A review of the capabilities of high heat flux removal by porous materials, microchannels and spray cooling techniques

Smakulski, Przemysław; Pietrowicz, Sławomir

doi:10.1016/j.applthermaleng.2016.05.096

Cited by 172 publications

(39 citation statements)

References 92 publications

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“…Finally, due to the two reasons previously described, the limits where cooling with finned or pinned heat sinks in conjunction with a source of air flow is adequate are being reached. Thus, it is necessary to use direct cooling systems such as the liquid cooling, both forced convection and immersion [7], jet impingement [8], spray cooling [9] and indirect systems such as the use of heat pumps, thermoelectric modules [10], heat pipes [11] and phase change materials, which transport heat to be dissipated in a simpler way far from the hot spot.…”

Section: Electronics Thermal Managementmentioning

confidence: 99%

Multi-Objective Particle Swarm Based Optimization of an Air Jet Impingement System

et al. 2019

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Air jet impingement systems have proven to be a very efficient way of heat transfer in single phase flows, which has allowed them to be applied in several industries. However, the complexity of the physical phenomena that take place in the cooling or heating processes makes the task of designing and sizing a system of this type very difficult. The objective of this work is to develop a methodology for the optimization of the impingement plate for electronic components cooling systems. The component chosen to exemplify this work is an insulated gate bipolar transistor (IGBT) such as those employed in photovoltaic inverters. The proposed methodology is divided into the thermo-hydraulic calculation process and the optimization of the system. This optimization is carried out using a multi-objective particle swarm optimization (PSO) algorithm that seeks the best compromise between two variables: Component temperature and manufacturing time of the impingement plate. The result is a calculation tool that can quickly find the solution that meets the requirements of the designer without the need to evaluate all possible solutions.

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Section: Electronics Thermal Managementmentioning

confidence: 99%

Multi-Objective Particle Swarm Based Optimization of an Air Jet Impingement System

et al. 2019

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“…Machining of micro/mini channel profiles on various work materials has gained research interest among several groups because of higher heat dissipation capability by allowing the cooling fluids to flow through them. 1,2 Various conventional and non-conventional machining methods were reported and are being practiced to make these channels. Haghbin et al 3 used abrasive water-jet micro-milling to machine the channels on 316L stainless steel and aluminum alloy AA6061T6.…”

Section: Introductionmentioning

confidence: 99%

A study on geometrical features of electric discharge machined channels on AA6061-4%B₄C composites

Gudipudi

Selvaraj

Chandra

et al. 2020

Measurement and Control

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The aluminum alloy AA6061-4wt.% boron carbide (B4C) particulate metal matrix composites were fabricated by the stir casting method. The die-sinker electric discharge machining was performed to make the rectangular mini channels on these composites. The full factorial experimental design that consists of three input conditions, the current ( I), discharge duration ( T-on), and discharge idle time ( T-off) at three levels each (33 = 27 total runs), was used for experimentation. The volume, V, the taper, θ (along with the depth), the lateral overcut (along the width), and the difference in depth, Δ d (between total depth and depth up to the tapered profile) at entrance and exit cross-sectional profiles of the channel were considered as output responses. The θ, lateral overcut, and Δ d were calculated from the entrance and exit profiles which were obtained by extracting the data points of each channel with the help of an optical profile projector. The computer-aided geometric model was developed to estimate the volume. A set of optimum electric discharge machining parameter levels were identified for maximum V and a minimum of θ, lateral overcut, and Δ d. Analysis of variance was performed to identify the significant parameter and the contribution toward output responses. Results showed that the volume was found to be maximum at higher I (8 A) and lower T-On (25 µs) conditions. The taper was found to decrease with the increase in current but both lateral overcut and Δ d increased. Both I and T-On are found to be the significant parameters affecting both V and Δ d, whereas current is for θ and lateral overcut. In some cases, it was observed that there is a considerable difference in the θ and the lateral overcut values in the entrance and exit portions for the same channel. It is because of the randomly dispersed B4C particles which alter the material removal mechanism.

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“…For compact integrated circuits (ICs) & laser mirror the highest value of q o recorded is 10 2 W/cm 2 [1], for aeronautics and VLSI 10 3 W/cm 2 required to be dissipated [1] and for fusion reactor and defense applications 10 4 W/cm 2 heat flux removal is recorded [2]. A MCHS is an right choice to dissolve heat fluxes up to 10 3 W / cm 2 [1] as it provides a heat rejection area to volume ratio of approximately 15,294 m 2 / m 3 compared to 650 m 2 / m 3 for a closely packed heat exchanger [3]. Micro-channels act as flow paths for the working fluid in dimensions ranging from 10 to 1000 micrometres [4].…”

Section: Introductionmentioning

confidence: 99%

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

Chandra¹,

Prakash²

2019

IJITEE

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Demand for greater capability of electronic devices in very small volume for compactness has affected huge augmentations in heat indulgence at all stages of device, electronic wrapping, test section and system. Latest cooling systems are hence needed to eliminate the released heat while maintaining compactness of the device. The micro-channel heat sink (MCHS) is ideal for this situation as it consists of channels of micron size which offers an extended surface area to volume ratio of approximately 15.294 m2 / m3 compared to 650 m2 / m3 for a typical heat compact exchanger. A comprehensive review has been done for consequence of heat flux (qo ), mass flux (G), vapour quality (x) and channel geometries at flow patterns and heat dissipation of MCHS. The study show that to increase the rate of heat transfer by using different channel geometries like converging-diverging, segmented etc. compared to conventional rectangular micro-channels has given better cooling effect The Flow patterns like bubbly, slug flow are associated with nucleate boiling dominated in low vapour quality and annular flow also given the significant effect on heat transfer in higher vapour quality region

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A review of the capabilities of high heat flux removal by porous materials, microchannels and spray cooling techniques

Cited by 172 publications

References 92 publications

Multi-Objective Particle Swarm Based Optimization of an Air Jet Impingement System

Multi-Objective Particle Swarm Based Optimization of an Air Jet Impingement System

A study on geometrical features of electric discharge machined channels on AA6061-4%B₄C composites

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

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A review of the capabilities of high heat flux removal by porous materials, microchannels and spray cooling techniques

Cited by 172 publications

References 92 publications

Multi-Objective Particle Swarm Based Optimization of an Air Jet Impingement System

Multi-Objective Particle Swarm Based Optimization of an Air Jet Impingement System

A study on geometrical features of electric discharge machined channels on AA6061-4%B4C composites

Impact of Channel Geometries and Flow Patterns On Micro-Channel Heat Sink Performance

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A study on geometrical features of electric discharge machined channels on AA6061-4%B₄C composites