Heat transfer enhancement in T-Tube convertor concept using nanofluids

Yousefi, Tooraj; Jaberi, B.; Noohdani, A.Y.; Farahbakhsh, B.; Saghir, M.Z.

doi:10.1016/j.ijthermalsci.2015.01.010

Cited by 3 publications

(4 citation statements)

References 23 publications

(13 reference statements)

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“…In another experiment, for impingement of nanofluid via a slot jet, it was justified that, 0.0597 wt% ϒAl 2 O 3 -H 2 O nanofluid is most optimum concentration, for maximum heat transfer at a range of Reynold numbers [5]. Large-Eddy simulation and experiments have been conducted to characterize the predictions of the flow from the numerical simulations to control the heat transfer on the impinging wall.…”

Section: Literature Surveymentioning

confidence: 99%

“…where, U = fluid velocity, D = width of planar jet at the impingement, ρ = Fluid Density & μ = Fluid Viscosity For flat plate systems, laminar flow occurs when the Reynolds number is below a critical value of approximately 5x10 5 , and for circular tube the transition range is typically 2,300.…”

Section: Laminar and Turbulent Flowmentioning

confidence: 99%

“…Figure 3 shows the flow over a flat surface. The laminar boundary layer starts the transition at a Reynolds number around 5x10 5 with a sudden jump in the heat transfer coefficient, and then gradually coming down in the turbulent region, but still above the laminar region. For a smooth circular tube, the transition from laminar to turbulent starts at a Reynolds number around 2300.…”

Section: Heat Transfer Coefficient Relation With Reynolds Numbermentioning

confidence: 99%

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Numerical Investigation Of The Impingement Of A Planar Jet of Nanofluids On A V-Shaped Plate

Bhatt¹

2021

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An effective way to enhance the heat dissipation in industrial heat transfer devices is impinging of the fluid jet. Due to the higher dissipation heat flux, jet flows can be used for to control the temperature of high intensity heat sources. Traditional fluids such as water, ethylene and propylene glycol, and oils offer heat transfer capabilities that are adequate for many applications. There are several options to increase the effectiveness of the heat transfer characteristics for these fluids, for instance, using jet flows, and increasing the surface area of the heat transfer object. However, with the advances in nanotechnology and material science, nanofluids offer an attractive alternative option. Nanofluids refer to a dispersion of metallic or non-metallic particles with dimensions smaller than 100 nm in a base fluid like water, ethylene and propylene glycol, oil. Nanofluids have been shown to have an enhanced heat transfer characteristic, because of their high thermal conductivity. In this Project, Heat transfer enhancement of an impinging liquid jet on a V-shape target plate cooling system, has been investigated numerically, by replacing the base fluid, water, with Al2O3–water nanofluid. To conduct the research, literature review on nanofluid heat transfer enhancement, jet impingement, and nanofluids jet impingement, has been conducted. Numerical model has been built using ANSYS Workbench 16.0. After validating the numerical code with the previous experimental data, the effect of nanoparticles volume fraction, jet-surface distance and jet’s Reynolds number on the heat transfer enhancement has been investigated

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Section: Literature Surveymentioning

confidence: 99%

Section: Laminar and Turbulent Flowmentioning

confidence: 99%

Section: Heat Transfer Coefficient Relation With Reynolds Numbermentioning

confidence: 99%

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Numerical Investigation Of The Impingement Of A Planar Jet of Nanofluids On A V-Shaped Plate

Bhatt¹

2021

Preprint

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“…Nanofluids could be an excellent alternative to conventional coolants. It has been found [28,[54][55][56][57][58][59] that in different applications, nanofluids are capable of increasing the thermal conductivity of the coolant in the range of 15-75% depending on the types of nano-particles and their relative concentrations.…”

Section: Pem Fuel Cell Thermal Managementmentioning

confidence: 99%