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Impact of Fusion Temperature on Hydrothermal Features of Flow within an Annulus Loaded with Nanoencapsulated Phase Change Materials (NEPCMs) during Natural Convection Process

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  • Seyyed Masoud Seyyedi
  • M. Hashemi-Tilehnoee
  • M. Sharifpur

Abstract

A new type of nanofluids is nanoencapsulated phase change materials (NEPCMs), where nanoparticles are made of a shell and a core. In the current study, characteristics of free convection flow, entropy generation, and heat transfer of NEPCMs in an enclosure are investigated. The enclosure is an annulus between concentric horizontal circular and square cylinders with a porous medium. The governing equations (i.e., continuity, energy, and momentum) are written in the nondimensional form and then numerically solved by the control volume finite element method (CVFEM). The results of the validation are in good agreement with those of the literature. The effects of decision variables on the entropy generation number and the average Nusselt number are investigated. The outcomes discovered that there is a maximum for and a minimum for at for each value of the Stefan number. Also, and ECOP increase by 8.8% and 24.8%, respectively, while decreases by 12.8% when increases from 0 (pure fluid) to 0.05 at .

Suggested Citation

  • Seyyed Masoud Seyyedi & M. Hashemi-Tilehnoee & M. Sharifpur, 2021. "Impact of Fusion Temperature on Hydrothermal Features of Flow within an Annulus Loaded with Nanoencapsulated Phase Change Materials (NEPCMs) during Natural Convection Process," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-14, November.
    • Handle: RePEc:hin:jnlmpe:4276894
    DOI: 10.1155/2021/4276894
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    Cited by:

    1. Zhang, Shengqi & Pu, Liang & Mancin, Simone & Dai, Minghao & Xu, Lingling, 2022. "Role of partial and gradient filling strategies of copper foam on latent thermal energy storage: An experimental study," Energy, Elsevier, vol. 255(C).

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