Spray Impingement Cooling: The State of the Art

Gao, Xuan; Li, Ri

doi:10.5772/intechopen.80256

Cited by 17 publications

(10 citation statements)

References 72 publications

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“…Moreover, this method reduces the effect of the thermal boundary layer acting as a thermally insulating medium, as a result of which it is suitable for compact designs that require high cooling capacity [86]. Nevertheless, spray cooling requires a significant pressure drop in the nozzle, which impedes its performance [87]. Figure 35 shows the main components of a jetimpingement based cooling system.…”

Section: Control Of Heat Dissipationmentioning

confidence: 99%

Emerging Trends and Challenges in Thermal Management of Power Electronic Converters: A State of the Art Review

Rahman,

Moghassemi,

Arsalan

et al. 2024

IEEE Access

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Recently, the thermal management of power electronic converters has gained significant attention due to the continuous trend of developing very compact power electronic converters with high power density. With the evolution of power semiconductor devices, high operating temperatures and large thermal cycles have become possible, necessitating a significant improvement in thermal system designs. Researchers have made significant efforts to develop effective thermal management systems for improving the reliability and lifetime of power electronic converters. This article intends to present a thorough review of thermal management systems employed in power electronics cooling. The applied thermal management techniques have been reviewed from the perspective of electrical parameter regulation and heat dissipation control. Regulation of electrical parameters involves active thermal control, which is a method for controlling junction temperature and thermal cycling of power semiconductor devices. The active thermal control implementation processes reviewed in this article consist of increasing overload capacity, manipulating switching and conduction losses, employing modified modulation process, balancing thermal stress at the converter level, and controlling thermal stress at the system level. Control of heat dissipation can be achieved through direct and indirect cooling of power electronic converters with air or liquid as the coolant. The effectiveness and implementation methods of these cooling techniques, such as channel cooling, phase change material-based cooling, immersion cooling, jet impingement and spray cooling, are reviewed in this paper. Moreover, performance-enhancing ideas and challenges for these techniques are discussed. The primary objective of this review paper is to bridge the existing gap in the literature by offering a comprehensive comparison of commonly employed thermal management techniques. INDEX TERMSActive thermal control (ATC), Power semiconductor device (PSD), Microchannel, Spray cooling, Jet impingement, Immersion cooling, Phase change material (PCM), and Active cooling.

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Section: Control Of Heat Dissipationmentioning

confidence: 99%

Emerging Trends and Challenges in Thermal Management of Power Electronic Converters: A State of the Art Review

Rahman,

Moghassemi,

Arsalan

et al. 2024

IEEE Access

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“…Why spray cooling has been selected as an alternative to extensively used immersion cooling and how to determine the parameters of spray cooling are the challenges in this design. Tracking the motion trajectory of the coolant liquid out of the sprayer, spreading out of the sprayer holes, receding due to viscous effects, splashing by droplet collision, stationary film generating by fluid viscosity on the solid surface, liquid file flowing by liquid momentum and gravity, and liquid flooding and draining will happen in sequence [19,20]. The interfacial flow of coolant liquid film on the heat sink surface determines the flow pattern of film, through which heat transfer will happen.…”

Section: Design Of Digital Boiler 31 Spray Cooling Mechanism-theorymentioning

confidence: 99%

Heat Recovery from Cryptocurrency Mining by Liquid Cooling Technology

Chen¹,

Chen²,

Zhao³

2023

Recent Updates in HVAC Systems

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Bitcoin, the world’s largest cryptocurrency, currently consumes an estimated 150 terawatt-hours of electricity annually. Most cryptocurrency miners have dissipated the thermal energy from mining chips to the ambient by air cooling circulation. To recover the thermal energy from cryptocurrency mining, an advanced heat recovery system has been developed, prototyped, and tested. The cryptocurrency miners in an enclosure are cooled by spraying dielectric coolant, then the coolant heated by the mining chips is collected and driven through the spiral heating coil immersed in a 190 L hot water tank. High efficient liquid spray cooling mechanism is the core of this design, by which maximum coolant temperature can reach 70°C in the field trail within the safe temperature limits of mining chips. In practice, this record temperature not only meets the minimum legionellosis risk management requirements for building water systems defined by ANSI/ASHRAE Standard 188-2018 but also provides high-grade energy input to the building, district heating system, or booster heat pump/boiler if needed. In theory, the conventional concept of PUE based on energy has been redefined by the PUE based on exergy. The energy-based PUE is 1.03 and the exergy-based PUE is 0.95 in this case, which can truly reflect the useful energy flow, exergy, in the heat reclaim system.

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“…The role of the thermal boundary layer acting as a thermally insulating layer in channel cooling and impingement cooling designs is minimized in this method, so it is known as an efficient concept widening its application in high capacity cooling and general compact designs [14]. However, there are important parameters restricting performance of spray-based thermal management designs, and the most important one is the high pressure drop required in the nozzle to produce spray droplets [15].…”

Section: Introductionmentioning

confidence: 99%

“…However, in the droplet level analysis, the impact of droplet flow (single droplet or droplet burst) on the film flow (dry surface, stationary film, and flowing film) is analysed. Obviously, in the spray level examination approach, deep understanding of detailed heat transfer mechanisms (convection between hot surface and film flow, nucleate boiling on the hot surface, conduction in film flow, and interfacial evaporation from liquid film to surroundings) is missing unlike the droplet level [15]. The categories of enhancement ideas exploited in this field are illustrated in FIGURE 5 and a detailed description is provided in TABLE 4.…”

Section: A Introduction To Spray Coolingmentioning

confidence: 99%

A Comprehensive Review on the Core Thermal Management Improvement Concepts in Power Electronics

et al. 2020

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A heat sink is a specific type of heat exchanger integrated with heat generating devicesmostly electronicsfor the sake of thermal management. In the design procedure of heat sinks, several considerations such as manufacturing cost, reliability, thermal and hydraulic performance have to be included. In the past few decades, the prevailing trend of electronics design miniaturization has led to highpower-density systems necessitating high performance cooling concepts. This paper intends to provide a comprehensive review on various employed heat transfer enhancement techniques in cooling procedures of electronics thermal management devices, with a focus on core ideas. The main motivation is to give a rapid overview on the key concepts in different high-performance cooling designs along with a quantitative comparison between the different concepts all in one reference which is missing in literature. For this, the key idea of each design is firstly categorized, and then a detailed description is provided for each case. The discussed categories consist of concepts based on channel cooling in various scales, phase transition, jet impingement, spray cooling and hybrid design. At the end, quantitative comparison is illustrated for thermal and hydraulic performance of a selection of the reviewed references covering all these different categories. Based on this comparison, an overview on thermo-hydraulic performance of the presented categories is provided, and recommendations for future studies are given based on this and the detailed review of references.

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Spray Impingement Cooling: The State of the Art

Cited by 17 publications

References 72 publications

Emerging Trends and Challenges in Thermal Management of Power Electronic Converters: A State of the Art Review

Emerging Trends and Challenges in Thermal Management of Power Electronic Converters: A State of the Art Review

Heat Recovery from Cryptocurrency Mining by Liquid Cooling Technology

A Comprehensive Review on the Core Thermal Management Improvement Concepts in Power Electronics

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