Thermal management of high concentrator solar cell using new designs of stepwise varying width microchannel cooling scheme

Abo-Zahhad, Essam M.; Ookawara, Shinichi; Esmail, Mohamed F.C.; El-Shazly, A.H.; Elkady, M.F.; Radwan, Ali

doi:10.1016/j.applthermaleng.2020.115124

Cited by 51 publications

(17 citation statements)

References 53 publications

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“…Solar concentrator technology has continued to develop rapidly in recent years. Some of its uses have also almost entered the production phase by the industry for various purposes such as power generation [1][2][3], cooling [4][5][6] and/or drying [7][8][9]. Its use is also not limited to land [1,4,7], but studies have also been carried out underwater [10].…”

Section: Introductionmentioning

confidence: 99%

Performance of Solar Concentrator with and without Mirror Coating Paper

Sitorus¹,

Muslih

Haris

et al. 2022

Trends Sci

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The utilization of solar energy continues to be developed to get the best efficiency. This energy can be used for electricity generation, cooling, and/or drying. One technology that is still under development is the use of solar concentrators. Therefore, our paper aims to measure the performance of the development of a solar collection unit coated with mirror paper. Furthermore, the data is compared with the test data for solar concentrators without mirror paper that was carried out by previous researchers in 2019. The method used in this research is a field experiment. A simple statistical comparison method was carried out on the experimental data. Field testing was conducted after the solar concentrator was coated with mirror paper. The test was carried out for 5 days in full shining sun conditions in Sukabumi Regency, Indonesia. The surface coating of the solar concentrator with mirror paper has not been able to improve the performance of the solar concentrator satisfactorily. Solar concentrators can heat the fluid from its initial average temperature of 19.37 %. HIGHLIGHTS Several field tests were undertaken to determine the effectiveness of solar concentrators with and without mirror coated paper The fluid temperature heated with coated paper in a solar concentrator provides a higher temperature than without paper coating Solar concentrator with mirror coated paper has potential as an alternative for covering the surface of the solar concentrator GRAPHICAL ABSTRACT

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Section: Introductionmentioning

confidence: 99%

Performance of Solar Concentrator with and without Mirror Coating Paper

Sitorus¹,

Muslih

Haris

et al. 2022

Trends Sci

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show abstract

“…21 Similarly, other works have also been done to remove the uneven heat flux generation by varying the fin density in the microchannel heat sinks. [24][25][26][27] Abbaspour et al 28 have successfully fabricated a microfluidic heat sink specifically designed to address the heat removal of both the background and hotspots. They applied an extreme micro gap for hotspots cooling and micro pin fins for the background cooling.…”

Section: Introductionmentioning

confidence: 99%

“…The coolant is injected into the combined heat sink from two distinct ports to dissipate the non-uniform heat flux. Obviously, the works [24][25][26][27] show considerable cooling performance for the nonuniform heat flux but only for the fixed on-chip hotspots. However, in practical cases, the location of the hotspots often varies with the chip usage.…”

Section: Introductionmentioning

confidence: 99%

Automatically adaptive cooling of hotspots by a fractal microchannel heat sink embedded with thermo‐responsive hydrogels

Yan

et al. 2021

Intl J of Energy Research

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A smart fractal microchannel heat sink (SFMHS) integrated with thermoresponsive hydrogels is developed for the randomly distributed hotspots sensing and adaptive cooling of microelectronic devices. The equally distributed thermo-responsive hydrogels can firstly sense the temperature rise caused by random hotspots and then work as microfluidic valves to reallocate the coolant by its adaptive thermo-shrinkage. The CFD numerical results show that the proposed SFMHS presents lower and more uniform temperature distribution than FMHS under hotspots conditions. The maximum temperature rise, heat source temperature difference, and heat source temperature SD of SFMHS are 4.47, 4.28, and 0.97 K lower than FMHS at the HSB heat flux of 400 W/cm 2 , respectively. The adaptive cooling superiority of SFMHS gets enhanced with the increase of the hotspots area and heat flux density because more hydrogels shrink, and more flow gets reallocated for hotspot-targeted cooling. However, too low (HSA,400 W/cm 2 ) or too high (HSC, 300 W/cm 2 ) hotspots conditions would result in the worse hotspot cooling of SFMHS with no adaptive flow reallocation because all hydrogels are at the same initial or shrunken sates. Meanwhile, SFMHS is more effective to sense and cooling the hotspots that are closer to hydrogels.

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“…However, it generally exposed to high solar concentration ratios and reach high temperatures (up to 1300 C under no cooling condition under 1000 suns) which may decrease the conversion efficiency and decrease safe stability, even cause physical damage. 13,14 Therefore, the high concentrator photovoltaic system is subjected to similar challenges of electronic components and devices. Therefore, thermal management of the high concentrator photovoltaic system is also important.…”

Section: Introductionmentioning

confidence: 99%

Bionic design for the heat sink inspired by phyllotactic pattern

Lyu

Yuheng

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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A good heat dissipating condition will help give full play to the performance and reliability of electronic components and devices. To strengthen the heat dissipating performance, a novel bionic heat sink of pin fins has been designed. The configuration of cooling pin fins in this heat sink is based on phyllotaxis theory in biology. The bionic configuration of the cooling pin fins has better homogeneity and complementarity, which can form a reasonable air flow channel to improve its cooling efficiency. For testing and analyzing the performance of the bionic heat sink and the effects of the phyllotactic parameters on the heat dissipating, some contrast experiments have been conducted using thermal infrared imager. The results show that the bionic heat sink has better heat dissipating performance, which can make the surface temperature of the heat block lower by 14.7%. This paper will supply a new and effective solution to heat dissipation problem and has a certain contribution for the development of electrical and electronic industry.

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Thermal management of high concentrator solar cell using new designs of stepwise varying width microchannel cooling scheme

Cited by 51 publications

References 53 publications

Performance of Solar Concentrator with and without Mirror Coating Paper

Performance of Solar Concentrator with and without Mirror Coating Paper

Automatically adaptive cooling of hotspots by a fractal microchannel heat sink embedded with thermo‐responsive hydrogels

Bionic design for the heat sink inspired by phyllotactic pattern

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