Thermal management and temperature uniformity enhancement of electronic devices by micro heat sinks: A review

He, Ziqiang; Yan, Yunfei; Zhang, Zhien

doi:10.1016/j.energy.2020.119223

Cited by 442 publications

(80 citation statements)

References 285 publications

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“…The existence of hot spots also has an adverse impact on the reliability of microelectronic devices or even gives rise to thermal breakdown. Statistics indicate that more than half of malfunctions result from problems in thermal management [2]. Microscale heat transfer devices are three-dimensional structures manufactured by means of specific micromachining technologies [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Hydraulic and Thermal Performance of Microchannel Heat Sink Inserted with Pin Fins

et al. 2021

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With the development of micromachining technologies, a wider use of microchannel heat sink (MCHS) is achieved in many fields, especially for cooling electronic chips. A microchannel with a width of 500 μm and a height of 500 μm is investigated through the numerical simulation method. Pin fins are arranged at an inclined angle of 0°, 30°, 45°, and 60°, when arrangement method includes in-lined pattern and staggered pattern. The effects of inclined angle and arrangement method on flow field and temperature field of MCHSs are studied when Reynolds number ranges from 10 to 300. In addition to this, quantitative analyses of hydraulic and thermal performance are also discussed in this work. With the increase of inclined angle, the variation of friction factor and Nusselt number do not follow certain rules. The best thermal performance is achieved in MCHS with in-lined fines at an inclined angle of 30° accompanied with the largest friction factor. Arrangement method of pin fins plays a less significant role compared with inclined angle from a general view, particularly in the Reynolds number range of 100 ~300.

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Section: Introductionmentioning

confidence: 99%

Hydraulic and Thermal Performance of Microchannel Heat Sink Inserted with Pin Fins

et al. 2021

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“…1 Therefore, it is necessary to provide high-efficiency micro-power generation systems (MPGS) for devices to promote further development. 2 MPGS mainly includes micro-engine, micro-fuel cell, micro-thermoelectric system and micro-thermophotovoltaic (MTPV) system. However, micro-engine with moving components are easy to cause fuel gas leakage and system failure.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, with the continuous development of micro/mini devices, micro‐electro‐mechanical systems (MEMS) have been widely employed 1 . Therefore, it is necessary to provide high‐efficiency micro‐power generation systems (MPGS) for devices to promote further development 2 . MPGS mainly includes micro‐engine, micro‐fuel cell, micro‐thermoelectric system and micro‐thermophotovoltaic (MTPV) system.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigations on the emitter power and energy conversion efficiency improvement of micro‐cylindrical combustor by an internal spiral fin for micro‐thermophotovoltaic systems

Zhao

Yan

et al. 2021

Int J Energy Res

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Aiming at improving the energy output and energy conversion efficiency of thermophotovoltaic systems, a micro-combustor with high and uniform outer wall temperature is desirable. Therefore, the micro-cylindrical combustor with a novel micro-spiral fin is proposed to improve the thermal performance. The effect of inlet velocities of premixed hydrogen/air, the critical design parameters of the spiral fin length (L) and the spiral fin pitch (W) on the thermal performance of the micro-cylindrical combustor are numerically investigated.Results show that micro-spiral fin is beneficial to improve the outer wall temperature value and uniformity, which can significantly increase the emitter power and energy conversion efficiency of micro-cylindrical combustor. However, the improvement of thermal performance is at the cost of higher pressure loss. Furthermore, compared with all the investigated geometrical models, the micro-cylindrical combustor with spiral fin length at the size of 14 mm and spiral fin pitch at the size of 2.355 mm obtains the best comprehensive heat transfer performance.

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“…3 In fact, an enormous amount of unorganized VOCs emissions directly jeopardize the normal growth of fauna and flora, 4,5 as well as form the important precursors 6,7 of ozone and secondary aerosols, which could contribute secondary pollution and even lead to more serious destruction to environment and organism. Nowadays, adsorption, 8,9 combustion oxidation, [10][11][12][13][14] and biodegradation 15 all have been widely used in the treatment of VOCs treatment, and catalytic combustion is one of the most vital methods in reducing VOCs. 16 Aiming at the catalytic oxidation for VOCs, de Rivas et al, 17 respectively, performed the experimental studies on VOCs over six various kinds of Ce-Zr catalysts, which indicated the catalysts with mole ratio 0.15:0.85 and 0.5:0.5 have the best stability.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, an enormous amount of unorganized VOCs emissions directly jeopardize the normal growth of fauna and flora, 4,5 as well as form the important precursors 6,7 of ozone and secondary aerosols, which could contribute secondary pollution and even lead to more serious destruction to environment and organism. Nowadays, adsorption, 8,9 combustion oxidation, 10‐14 and biodegradation 15 all have been widely used in the treatment of VOCs treatment, and catalytic combustion is one of the most vital methods in reducing VOCs 16 …”

Section: Introductionmentioning

confidence: 99%

Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers

et al. 2021

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Catalytic combustion is an effective way for volatile organic compounds harmless treatment. In this paper, the synergism between non-noble metal active phase Cu-Mn and Y-zeolite, SiO 2 , γ-Al 2 O 3 , and TiO 2 was studied by catalytic combustion experiments and corresponding characterizations; the conclusions as following: Cu-Mn/SiO 2 has the best activity and stability, T 10 and T 90 are 210 C and 298 C, respectively. Benzene can be completely oxidized below 300 C, which is due to the formation of substantial Cu-Mn solid solutions and a large number of Cu 2+ /Mn 3+ ions on the surface of SiO 2 . The activation energy of C 6 H 6 in CuMn 2 /TiO 2 is 95.50 kJ/mol, while that of the other three catalysts is close, probably 60 kJ/mol. Moreover, the stability of SiO 2 is the highest and can be maintained for more than 60 hours. The fundamental reason of catalyst deactivation is the higher diffusion resistance on the surface of the catalyst with small pore size distribution and the lack of surface oxygen, which leads to the lower degree of complete oxidation of C 6 H 6 .

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Thermal management and temperature uniformity enhancement of electronic devices by micro heat sinks: A review

Cited by 442 publications

References 285 publications

Hydraulic and Thermal Performance of Microchannel Heat Sink Inserted with Pin Fins

Hydraulic and Thermal Performance of Microchannel Heat Sink Inserted with Pin Fins

Numerical investigations on the emitter power and energy conversion efficiency improvement of micro‐cylindrical combustor by an internal spiral fin for micro‐thermophotovoltaic systems

Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers

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