Numerical study on cooling enhancement of micro devices by designing turbulence based hollow micro pin-fin arrays with lateral holes

doi:10.19799/j.cnki.2095-4239.2021.0656

Abstract

Abstract:

This paper investigates the heat transfer performance with air convection for different heat sink structures, in order to gain insight into the influence of microstructures on the heat transfer performance of heat sinks and to achieve efficient cooling under different operating conditions. By changing the simulation conditions, such as flow direction, flow velocity, and heat flux, the numerical simulation method of computational fluid dynamics is used to study the heat transfer efficiency and airflow of heat sinks with different microstructures. It has been discovered that heat sinks with hollow micro pin-fin arrays have a better cooling effect than heat sinks with micro plate-fin arrays or hybrid arrays. The benefit of hollow micro pin-fin arrays is that they promote local turbulence of air around them, which increases the average flow rate of cold air in the near-wall boundary layer. In the case of the vertical inflow, the design allows for the best use of air kinetic energy to flush the surface inside and outside the micro-pillar, improving convective heat transfer efficiency. According to the analysis, as the height of the microstructure increases, the percentage of heat transfer enhancement decreases. Meanwhile, as the microstructure density varies, there is a peak in the average heat transfer coefficient of the heat sink. This indicates the existence of an optimal value for the microstructure parameters when material utilization is taken into account. When compared to heat sinks with conventional micro plate-fin arrays, the newly optimized hollow micro pin-fin arrays at a height of 5 mm and pitch of 6 mm can reduce the average temperature of heat sink by 10%-15%, ensuring the efficient performance of microdevices in a variety of working conditions.

Key words: heat sink, hollow micro pin-fin, forced convection, numerical simulation, heat transfer performance

CLC Number:

TK 02

WU Xiaoling, ZHOU Tao, LIU Yuzhao, DU Yanping, CHEN Huiping, LI Shun. Numerical study on cooling enhancement of micro devices by designing turbulence based hollow micro pin-fin arrays with lateral holes[J]. Energy Storage Science and Technology, 2022, 11(6): 1980-1987.

Figures/Tables 13

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References 19

1	RADZIEMSKA E. The effect of temperature on the power drop in crystalline silicon solar cells[J]. Renewable Energy, 2003, 28(1): 1-12.
2	DUBEY S, SARVAIYA J N, SESHADRI B. Temperature dependent photovoltaic (PV) efficiency and its effect on PV production in the world-A review[J]. Energy Procedia, 2013, 33: 311-321.
3	RODRIGUES E M G, MELÍCIO R, MENDES V M F, et al. Simulation of a solar cell considering single-diode equivalent circuit mode[J]. Renewable Energy and Power Quality Journal, 2011: 369-373.
4	MAGEED H M A, ZOBAA A F, RAOUF M H A, et al. Temperature effects on the electrical performance of large area multicrystalline silicon solar cells using the current shunt measuring technique[J]. Engineering, 2010, 2(11): 888-894.
5	TOBNAGHI D M, MADATOV R, NADERI D. The effect of temperature on electrical parameters of solar cells[J]. IJAREEIE, 2013, 2(1): 6404-6407.
6	SKOPLAKI E, PALYVOS J A. On the temperature dependence of photovoltaic module electrical performance: A review of efficiency/power correlations[J]. Solar Energy, 2009, 83(5): 614-624.
7	KOUNDINYA S, VIGNESHKUMAR N, KRISHNAN A S. Experimental study and comparison with the computational study on cooling of PV solar panel using finned heat pipe technology[J]. Materials Today: Proceedings, 2017, 4(2): 2693-2700.
8	RABIE R, HASSAN H, AHMED M, et al. Enhancement of concentrator photovoltaic cooling using phase change material by adding bulk over regular configuration[C]//2018 5th International Conference on Renewable Energy: Generation and Applications (ICREGA). February 25-28, 2018, Al Ain, United Arab Emirates. IEEE, 2018: 168-173.
9	ZHAO B, HU M K, AO X Z, et al. Performance analysis of enhanced radiative cooling of solar cells based on a commercial silicon photovoltaic module[J]. Solar Energy, 2018, 176: 248-255.
10	ZHANG H, LIU H W, CHEN H P, et al. Research on the performance of flatbox photovoltaic/thermal collector with cooling channels [J].Sol Energy Eng, 2017, 140: 10-10.
11	MICHELI L, REDDY K S, MALLICK T K. Thermal effectiveness and mass usage of horizontal micro-fins under natural convection[J]. Applied Thermal Engineering, 2016, 97: 39-47.
12	IBRAHIM T K, MOHAMMED M N, KAMIL MOHAMMED M, et al. Experimental study on the effect of perforations shapes on vertical heated fins performance under forced convection heat transfer[J]. International Journal of Heat and Mass Transfer, 2018, 118: 832-846.
13	CHIEN L H, CHENG Y T, LAI Y L, et al. Experimental and numerical study on convective boiling in a staggered array of micro pin-fin microgap[J]. International Journal of Heat and Mass Transfer, 2020, 149: doi:10.1016/j.ijheatmasstransfer.2019.119203.
14	SHAMVEDI D, MCCARTHY O J, O'DONOGHUE E, et al. 3D Metal printed heat sinks with longitudinally varying lattice structure sizes using direct metal laser sintering[J]. Virtual and Physical Prototyping, 2018, 13(4): 301-310.
15	SUNDAR S, SONG G, ZAHIR M Z, et al. Performance investigation of radial heat sink with circular base and perforated staggered fins[J]. International Journal of Heat and Mass Transfer, 2019, 143: doi:10.1016/j.ijheatmasstransfer.2019.118526.
16	YEOM T, SIMON T W, NORTH M, et al. High-frequency translational agitation with micro pin-fin surfaces for enhancing heat transfer of forced convection[J]. International Journal of Heat and Mass Transfer, 2016, 94: 354-365.
17	BALDRY M, TIMCHENKO V, MENICTAS C. Optimal design of a natural convection heat sink for small thermoelectric cooling modules[J]. Applied Thermal Engineering, 2019, 160: doi:10.1016/j.applthermaleng.2019.114062.
18	ELSHAFEI E A M. Natural convection heat transfer from a heat sink with hollow/perforated circular pin fins[J]. Energy, 2010, 35(7): 2870-2877.
19	SEE Y S, LEONG K C. Heat transfer study of 3D printed air-cooled heat sinks[C]//13th Int Conf. Heat Transf. Fluid Mech, Thermodyn, 2017: 852-859.

特征	高 /mm	直径 /mm	厚度 /mm	微柱排布间距/mm	面积 /(mm×mm)
微柱1	3	3	0.5	10.5	30×30
微柱2	3	3	0.5	6	30×30
微柱3	3	3	0.5	3.75	30×30
微翅片	3	—	1	6	30×30
混合散热器	3	—	—	6	150×150
微翅片散热器	3	—	1	6	150×150
微柱散热器	3	3	0.5	6	150×150

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