Experimental study of boiling heat transfer in a microchannel with nucleated-shape columnar micro-pin-fins

Liao, Wun-Rong; Chien, Liang-Han; Ghalambaz, Mohammad; Yan, Wei‐Mon

doi:10.1016/j.icheatmasstransfer.2019.104277

Cited by 38 publications

(7 citation statements)

References 24 publications

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“…They found that an increase in heat flow had an influence on the openness, surface tension, and length from the channel bottom, including the average bubble size, pore volume, and pore structure. Liao [42] reported a layered micro printing design with a nucleated shape that optimizes boiling heat transfer performance.…”

Section: How To Optimized Heat Exchangementioning

confidence: 99%

Recent Developments on Smooth Surfaces with Fluid for Nano, Micro, and Macro Surface Morphology

Singh¹,

Meena²

2022

IJERA

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The most important phase shifter effect for boiling has numerous uses, including condensing electrical equipment, industrial use, heat pipes, normalising nuclear reactors, and many more. Advancement boiling efficiency of heat transfer is necessary to make the diverse manufacturing applications greater energy efficient. This paper only focusing on the understanding of the boiling in context and also including generation of bubble, growth and dynamic. Here the performance of refrigerants on smooth surface coated with nano/micro/marco structured surface .Three perceived heat transfer goals are obtained using various techniques to separates: reducing ΔT pool HTC improvement and CHF improvement. The paper advances idea of how fluid surface interaction affects the performances and provides recommendations for researchers to adhere until evaluating the effectiveness of improved surface. It will allow the scientific societies and sectors to choose the best plain modification method for a specific fluid of concern on specific surface.

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Section: How To Optimized Heat Exchangementioning

confidence: 99%

Recent Developments on Smooth Surfaces with Fluid for Nano, Micro, and Macro Surface Morphology

Singh¹,

Meena²

2022

IJERA

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“…Doubled-layered microchannel heat sinks have advantages in cooling performance and flow characteristics [19,20]. Micro pin fins can increase turbulence disturbance and enhance the heat transfer in microchannels [21][22][23]. Cross-linked microchannels disrupt the boundary layers to enhance the heat transfer coefficient [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Cooling Performance of a Hybrid Microchannel and Jet Impingement Heat Sink

et al. 2022

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Thermal management at a high heat flux is crucial for high-power electronic devices, and jet impingement cooling is a promising solution. In this paper, a hybrid heat sink combining a microchannel and jet impingement was designed, fabricated and tested in a closed-loop system with R134a as the working fluid. The thermal contact resistance was measured by using the steady-state method, and the thermal resistance of the heat sink was obtained at different heat fluxes and flow rates. The maximum heat dissipation of 400 W/cm2 is achieved on a heater area of 210 mm2, and the thermal resistance of the heat sink is 0.11 K/W with a pressure drop of 13.5 kPa under a flow rate of 1.90 L/min. Low thermal resistance can be achieved for the hybrid heat sink stemming from the highly-dense micro-jet array with separate inflow and outflow microchannels.

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“…The cases of heat transfer with variable heat transfer coefficient along the passive device varies has also be investigated [28][29][30][31][32][33][34][35]. Such analysis helps in providing the needed information on the efficiency, effectiveness, and design date of the extended surfaces under various boiling modes [33][34][35][36][37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Unsteady state heat transfer analysis of a convective-radiative rectangular fin using Laplace Transform-Galerkin weighted residual method

Sobamowo¹,

Yinusa²,

Dere³

et al. 2022

J., eng., them. sci.

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The present investigation is concerned with the development of non-power series solutions for the unsteady state nonlinear thermal model of a radiative-convective fin having temperature-variant thermal conductivity using Laplace transform-Galerkin weighted residual method. In the study, it is demonstrated that the symbolic solutions do not involve a large number of terms, complex mathematical analysis, high computational cost, and time as compared to the power series solutions in previous studies. The solutions allow effective predictions of the extended surface thermal performance over a large domain and time. The results of the non-power series solutions are verified numerically, and very good agreements are established. Parametric studies are carried out with the aid of the symbolic non-power solutions. It is found that as the conductive-convective and conductive-radiative increase, temperature distribution decreases since the rate of heat transfer becomes augmented and hence, the fin thermal efficiency is improved. Additionally, when the thermal conductivity of the fin increases, the temperature distribution in the passive device increases. The temperature increases with time at the different positions in the fin. Following the time histories of the solution, it is shown that unsteady state solutions converge to a steady state as time progresses. It could therefore be stated the developed non-power series analytical solutions provide a good platform for comparison of the nonlinear thermal analyses of fins in thermal systems.

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Experimental study of boiling heat transfer in a microchannel with nucleated-shape columnar micro-pin-fins

Cited by 38 publications

References 24 publications

Recent Developments on Smooth Surfaces with Fluid for Nano, Micro, and Macro Surface Morphology

Recent Developments on Smooth Surfaces with Fluid for Nano, Micro, and Macro Surface Morphology

Experimental Study on Cooling Performance of a Hybrid Microchannel and Jet Impingement Heat Sink

Unsteady state heat transfer analysis of a convective-radiative rectangular fin using Laplace Transform-Galerkin weighted residual method

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