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Thermal Conductivity and Heat Dispersion Effect


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Effective thermal conductivity measurement

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Measurement of Effective Thermal Conductivity due to Heat Dispersion in NEPCM

Abstract:


This is a numerical study based on the effective thermal conductivity of a nanostructure-enhanced phase change material (NEPCM) in both solid and liquid phases. Paraffin wax with copper particles is the NEPCM used for the study. A unit cell which is considered as a representative elementary control volume of the NEPCM is modeled. It is found that the effective thermal conductivity of the unit cell is enhanced with the increase in volume fraction of the conductive particle. The solid phase thermal conductivity results are in good agreement with the theoretical models. In the liquid phase study, the unit cell is subjected to a shear flow condition which is expected to greatly enhance the effective thermal conductivity due to the heat dispersion caused. The unit cell-based numerical investigations will reveal the roles of the conductive particle and the flow induced heat dispersion on the effective thermal conductivity of NEPCM.

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    Thermal Conductivity Characterization

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