Equivalent Thermal Conductivity of Open-Cell Ceramic Foams at High Temperatures

JE Li, Baolin Wang

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    At high temperature, heat transfer in open-cell foams occurs by thermal radiation through the whole medium as well as by conduction through the solid matrix and air filling the pores. This paper applies the body-centered cubic cell model to predict radiative properties and the thermal conductivity of the open-cell foams. The model is validated by comparing the results with previous published works. Effects of structural characteristic parameters (cell diameter and porosity) and optical properties of the solid matrix (reflectivity and specularity parameter) on extinction coefficients and the radiative conductivity are discussed. The influence of temperature on the thermal conductivities including the effective, radiative, and the equivalent conductivity of open-cell ceramic foams are analyzed.
    Original languageEnglish
    Pages (from-to)105-122
    Number of pages18
    JournalInternational Journal of Thermophysics
    Volume35
    Issue number1
    DOIs
    Publication statusPublished - Jan 2014

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    foams
    thermal conductivity
    ceramics
    cells
    porosity
    conductivity
    thermal radiation
    matrices
    extinction
    heat transfer
    reflectance
    optical properties
    conduction
    air
    coefficients
    temperature

    Cite this

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    title = "Equivalent Thermal Conductivity of Open-Cell Ceramic Foams at High Temperatures",
    abstract = "At high temperature, heat transfer in open-cell foams occurs by thermal radiation through the whole medium as well as by conduction through the solid matrix and air filling the pores. This paper applies the body-centered cubic cell model to predict radiative properties and the thermal conductivity of the open-cell foams. The model is validated by comparing the results with previous published works. Effects of structural characteristic parameters (cell diameter and porosity) and optical properties of the solid matrix (reflectivity and specularity parameter) on extinction coefficients and the radiative conductivity are discussed. The influence of temperature on the thermal conductivities including the effective, radiative, and the equivalent conductivity of open-cell ceramic foams are analyzed.",
    author = "JE Li and Baolin Wang",
    year = "2014",
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    doi = "10.1007/s10765-013-1545-5",
    language = "English",
    volume = "35",
    pages = "105--122",
    journal = "International Journal of Thermophysics",
    issn = "0195-928X",
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    }

    Equivalent Thermal Conductivity of Open-Cell Ceramic Foams at High Temperatures. / Li, JE; Wang, Baolin.

    In: International Journal of Thermophysics, Vol. 35, No. 1, 01.2014, p. 105-122.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Equivalent Thermal Conductivity of Open-Cell Ceramic Foams at High Temperatures

    AU - Li, JE

    AU - Wang, Baolin

    PY - 2014/1

    Y1 - 2014/1

    N2 - At high temperature, heat transfer in open-cell foams occurs by thermal radiation through the whole medium as well as by conduction through the solid matrix and air filling the pores. This paper applies the body-centered cubic cell model to predict radiative properties and the thermal conductivity of the open-cell foams. The model is validated by comparing the results with previous published works. Effects of structural characteristic parameters (cell diameter and porosity) and optical properties of the solid matrix (reflectivity and specularity parameter) on extinction coefficients and the radiative conductivity are discussed. The influence of temperature on the thermal conductivities including the effective, radiative, and the equivalent conductivity of open-cell ceramic foams are analyzed.

    AB - At high temperature, heat transfer in open-cell foams occurs by thermal radiation through the whole medium as well as by conduction through the solid matrix and air filling the pores. This paper applies the body-centered cubic cell model to predict radiative properties and the thermal conductivity of the open-cell foams. The model is validated by comparing the results with previous published works. Effects of structural characteristic parameters (cell diameter and porosity) and optical properties of the solid matrix (reflectivity and specularity parameter) on extinction coefficients and the radiative conductivity are discussed. The influence of temperature on the thermal conductivities including the effective, radiative, and the equivalent conductivity of open-cell ceramic foams are analyzed.

    U2 - 10.1007/s10765-013-1545-5

    DO - 10.1007/s10765-013-1545-5

    M3 - Article

    VL - 35

    SP - 105

    EP - 122

    JO - International Journal of Thermophysics

    JF - International Journal of Thermophysics

    SN - 0195-928X

    IS - 1

    ER -