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 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45
  • Publication Date: 2021
  • Doi Number: 10.1016/j.seta.2021.101242
  • Journal Name: Sustainable Energy Technologies and Assessments
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Geobase, INSPEC
  • Keywords: Latent heat, Nanoparticle, Phase change material, Thermal energy storage, Graphene nanoplatelets, PHASE-CHANGE MATERIAL, HEAT-TRANSFER, PARAFFIN WAX, NANO-PCM, SYSTEM, SOLIDIFICATION, CONDUCTIVITY, ENHANCEMENT, PERFORMANCE
  • Kocaeli University Affiliated: Yes

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.