不織アルミニウム繊維層の有効熱伝導率の大きな異方性(熱工学,内燃機関,動力など)

概要

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A Weavless Aluminum Fiber Layer (WAFL) is an aluminum fiber collection (wool) with its diameter of about 120μm. In the previous study, the effective thermal conductivity λ_<ey> of WAFL, placed horizontally on the measurement equipment, i.e., heat transfers across the WAFL thickness, indicated a relatively low value as a insulation material. However, the effective thermal conductivity λ_<ex> of WAFL, placed vertically placed on the equipment, i.e., heat transfers parallel to the WAFL surface, indicated significantly larger value compared with the λ_<ey>. As the results, it is found that the effective thermal conductivity of the WAFL indicates larger anisotropic characteristics, and also is largely affected by its density or porosity.
社団法人日本機械学会の論文
2004-08-25