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Journal of Enhanced Heat Transfer
Fator do impacto: 0.562 FI de cinco anos: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimir: 1065-5131
ISSN On-line: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v18.i3.70
pages 261-269

EXPERIMENTAL STUDY OF A TWO-PHASE CLOSED THERMOSYPHON WITH NANOFLUID AND MAGNETIC FIELD EFFECT

H. Salehi
Heat Pipe and Nanofluid Research Center, Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Saeed Zeinali Heris
Heat Pipe and Nanofluid Research Center, Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Seyyed Hosein Noie
Heat Pipe and Nanofluid Research Center, Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

RESUMO

The application of two-phase closed thermosyphons (TPCTs) is increasing in heat recovery systems in many industrial practices because of their high effectiveness. The enhancement heat transfer of the heat transfer devices can be done by changing the fluid transport properties and flow features of working fluids. In the present study, therefore, the decrease of thermosyphon thermal resistance using paramagnetic nanofluid as working fluid with applying magnetic field is investigated experimentally. The experimental results show that the thermal resistance of the thermosyphon significantly decreased with the nanoparticles concentration increasing as well as magnetic field strength. Also, the Nusselt number in the presence of magnetic field somewhat increased, but the experimental results indicated that the TPCT heat transfer rate better enhanced through nanofluid concentration increment compared to magnetic field strength enhancement.


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