Optimization of Thermal Insulation Performance for the Porous Materials |
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| Authors: | Xiaojian Wang Haihan Liu Liangcheng Wang Baoyong Liu Liangbi Wang |
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| Affiliation: | 1. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, China;2. Key Laboratory of Railway Vehicle Thermal Engineering of Education Ministry, Lanzhou Jiaotong University, Lanzhou, Gansu, Chinaxjwang@mail.lzjtu.cn;4. Key Laboratory of Railway Vehicle Thermal Engineering of Education Ministry, Lanzhou Jiaotong University, Lanzhou, Gansu, China |
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| Abstract: | ABSTRACTPorous materials are widely used in porous media filtration, membrane separation, catalyst substrates, solid fuel cells, insulation, and other fields. When the porous material used in the field of insulation, heat transfer characteristics become its most important performance parameters. The heat transfer characteristics of porous material is a complex issue affected not only by solid elements and porosity, it is also affected by composite structures. Therefore, how to optimize the heat transfer properties of porous materials is a problem to be urgently solved. In this paper, the numerical method is used to study the effects of pore size, pore shape, pore connectivity, porosity and so on. It is found that pore shape, pore connectivity and gas conductivity have great impacts on the heat transfer of porous materials. The effect of pore arrangement is very little. The design optimization of porosity is affected by porous material mechanical property. |
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