On the evaporative spray cooling with a self-rewetting fluid: Chasing the heat

Tsang, Sung; Wu, Zhi-Hao; Lin, Chia‐Hsuan; Sun, Chih-Ming

doi:10.1016/j.applthermaleng.2017.12.084

Cited by 18 publications

(4 citation statements)

References 26 publications

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“…On the other hand, to meet the heat dissipation requirements of next-generation power electronics and devices, further development of advanced spray cooling is urgently needed. There are multiple ways to improve the spray cooling performance, including selection and alteration of the working fluid [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57], optimization of spray parameters [58][59][60][61][62] or systems [17,[63][64][65][66][67][68][69][70][71][72][73][74][75][76], and surface engineering. The first two methods are based on the fluid side, which is limited in affecting liquid-wall interactions.…”

Section: Introductionmentioning

confidence: 99%

Spray Cooling on Enhanced Surfaces: A Review of the Progress and Mechanisms

Wang

Jiang

2021

Journal of Electronic Packaging

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The rapid development of electronics, energy and propulsion systems has led us to the point where their performances are limited by cooling capacities. Heat fluxes of 10~100, even over 1,000 W/cm2 need to be dissipated with minimum coolant flow rate in next-generation power electronics. Spray cooling is a high heat flux, uniform and efficient cooling technique proven effective in various applications. However, its cooling capacity and efficiency need to be further improved to meet next-generation ultrahigh-power applications. Engineering of surface properties and structures can fundamentally affect the liquid-wall interactions, thus becoming the most promising way to enhance spray cooling. However, the unclear mechanisms of surface-enhanced spray cooling cause lack of guiding principles for surface design. Here, progress in spray cooling on surfaces with structures of different scales are reviewed and their performances evaluated and compared. Spray cooling can achieve critical heat flux (CHF) above 945 W/cm2 and heat transfer coefficient (HTC) up to 57 W/cm2K on structured surfaces for pressurized nozzle and CHF and HTC up to 1250 W/cm2 and 250 W/cm2K, respectively, on a smooth surface with the assistance of secondary gas flow. CHF enhancement of 110% was achieved on hybrid micro- and nanostructured surfaces. A clear map of enhancement mechanisms is proposed after analysis. Some future concerns are also proposed. This work helps the understanding and design of engineered surfaces in spray cooling and provides insights for interdisciplinary applications of heat transfer and advanced engineering materials.

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Section: Introductionmentioning

confidence: 99%

Spray Cooling on Enhanced Surfaces: A Review of the Progress and Mechanisms

Wang

Jiang

2021

Journal of Electronic Packaging

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“…non-azeotropic, high-carbon alcohol solutions) exhibits a parabolic surface tension-temperature relationship with a well-defined minimum (Vochten & Petre 1973) with its parabolicity increasing with increasing alcohol concentration. Due to this peculiar behaviour, self-rewetting fluids were shown to provide high critical heat fluxes as compared to normal fluids in various cooling systems, including heat pipe (Savino et al 2007;Wu 2015) and spray cooling (Tsang et al 2018). However, the underlying physics in configurations involving self-rewetting fluids is still poorly understood.…”

Section: Introductionmentioning

confidence: 99%

“…2007; Wu 2015) and spray cooling (Tsang et al. 2018). However, the underlying physics in configurations involving self-rewetting fluids is still poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Motion of self-rewetting drop on a substrate with a constant temperature gradient

Chen

Liu

et al. 2021

J. Fluid Mech.

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“…Thus self-rewetting fluid streams 7 towards hotter place within specific temperature gradient range, whose direction is opposite to ordinary Marangoni flow. Application of self-rewetting fluids has been proved to enhance heat transfer performance in liquid evaporation 10,11 , spray cooling 12 , heat pipes [13][14][15] , microchannel 16 and pool boiling [17][18][19][20] . Hu et al 17 On the other hand, surface modification methods can be classified in macroscale (finned surface 21 , porous mesh 22 , porous foam 23,24 ), microscale (surface roughening 25 , patterning micro-fins 26,27 , porous microstructure coating 28 , micro-channels with reentrant cavities 29 , dendritic porous microstructures 30 , micro-dimpled surface 31 , graphite coating 32 ) and nanoscale (nanoparticles 33,34 , nanoporous 35 and nano film coating 36 , nanofluid induced nanoparticles deposition 37 ) surface enhancement techniques…”

Section: Introductionmentioning

confidence: 99%