Magnetic effect on the enhancement of photo-thermal energy conversion efficiency of MWCNT/Fe3O4 hybrid nanofluid

Shin, Young‐Han; Ham, Jeonggyun; Boldoo, Tsogtbilegt; Cho, Honghyun

doi:10.1016/j.solmat.2020.110635

Cited by 54 publications

(34 citation statements)

References 52 publications

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“…The analysis shows that the setting of the magnetic field and the increasing of the magnetic field strength lead to the vortex generated by the magnetic field source destroyed the boundary layer, which enhances the heat transfer efficiency [22]. When the magnetic nanofluids passes through the magnet, the magnetic nanoparticles are attracted to the surface of the tube，which due to the magnetic distribution [23]. The migration of the nanoparticles to the surface of the tube leads to an increase in the concentration of local particles on the surface of the tube, and then the heat can be transferred to the nanoparticles, leading to an enhance in the local thermal conductivity.…”

Section: Influence Of Magnetic Field Strength On Heat Transfer Coefficient Of Magnetic Nanofluidsmentioning

confidence: 99%

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

et al. 2022

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This paper focuses on the convective heat transfer characteristics of Fe3O4 /Water magnetic nanofluids under laminar and turbulent conditions. After verifying the accuracy of the experimental apparatus, the effects of magnetic field strength, concentration, Reynolds number and temperature on the convective heat transfer coefficient have been studied. The convective heat transfer characteristics of nanofluids under laminar and turbulent flow conditions were studied in depth, and the influence of each factor on the heat transfer coefficient was analyzed by orthogonal experimental design method. Under the laminar flow conditions, the convective heat transfer of magnetic nanofluids performed best when the Reynolds number was 2000, the magnetic field strength was 600, the temperature was 30? and the concentration was 2%. And the convective heat transfer coefficient (h) increased by 3.96% than the distilled water in the same conditions. In turbulent state, the convective heat transfer of magnetic nanofluids performed the best when the Re was 6000, the magnetic field strength was 600, the temperature was 40? and the concentration was 2%. The h increased by 11.31% than the distilled water in the same Reynolds number and the magnetic field strength conditions.

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Section: Influence Of Magnetic Field Strength On Heat Transfer Coefficient Of Magnetic Nanofluidsmentioning

confidence: 99%

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

et al. 2022

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“…However, nanofluids have a much lower transmittance than pure water in the wavelength range of 250-1370 nm, as shown in Figure 8. By introducing representative studies related to the optical properties of nanofluids, Tong et al [39] and Shin et al [41] experimentally investigated the optical transmittance of Fe3O4, multi-walled carbon nanotubes (MWCNTs), and MWCNT/Fe3O4 hybrid nanofluids. In their experiments, the maximum optical transmittance of the Fe3O4 nanofluid decreased by approximately 5% when the nanofluid concentration increased from 0 to 0.005 wt% at a wavelength of 750 nm.…”

Section: Optical Properties Of Nanofluidsmentioning

confidence: 99%

“…The formation of a chain-like nanoparticle cluster in the nanofluid under an external magnetic field could cause this phenomenon. Shin et al [41] reported that the photothermal energy conversion performance of a magnetic nanofluid increased under an external magnetic field. As shown in Figure 16, the temperature increase of the 0.2 wt% MWCNT/Fe3O4 = 1/1 hybrid nanofluid increased with increasing magnetic field intensity.…”

Section: Photothermal Energy Conversion Performance Of Nanofluidsmentioning

confidence: 99%

“…Variation of temperature with time for the 0.2 wt% MWCNT/Fe3O4 hybrid nanofluid under different magnetic intensities[41]; 2020, Elsevier.…”

mentioning

confidence: 99%

“…Variation of temperature with time for the 0.2 wt% MWCNT/Fe 3 O 4 hybrid nanofluid under different magnetic intensities[41]; 2020, Elsevier. Total stored energy in a 0.2 wt% MWCNT/Fe3O4 hybrid nanofluid during heating under different magnetic intensities[41]; 2020, Elsevier.…”

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confidence: 99%

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Nanoparticles have been thoroughly investigated in the last few decades because they have many beneficial and functional qualities. Their capability to enhance and manipulate light absorption, thermal conductivity, and heat transfer efficiency has attracted significant research attention. This systematic and comprehensive work is a critical review of research on the photothermal energy conversion performance of various nanofluids as well as the recent advances in several engineering applications. Different nanofluids used in the photothermal energy conversion process were compared to identify the suitable applications of each nanofluid in thermal systems. An analysis of the previous investigations based on experimental and numerical studies has established that nanomaterials have the potential to increase the efficiency of solar thermal systems.

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Magnetic effect on the enhancement of photo-thermal energy conversion efficiency of MWCNT/Fe3O4 hybrid nanofluid

Cited by 54 publications

References 52 publications

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

Review of the Photothermal Energy Conversion Performance of Nanofluids, Their Applications, and Recent Advances

Revival of Functional Nanofluid Photothermal Materials for Solar Still Applications

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