Thermal Conductivity of Straw Bales: Full Size Measurements Considering the Direction of the Heat Flow
TypeArticles dans des revues avec comité de lecture
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.
Showing items related by title, author, creator and subject.
Lumbar annulus fibrosus biomechanical characterization in children by ultrasound shear wave elastography VERGARI, Claudio; DUBOIS, Guillaume; GENNISSON, Jean-Luc; TANTER, Mickael; DUBOUSSET, Jean; ROUCH, Philippe; SKALLI, Wafa; VIALLE, Raphael (Springer, 2016)Objectives Intervertebral disc (IVD) is key to spine biomechanics, and it is often involved in the cascade leading to spinal deformities such as idiopathic scoliosis, especially during the growth spurt. Recent progress in ...
VERGARI, Claudio; VERGARI, Claudio; ROUCH, Philippe; DUBOIS, Guillaume; BONNEAU, Dominique; DUBOUSSET, Jean; TANTER, Mickael; GENNISSON, Jean-Luc; SKALLI, Wafa (SAGE, 2014)Patient-specific numerical simulation of the spine is a useful tool both in clinic and research. While geometrical personalization of the spine is no more an issue, thanks to recent technological advances, non-invasive ...
Non-invasive biomechanical characterization of intervertebral discs by shear wave ultrasound elastography: a feasibility study VERGARI, Claudio; ROUCH, Philippe; DUBOIS, Guillaume; BONNEAU, Dominique; DUBOUSSET, Jean; TANTER, Mickael; GENNISSON, Jean-Luc (Springer, 2014)Objectives Although magnetic resonance is widely spread to assess qualitatively disc morphology, a simple method to determine reliably intervertebral disc status is still lacking. Shear wave elastography is a novel technique ...
SELMI, Jaouher; LORONG, Philippe; COSTES, Jean-Philippe; POULACHON, Gérard; CARRAS, Patrice (Springer, 2015)This article presents an original study about the dynamic of a machining operation based on the coupling receptance methodology. The Frequency Response Function (FRF) of a machine tool is numerically coupled with the FRF ...
SELMI, Jaouher; COSTES, Jean-Philippe; LORONG, Philippe; POULACHON, Gérard; CARRAS, Patrice (Congrès Français de Mécanique, 2013)Machine tool is the most used manufacturing means in automotive industry. This kind of manufacturing machine is very expensive and has immediate influence on produced workpiece quality. During machining process design, a ...