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Experimental and numerical study of metal foam composites in innovative application of thermal energy storage

Abstract : The objective of this Ph.D. thesis is to study the thermal behavior of the aluminum foam and phase change material (PCM) composite by both experimental and numerical methods in order to know the phenomena of storage of thermal energy in these materials. The manufacturing process of open-cell aluminum foam is firstly analyzed numerically to reduce the manufacturing defects in the samples. The heat transfer characteristics of PCM embedded in aluminum foams with different porosities are then investigated by analyzing the melting processes and the temperature variations in the composites. Two numerical models for low and high porosity aluminum foam are established to evaluate the energy storage performance of the composites. The results show that the aluminum foam can greatly improve the heat transfer performance in PCM due to its high thermal conductivity. The energy storage performance depends strongly on the porosity of the aluminum foam/PCM composite. An optimized porosity highlights this performance and improves the thermal behavior. The last part of this thesis proposes an improved structure of aluminum foam with respect to the uniform structure: Association of the metal fin and the foam with graded porosity. This new structure possesses a better energy storage performance especially in the case of the isothermal heat source
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Submitted on : Thursday, December 19, 2019 - 4:30:07 PM
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  • HAL Id : tel-02419964, version 1

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Feng Zhu. Experimental and numerical study of metal foam composites in innovative application of thermal energy storage. Materials. Université de Technologie de Troyes, 2017. English. ⟨NNT : 2017TROY0009⟩. ⟨tel-02419964⟩

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