Thermal Conductivity of Straw Bales: Full Size Measurements Considering the Direction of the Heat Flow
Publication date :
2017
Journal title :
Buildings
ISSN :
0007-3725
Publisher :
Stamats Communications Inc.
Volume :
7
Issue :
11
Pages :
1-15
Peer reviewed :
Peer reviewed
Funders :
DGO6 Walloon Region and Burgundy Region
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