Enhancement Evaluation Criteria for Pool Boiling Enhancement Structures in Electronics Cooling: CHF Enhancement Ratio (ER-CHF) and Enhancement Index (EI)
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引用次数: 0
Abstract
Extensive research shows the necessity of efficient cooling systems to enable electronic components to operate at high-performance levels for a sustained period. While conventional methods have served the cooling needs so far, rising computational power, energy efficiency, and sustainability requirements call for improved techniques. The literature shows the effectiveness of two-phase systems in cooling electronic components like microprocessors. The literature further describes various enhancement mechanisms to elevate the Critical Heat Flux (CHF) and Heat Transfer Coefficient (HTC) in these systems. While a high CHF is desired, having a high HTC is equally important to keep the operating temperatures below a permissible limit. The present article summarizes enhancement structures found in the literature that are suitable for electronic cooling to provide this dual enhancement in CHF and HTC. New enhancement evaluation criteria are introduced that also consider the surface temperature limit imposed by the electronic components. The CHF Enhancement Ratio (ERCHF) represents the ratio of CHF for enhancement structures to the CHF for a plain surface, and the Enhancement Index (EI) represents the ratio of wall superheat at CHF with the enhanced structures, to the wall superheat at its respective CHF condition for a plain surface.
期刊介绍:
The Journal of Enhanced Heat Transfer will consider a wide range of scholarly papers related to the subject of "enhanced heat and mass transfer" in natural and forced convection of liquids and gases, boiling, condensation, radiative heat transfer.
Areas of interest include:
■Specially configured surface geometries, electric or magnetic fields, and fluid additives - all aimed at enhancing heat transfer rates. Papers may include theoretical modeling, experimental techniques, experimental data, and/or application of enhanced heat transfer technology.
■The general topic of "high performance" heat transfer concepts or systems is also encouraged.