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THERMAL CONDUCTIVITY OF CERAMIC SPONGES AT TEMPERATURES UP TO 1000°C

巻 6, 発行 2, 2015, pp. 133-143
DOI: 10.1615/.2015012330
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要約

This publication reports about high-temperature heat transfer in ceramic sponges. Ceramic sponges are open-celled solid network structures with advantageous properties: low pressure drop, high specific surface area, comparatively high heat transfer, and good cross mixing in the fluid. For designing technical equipment a so-called homogeneous model for calculating the heat transport inside the sponges can be used. The key parameter for this model is the two-phase thermal conductivity (also often called effective thermal conductivity). In this contribution experimental results for the twophase thermal conductivity with and without flow for different Al2O3 sponge types are presented. The temperature was varied up to 1000°C, where thermal radiation has to be considered as one important heat transfer mechanism. The results were correlated enabling the estimation of heat transfer in any sponges.

によって引用された
  1. Mendes Miguel A.A., Goetze Pitt, Talukdar Prabal, Werzner Eric, Demuth Cornelius, Rössger Philip, Wulf Rhena, Gross Ulrich, Trimis Dimosthenis, Ray Subhashis, Measurement and simplified numerical prediction of effective thermal conductivity of open-cell ceramic foams at high temperature, International Journal of Heat and Mass Transfer, 102, 2016. Crossref

  2. Wei Gaosheng, Huang Pingrui, Chen Lin, Xu Chao, Du Xiaoze, Experimental investigations on radiative properties of two kinds of open-cell porous ceramic materials, 1850, 2017. Crossref

  3. Niu Zhi-Tian, Qi Hong, Ji Yu-Kun, Wen Shuang, Ren Ya-Tao, He Ming-Jian, Real-time reconstruction of thermal boundary condition of porous media via temperature sequence, International Journal of Thermal Sciences, 177, 2022. Crossref

  4. Wang Enyu, Shi Zhongtian, Chen Miaomiao, Tang Shiqian, Zhang Xiangyu, Zhang Wei, Investigation of effective thermal conductivity of SiC foam ceramics with various pore densities, Open Physics, 20, 1, 2022. Crossref

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