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Mixed convection of nano-encapsulated phase change suspensions in a wavy wall lid-driven trapezoid cavity

journal contribution
posted on 2024-05-29, 22:50 authored by M Ghalambaz, K Ayoubi Ayoubloo, M Mozaffari, Talal YusafTalal Yusaf, MS Islam, NA Shah, M Baro
The improvement of heat transfer and energy storage are crucial tasks in many renewable energy applications. The thermal and hydrodynamic performances of a nano-encapsulated phase change material (NEPCM) suspension are investigated under a mixed convective heat transfer regime inside a trapezoidal enclosure. As the host fluid and dispersed NEPCM particles circulate in the enclosure, the nanoparticle cores absorb/release heat and undergo a phase transition process, enhancing heat transfer. The governing equations were scaled into a general non-dimensional format and then solved by the finite element method. The influence of nanoparticles fusion temperature and concentration, as well as the wavy wall characteristics and Richardson number, was addressed on heat transfer. A suitable fusion temperature of the nanoparticles can boost the heat transfer rate by 8%. Furthermore, by employing 5% NEPCM particles at a dimensionless fusion temperature of 0.1, the Nusselt number achieved was 9.05. This marks a significant 37% rise when contrasted with a base fluid, which only had a Nusselt number of 5.7.

History

Volume

149

Issue

9

Start Page

4195

End Page

4207

Number of Pages

13

eISSN

1588-2926

ISSN

1388-6150

Publisher

Springer Science and Business Media LLC

Language

en

Peer Reviewed

  • Yes

Open Access

  • No

Acceptance Date

2024-01-31

Era Eligible

  • Yes

Journal

Journal of Thermal Analysis and Calorimetry