首页|Hybrid nanofluid spray cooling performance and its residue surface effects: Toward thermal management of high heat flux devices
Hybrid nanofluid spray cooling performance and its residue surface effects: Toward thermal management of high heat flux devices
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NSTL
Elsevier
In recent years, heat dissipation in high heat flux devices remarkably increased and it is anticipated to reach unprecedented levels in future devices, mainly due to increased power density, compact packaging and high-performance requirements. To address this challenge, in current research, we initially investigate the spray cooling performance and spray residue surface effects of the next generation thermal fluid, called hybrid nanofluid. Subsequently, we investigate the hybrid nanofluid spray cooling potential to address heat dissipation issues in a high heat flux application, that is, the electric vehicle (EV) high power electronics. Our results demonstrate that the critical heat flux (CHF) enhancement up to 126% can be achieved using the hybrid nanofluid spray cooling compared to water spray cooling. The hybrid nanofluid and its spray residue characterization further suggest that high CHF in hybrid nanofluid spray cooling may be due to high latent heat of vaporization and residue wetting and wicking effects. Moreover, the spray cooling efficiency and Nusselt number obtained for hybrid nanofluid spray cooling is more than twice that of water spray cooling. Furthermore, our results indicate that the hybrid nanofluid spray cooling can keep high power electronics of current and future electric vehicles below their failure temperatures, while the same cannot be achieved using water and dielectric fluid spray cooling.
Critical heat fluxEV high power electronicsHigh heat flux devicesHybrid nanofluid spraySpray residue
Riaz Siddiqui F.、Qiu H.、Tso C.-Y.、Chao C.Y.H.、Chung Fu S.
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Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology
School of Energy and Environment City University of Hong Kong
Department of Building Environment and Energy Engineering Department of Mechanical Engineering The Hong Kong Polytechnic University
Department of Mechanical Engineering The University of Hong Kong
NSTL
Elsevier
