Effect of graphene nanoparticles on charging and discharging processes of latent thermal energy storage using horizontal cylinders


Benbrika M., Teggar M., ARICI M. , Ismail K. A. , Bouabdallah S., Mezaache E.

Sustainable Energy Technologies and Assessments, vol.45, 2021 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 45
  • Publication Date: 2021
  • Doi Number: 10.1016/j.seta.2021.101242
  • Title of Journal : Sustainable Energy Technologies and Assessments

Abstract

© 2021 Elsevier LtdIn this paper, thermal charging and discharging processes of a phase change material (PCM) dispersed with graphene nanoplatelets (GN) are investigated in a horizontal cylinder for thermal energy storage. The heat transfer and phase change processes are modeled using the enthalpy-porosity method. The momentum and energy equations are solved using a commercial code. The numerical simulations are validated by comparison with experimental and numerical data of the literature. The results showed that GN concentrations (i.e. ϕ = 0, 0.5 and 1 wt% GN) expedite the charging time while a slight reduction in melting time is obtained for ϕ = 3 wt%. The solidification time reduced by up to 50% whereas the thermal storage capacity declined by up to 14%. These results can help designing efficient thermal energy storage systems.