Experimental study on the influence of bionic channel structure and nanofluids on power generation characteristics of waste heat utilisation equipment

Tu, Jianglin; Qi, Cong; Tang, Zhibo; Tian, Zhen; Chen, Lanqi

doi:10.1016/j.applthermaleng.2021.117893

Cited by 60 publications

(2 citation statements)

References 42 publications

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“…Authors have revealed that low Rayleigh numbers and intensive external cooling reflect a possibility to use the local thermal equilibrium approach. Some interesting results can also be found in [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 73%

Thermogravitational Convective Flow and Energy Transport in an Electronic Cabinet with a Heat-Generating Element and Solid/Porous Finned Heat Sink

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Sheremet

2021

Mathematics

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Heat transfer enhancement poses a significant challenge for engineers in various practical fields, including energy-efficient buildings, energy systems, and aviation technologies. The present research deals with the energy transport strengthening using the viscous fluid and solid/porous fins. Numerical simulation of natural convective energy transport of viscous fluid in a cooling cavity with a heat-generating element placed in a finned heat sink was performed. The heat-generating element is characterized by constant volumetric heat generation. The Darcy–Brinkman approach was employed for mathematical description of transport processes within the porous fins. The governing equations formulated using the non-primitive variables were solved by the finite difference method of the second-order accuracy. The influence of the fins material, number, and height on the flow structure and heat transfer was also studied. It was found that the mentioned parameters can be considered as control characteristics for heat transfer and fluid flow for the cooling system.

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Section: Introductionmentioning

confidence: 73%

Thermogravitational Convective Flow and Energy Transport in an Electronic Cabinet with a Heat-Generating Element and Solid/Porous Finned Heat Sink

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Sheremet

2021

Mathematics

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“…15,16 In addition, compared with traditional fluids, nanofluids are also widely used in microchannels, [17][18][19] solar collectors, and other heat exchangers due to their physical parameters such as thermal conductivity, 20,21 thermal diffusivity, and convective heat transfer coefficient. Tu et al 22 designed a new type of heat exchanger based on snake, and CuO-H 2 O nanofluids were used as working medium to study the effect of angular frequency, amplitude, and phase shift of different bionic channel structures on power generation characteristics. It was found that when the mass fraction of CuO-H 2 O nanofluid is .5%, the temperature of the hot end of the thermoelectric generator can be improved by 7.19%.…”

Section: Introductionmentioning

confidence: 99%

Effect of symmetrical and asymmetrical structures of transverse tube on heat transfer performance of nanofluids in a solar collector system

Tang,

Jiang,

et al. 2023

Asia-Pacific J Chem Eng

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In an effort to enhance the heat transfer performance of solar collectors, this paper proposed to replace the smooth tube with symmetrical and asymmetrical transversely corrugated tubes, and to couple with SiO2‐H2O nanofluids for heat transfer of solar collectors. Effects of nanofluids mass fraction (w = .0%, .1%, .3%, and .5%), Reynolds number (3000, 4000, 5000, 6000, and 7000), and groove radius (1.5, 2, and 2.5 mm) on the flow and heat transfer properties of nanofluids in solar collectors were studied. The comprehensive evaluation index was used to consider the heat transfer property and flow resistance of fluid flow at the same time. Results showed that with the augment of nanofluids mass fraction, Reynolds number, and groove radius, the heat transfer enhancement performance of the collector becomes better. Among them, when the Reynolds number is 4000, the asymmetric transversely corrugated tube with a nanofluids mass fraction of .5% and a groove depth of 2.5 mm has the best comprehensive flow and heat transfer performance, and the comprehensive evaluation index can reach 1.62. The study results in this paper are beneficial to the coupling of nanofluids and transversely corrugated tubes and their application in the domain of enhanced heat transfer of solar collectors.

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Effect of magnetic field excitation and sinusoidal curved cavity coupling on heat transfer enhancement and entropy generation of nanofluids

Tian,

Yue,

et al. 2024

J Therm Anal Calorim

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Experimental study on the influence of bionic channel structure and nanofluids on power generation characteristics of waste heat utilisation equipment

Cited by 60 publications

References 42 publications

Thermogravitational Convective Flow and Energy Transport in an Electronic Cabinet with a Heat-Generating Element and Solid/Porous Finned Heat Sink

Thermogravitational Convective Flow and Energy Transport in an Electronic Cabinet with a Heat-Generating Element and Solid/Porous Finned Heat Sink

Effect of symmetrical and asymmetrical structures of transverse tube on heat transfer performance of nanofluids in a solar collector system

Effect of magnetic field excitation and sinusoidal curved cavity coupling on heat transfer enhancement and entropy generation of nanofluids

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