Natural convective flow and heat transfer of Nano-Encapsulated Phase Change Materials (NEPCMs) in a cavity

By Mohammad Ghalambaz, Ali J. Chamkha, Dongsheng Wen. International Journal of Heat and Mass Transfer, 2019

437 citations recorded by the source corpus.

Abstract Free convective flow and heat transfer of a suspension of Nano Encapsulated Phase Change Materials (NEPCMs) in an enclosure is studied. NEPCM particles are core-shell structured with Phase Change Material (PCM) as the core. The enclosure is a square cavity with top and bottom insulated walls and differentially-heated isothermal vertical walls. The NEPCM particles circulate under natural convection inside the cavity. The PCM cores undergo phase change from solid to liquid and absorb some of the surrounding’s heat in the form of latent heat in the hot region, and release the absorbed heat in the cold region by solidification. The governing equations representing the conservation of mass, flow, and heat of NEPCM suspension are introduced in the form of partial differential equations. The governing equations are transformed into non-dimensional form and solved by the finite element method. A grid check and validation test are performed to ensure the accuracy of the results. The outcomes show that the fusion temperature of NEPCM particles is the key factor affecting the heat transfer enhancement of NEPCMs in the natural convection flow. The enhancement of heat transfer is highly dependent on the non-dimensional fusion temperature, θf, and very good performance can be achieved in the range of ¼

Subfields: Biomedical Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/0c4321b4cd44074e1779187483f9118e1bd91988

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In Biomedical Engineering

1. S. A. M. Mehryan
2. Mohammad Ghalambaz
3. Muneer A. Ismael
4. Ali J. Chamkha

In Mechanical Engineering

1. S. A. M. Mehryan
2. Mohammad Ghalambaz
3. Muneer A. Ismael
4. Ali J. Chamkha

Citations in the corpus

• Local thermal nonequilibrium conjugate natural convection of nano‐encapsulated phase change particles in a partially porous enclosure (2020, positive): “Hence, following the work of Ghalambaz et al, 42 the present study aims to address the heattransfer of the NEPCM-suspensions in a layer of the porous medium using the LTNE model for the first time.”