The Challenges of Electronic Cooling: Past, Current and Future

Chu, Richard C.

doi:10.1115/1.1839594

Cited by 58 publications

(23 citation statements)

References 8 publications

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“…The preliminary power measurement comes from a wattmeter (2). Thermocouples' signals, taken by dry-well calibrator (7), are sent to data logger (6) and then the PC (5) receives it.…”

Section: Methodsmentioning

confidence: 99%

“…The main module stands on a teflon base (5). The copper bar is insulated with a layer of ceramic insulation (7).…”

Section: Methodsmentioning

confidence: 99%

“…Bergles [6], Chu et al [7] have long recognized the difficulties associated with the cooling of high power density devices. Dielectric fluids have been used in cooling/heat transfer systems since the late 1960's.…”

Section: Introductionmentioning

confidence: 99%

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Pool boiling heat transfer on surfaces with plain minifins and minifins with perforated foil

Nadstawna

Pastuszko

2014

MATEC Web of Conferences

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Abstract. The paper describes experimental study results for three kinds of enhanced surfaces (smooth surface, plain minifin surface and minifin surface with sintered perforated foil) and for two kinds of boiling fluids (ethyl alcohol and Novec TM 649). Novec 649 is considered to be an environmentally friendly alternative for electronic devices cooling applications. The experiments were carried out at atmospheric pressure. Compared with smooth surface, the surface with plain minifins provides approximately 1.5-times higher heat transfer coefficient obtained with Novec TM 649 and ethyl alcohol boiling. At low and medium heat fluxes minifins with porous covering produced the highest heat transfer coefficient.

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“…The preliminary power measurement comes from a wattmeter (2). Thermocouples' signals, taken by dry-well calibrator (7), are sent to data logger (6) and then the PC (5) receives it.…”

Section: Methodsmentioning

confidence: 99%

“…The main module stands on a teflon base (5). The copper bar is insulated with a layer of ceramic insulation (7).…”

Section: Methodsmentioning

confidence: 99%

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Pool boiling heat transfer on surfaces with plain minifins and minifins with perforated foil

Nadstawna

Pastuszko

2014

MATEC Web of Conferences

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“…While affecting LHP fundamentally, the wicks are the most difficult part to manufacture and of the highest cost. The electronic cooling systems correspond to the developing trend of electronic equipments, which means dissipating more power and heat flux with miniaturizing dimension [4][5][6][7] . That trend escalates the manufacturing difficulty of the LHPs and even worse, the wicks.…”

Section: Introductionmentioning

confidence: 99%

Development of sintered Ni-Cu wicks for loop heat pipes

Xin

Cui

Zou

et al. 2009

Sci. China Ser. E-Technol. Sci.

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The present study fabricated a series of capillary wicks for loop heat pipes (LHPs), using two different methods, the cold-pressing sintering and direct loose sintering, and experimentally investigated the effect of different methods, compositions and sintering parameters on their properties in terms of porosity, permeability and pore radius. Porosity and pore radius were measured by the Archimedes method and Scanning Electron Microscope (SEM), respectively. Permeability of the wicks was compared by calculation using empirical equation. Results show that capillary wicks were successfully fabricated by using two different methods; the optimal capillary wick was found to be sintered at 650℃ for 30 min, using direct loose sintering technique, with 90% nickel and 10% copper. The wicks could reach the porosity of 70.07% and the permeability of 10 −13 m 2 order, with mean pore radius of 0.54 μm.loop heat pipe, capillary wick, sintering, porosity, permeability, pore radius

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“…The examples can be listed: air -water, sink -air jet, sink -fan, sink -liquid jet, sink -thermoelectric, sink -spreaders, etc. [5]. Also, cross flow systems of similar fluid gives different flow conditions and heat transfer characteristics.…”

Section: Dr D Y Patil College Of Engineering and Innovation Savitmentioning

confidence: 99%

Cold Zone Exploration Using Position of Maximum Nusselt Number for Inclined Air Jet Cooling

Ingole

Sundaram

2017

Archive of Mechanical Engineering

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Inclined jet air cooling can be effectively used for cooling of electronics or other such applications. The non-confined air jet is impinged and experimentally investigated on the hot target surface to be cooled, which is placed horizontally. Analysis and evaluations are made by introduction of a jet on the leading edge and investigated for downhill side cooling to identify cold spots. The jet Reynolds number in the range of 2000 ≤ Re ≤ 20 000 is examined with a circular jet for inclination (Θ) of 15 < Θ < 75 degree. Also, the consequence of a jet to target distance (H) is explored in the range 0:5 ≤ H/D ≤ 6.8. For 45 degree jet impingement, the maximum Nusselt number is widely spread. Location of maximum Nusselt number is studied, which indicates cold spots identification. At a higher angle ratio, the angle is the dominating parameter compared to the Reynolds Number. Whereas at a lower angle ratio, the inclined jet with a higher Reynolds number is giving the cooling point away from leading edge. It is observed that for a particular angle of incident location of maximum Nusselt Number, measured from leading edge of target, is ahead than that of stagnation point in stated conditions.

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The Challenges of Electronic Cooling: Past, Current and Future

Cited by 58 publications

References 8 publications

Pool boiling heat transfer on surfaces with plain minifins and minifins with perforated foil

Pool boiling heat transfer on surfaces with plain minifins and minifins with perforated foil

Development of sintered Ni-Cu wicks for loop heat pipes

Cold Zone Exploration Using Position of Maximum Nusselt Number for Inclined Air Jet Cooling

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