Analysis of the Anomalous Thermal Properties of Phase Change Materials Based on Paraffin Wax and Multi Walls Carbon Nanotubes

W. G. Alshaer(1*), E. Palomo del Barrio(2), M. A. Rady(3), O. E. Abdellatif(4), S. A. Nada(5)

(1) Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha 13512, Egypt
(2) Univ. Bordeaux, I2M, UMR 5295, Département TREFLE, Esplanade des Arts et Métiers, 33405 Talence, France
(3) Mechanical Engineering Department, Faculty of Engineering, Helwan University,P.O. 11421, Cairo, Egypt
(4) Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, 108 shoubra st., Cairo, Egypt
(5) Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha 13512, Egypt
(*) Corresponding author


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Abstract


Effective thermal conductivity and phase change properties of paraffin wax-based nanocomposites with multi-walled carbon nanotubes are experimentally investigated in this paper. It has been observed that the thermal conductivity enhancement achieved by a small amount of nanotubes is much higher than that predicted by theoretical models. However, the most striking results obtained concern the phase change behavior of the composites. Indeed, a significant rise of the latent heat of the composite compared to that of the paraffin wax has been observed. Moreover, the latent heat increases linearly with the amount of nanotubes added. Several factors might account for these results and are discussed in the paper
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Keywords


Nanocomposites; Phase Change Materials; Nanotubes; Heat Transfer Enhancement; Latent Heat Enhancement; Thermal Energy Storage

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References


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