An experimental investigation to study the performance characteristics of heat pipe using aqueous hybrid nanofluids

IF 1.1 Q3 Engineering

Journal of Thermal Engineering Pub Date : 2023-10-17 DOI:10.18186/thermal.1372260

Harshit PANDEY, Naveen Kumar GUPTA, Sanjay AGARWAL

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引用次数: 0

Abstract

The steady-state performance characteristics of a mesh-wick heat pipe were investigated ex- perimentally across a heat load range of 25W-100W incorporating DI water, Al2O3 nanofluids, and Al2O3+GO hybrid nanofluids respectively. All the nano-suspensions were prepared fol-lowing the two-step preparation method. Out of all the prepared Al2O3 nanofluids, 1.0 vol.% Al2O3 nanofluid exhibited the highest reduction in adiabatic vapor temperature. The hybrid combination of 75% Al2O3 +25% GO nanofluid in the heat pipe resulted in a maximum dec-rement of about 21.4%, and 59.5% in the average evaporator temperature, and thermal resis-tance respectively while offering maximum thermal efficiency enhancement of about 31.4% relative to the base fluid. The 75% Al2O3+25% GO hybrid nanofluid in the heat pipe offered the least thermal resistance at a gravity-assisted inclination of 60º. The current study contem- plates the most favourable hybrid combination of Al2O3 and GO nanoparticles for its incor-poration in the heat pipe and tries to identify the underlying reasons behind the performance characteristics achieved using hybrid nanofluids and finally projects the future research scope.

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采用水相混合纳米流体研究热管的性能特性

在25W-100W热负荷范围内，分别研究了含DI水、Al2O3纳米流体和Al2O3+GO混合纳米流体的网芯热管的稳态性能特性。所有纳米悬浮液均采用两步法制备。在所有制备的Al2O3纳米流体中，1.0 vol.%的Al2O3纳米流体表现出最大的绝热蒸汽温度降低。75% Al2O3 +25% GO纳米流体在热管中的混合组合导致蒸发器平均温度和热阻分别最大降低约21.4%和59.5%，而热效率相对于基液提高约31.4%。热管中75% Al2O3+25% GO的混合纳米流体在重力辅助倾角为60º时的热阻最小。目前的研究设想了最有利的Al2O3和氧化石墨烯纳米颗粒的混合组合，将其纳入热管，并试图找出使用混合纳米流体实现性能特征背后的潜在原因，最后预测未来的研究范围。

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来源期刊

Journal of Thermal Engineering THERMODYNAMICS-

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

4 weeks

期刊介绍： Journal of Thermal Enginering is aimed at giving a recognized platform to students, researchers, research scholars, teachers, authors and other professionals in the field of research in Thermal Engineering subjects, to publish their original and current research work to a wide, international audience. In order to achieve this goal, we will have applied for SCI-Expanded Index in 2021 after having an Impact Factor in 2020. The aim of the journal, published on behalf of Yildiz Technical University in Istanbul-Turkey, is to not only include actual, original and applied studies prepared on the sciences of heat transfer and thermodynamics, and contribute to the literature of engineering sciences on the national and international areas but also help the development of Mechanical Engineering. Engineers and academicians from disciplines of Power Plant Engineering, Energy Engineering, Building Services Engineering, HVAC Engineering, Solar Engineering, Wind Engineering, Nanoengineering, surface engineering, thin film technologies, and Computer Aided Engineering will be expected to benefit from this journal’s outputs.