Effect of graphene nanoparticles on charging and discharging processes of latent thermal energy storage using horizontal cylinders
Sustainable Energy Technologies and Assessments, cilt.45, 2021 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 45
- Basım Tarihi: 2021
- Doi Numarası: 10.1016/j.seta.2021.101242
- Dergi Adı: Sustainable Energy Technologies and Assessments
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Geobase, INSPEC
- Anahtar Kelimeler: 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 Üniversitesi Adresli: Evet
Özet
© 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.