Contact Heat Conductivity Under Conditions of High-Temperature Heat Transfer in Fibrous Heat-Insulating Materials
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A mathematical model for calculating the effective heat conductivity of fibrous materials at high temperatures and variable density has been suggested and substantiated. Consideration is focused basically on accounting for heat conduction in the solid phase of a fibrous material. The calculated results were compared with experimental data that demonstrated a good accuracy of the proposed model. The effective heat conductivity of a fibrous heat-insulating material has been calculated as a function of density for a number of temperatures within the range from 200 to 1000°C.
Keywordsfibrous heat-insulating materials effective heat conductivity contact heat exchange
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