Investigation of the flow structure and heat transfer intensity of surfaces with split plate finning

Baranyuk, Alexandr; Nikolaenko, Yu. E.; Rohachov, Valerii Andriiovych; Терех, А. М.; Krukovskiy, P. G.

doi:10.1016/j.tsep.2019.03.018

Cited by 23 publications

(3 citation statements)

References 34 publications

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“…This leads to the deterioration of heat transfer between fins and air flow. Partial cutting of fins into narrow sections, as it was done on the type 3 sample, leads to: destruction of the growing boundary layer, its disruption from the edges of the cut narrow parts, splitting it into thinner sections, increasing the flow disturbance in the area of fins cutting [15]. The combination of these factors and increasing the flow velocity in the inter-fin channels leads to an increase of the heat transfer intensity of the heat sink of type 3 by 3555% in comparison with that of type 1.…”

Section: Heat Transfermentioning

confidence: 99%

“…In [14], eight types of surfaces with different cutting depths and angles of turning were experimentally investigated. The influence of fins cutting and turning of cut parts on thermal and aerodynamic characteristics of heat sinks is studied in [15] by means of CFD modelling. The authors [16] have experimentally established that the greatest intensifying effect is observed at a relative depth of fin cutting of 0.6.…”

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confidence: 99%

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Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Terekh,

Rudenko,

Alekseik

2024

Archives of Thermodynamics

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Heat transfer and aerodynamic drag of novel small-sized heat sinks with lamellar fins, designed for electronic cooling, were experimentally investigated under conditions of forced convection in the range of Reynolds numbers 1 250–10 500. It was found that a gradual reduction in the fin spacing from 6 mm to 3 mm with a 29° angle of taper between the outermost fins leads to an increase in the heat transfer intensity by 15–32% with a significant increase in aerodynamic drag compared to the surface with a constant fin spacing of 6 mm. Incomplete cross-section cutting of fins at the relative depth of 0.6 in addition to the gradual reduction in the fin spacing provides aerodynamic drag decrease by 5–20% and increase of heat transfer intensity by 18–20% in comparison with the similar heat sink without fins cutting. Proposed novel designs of heat sinks enabled us to decrease by 7°С–16°С the maximum overheating of the heat sink's base in the flow speed range from 2.5 m/s to 7.5 m/s at constant heat load. To ensure a constant value of maximum overheating of the heat sink base the inlet flow velocity for the surface with constant fin spacing should be 1.6–2 times higher than that for the heat sink with 29° taper angle between outermost fins and partially fins cutting. In this case, the aerodynamic drag for the latter will be higher only by 1.6–2.7 times, which is quite acceptable.

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Section: Heat Transfermentioning

confidence: 99%

mentioning

confidence: 99%

Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Terekh,

Rudenko,

Alekseik

2024

Archives of Thermodynamics

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“…Powerful LED light sources are cooled by systems based on different operation principles: passive heat sinks [6,7], thermoelectric coolers [8,9], piezoelectric fans [10], and jet coolers [11]. There also are experimental cooling systems based on the electronic wind phenomenon [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Electro-optical characteristics of an innovative LED luminaire with an LED matrix cooling system based on heat pipes

Pekur¹,

Сорокин²,

Nikolaenko³

et al. 2020

SPQEO

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Widespread use of energy-saving LED lighting systems powered by renewable energy sources, solar energy in particular, will contribute to the improvement of global ecology. One of the structural elements of such lighting systems is LED luminaire. The authors of this article perform a first ever experimental study of electro-optical characteristics of the basic version of a compact high-power LED luminaire for indoor use. The particular feature of this lighting device is that its cooling system for the LED light source is based on heat pipes and concentric cooling rings. Such design allows ensuring the required cooling efficiency of the LED matrix. The revealed trends in optical and electrical parameters during temperature stabilization indicate that the proposed cooling system is highly efficient in maintaining normal thermal conditions of LED light sources with a power of up to 140.7 W and a luminous flux of up to 15083 lm. The results on determining spatial distribution of luminous flux of these luminaires indicate that they may be used for lighting large rooms with high ceilings. Scaling the basic modular design version of the cooling system allows increasing the power of the LED light source up to 600 W.

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Research on Heat Transfer Characteristics of Air Cooling Plate Embedded with Heat Pipes

Qian

2019

Lecture Notes in Electrical Engineering

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Investigation of the flow structure and heat transfer intensity of surfaces with split plate finning

Cited by 23 publications

References 34 publications

Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Electro-optical characteristics of an innovative LED luminaire with an LED matrix cooling system based on heat pipes

Research on Heat Transfer Characteristics of Air Cooling Plate Embedded with Heat Pipes

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