Investigation of Some Important Thermal Properties of Phase Change Materials Upgraded with Nanomaterials

Document Type : Original Article

Authors

1 PhD, Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran.

2 PhD Student, Department of Electrical Engineering, Technical and Vocational University (TVU), Tehran, Iran.

3 Assistant Professor, Department of Crop Production, Faculty of Shirvan's Agriculture, University of Bojnord, Bojnord, Iran.

4 PhD, Department of Industrial Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Abstract

One of the most practical methods for thermal energy storage is the use of phase change materials (PCMs). In this study, the effect of nanomaterial loading on some important thermophysical properties of PCMs including melting enthalpy and thermal diffusivity coefficient was investigated. Silica (SiO2) and copper oxide nanoparticles (CuO) were incorporated into Paraffin wax as a PCM to enhance its thermal properties. To produce the samples, the most accurate methods were used and their morphology was studied by field emission scanning electron microscopy (FESEM). Melting enthalpy and thermal diffusivity were measured by a differential scanning calorimeter (DSC) and a laser flash apparatus (LFA), respectively. The experiments were performed in a factorial arrangement in a completely randomized design with three main factors including the weight percentage of nanoparticles (three levels), the type of nanoparticle (two levels), and the size of the nanoparticles (three levels), and pure Paraffin wax as a control sample with three replications. The results showed that the melting enthalpy of the nanocomposite decreased with the increasing weight percentage of nanoparticles while the size of the nanoparticles displayed no significant effect. In addition, the size and type of nanoparticles affected thermal diffusivity coefficient of Ne-PCMs significantly (p<0.01). Since the enhancement of thermophysical properties of the nanocomposites containing silica nanoparticles was better than copper oxide, it can be concluded that this nanoparticle is more effective in improving the thermal energy storage properties of PCMs.

Keywords

Main Subjects

References

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Karafan Quarterly Scientific Journal
Volume 18, Issue 4 - Serial Number 56
Agriculture / Art & Architecture
February 2022
Pages 453-473

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History

  • Receive Date: 04 November 2021
  • Revise Date: 25 January 2022
  • Accept Date: 20 February 2022

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