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Journal of Enhanced Heat Transfer
Facteur d'impact: 0.562 Facteur d'impact sur 5 ans: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimer: 1065-5131
ISSN En ligne: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v17.i4.70
pages 369-380

Motion and Heat-Transfer Analysis of a Closed-Loop Oscillating Heat Pipe with a Magnetic Field

Kan Wongkasem
Heat Pipe and Thermal Tools Design Research Lab. (HTDR), Faculty of Engineering, Mahasarakham University, Thailand
Sampan Rittidech
Heat Pipe and Thermal Tools Design Research Lab. (HTDR), Faculty of Engineering, Mahasarakham University, Thailand
B. Bubphachot
Heat Pipe and Thermal Tools Design Research Lab. (HTDR), Faculty of Engineering, Mahasarakham University, Thailand

RÉSUMÉ

A mathematical model to predict the oscillating motion and heat transfer in a closed-loop oscillating heat pipe in the presence of a magnetic field is presented. Theoretical analysis is used to study the effect of a magnetic field on the motion of vapor bubbles and a liquid slug. The magnetic field is assumed to produce constant field strength in the transverse direction through the evaporating section. The magnetohydrodynamics (MHD) theory is conducted to investigate the driving force due to the oscillating motion. The proposed model investigates the effect of the magnetic field on forced convection. This study employs the theory of boiling heat transfer to determine the heat-transfer coefficients. This model also investigates several parameters such as a type of fluid (water and salt water), magnetic field strength, operating temperature, and dimension of the oscillating heat pipe. This study concludes that magnetic field increases the oscillating motion and can also raise the heat-transfer rate. The oscillating heat-pipe efficiency is enhanced by 8%.


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