Abstract
AbstractThe thermal conductivity of wood fiber insulation boards is significantly influenced by the microstructure of the fiber network and in general, the efficiency of wood fiber insulation boards increases with porosity. For higher raw densities, the raw density is a good predictor for the thermal conductivity. For lower raw densities however, this simple relation does not hold anymore. Here, structural information gained from 3D computed tomography images at several scales, modeling of the microstructure, and numerical simulation of the thermal conductivity are combined to get deeper insight into which and how microstructural features influence the thermal conductivity. The model-based simulation as described here shows that the presence and orientation of wood fiber clusters impact the thermal conductivity significantly.
Funder
Bundesministerium für Verbraucherschutz, Ernährung und Landwirtschaft
Fraunhofer-Institut für Techno- und Wirtschaftsmathematik ITWM
Publisher
Springer Science and Business Media LLC
Subject
Industrial and Manufacturing Engineering,Plant Science,General Materials Science,Forestry
Reference43 articles.
1. Bouxsein ML, Boyd SK, Christiansen BA, Guldberg RE, Jepsen KJ, Müller R (2010) Guidelines for assessment of bone microstructure in rodents using micro-computed tomography. J Bone Miner Res 25(7):1468–1486. https://doi.org/10.1002/jbmr.141
2. Carvajal SA, Garboczi EJ, Zarr RR (2019) Comparison of models for heat transfer in high-density fibrous insulation. J Res Natl Inst Stand Technol 124:1–21
3. Dirrenberger J, Forest S, Jeulin D (2014) Towards gigantic RVE sizes for 3d stochastic fibrous networks. Int J Solids Struct 51(2):359–376. https://doi.org/10.1016/j.ijsolstr.2013.10.011
4. Easwaran P (2017) Stochastic geometry models for interacting fibers. Phd thesis, Technische Universität Kaiserslautern. http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-49344
5. EN 12667 (2001) 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. CEN/TC 89/WG 8
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献