Flow boiling heat transfer enhancement using carbon nanotube coatings

Kumar, C.S. Sujith; Suresh, S.; Yang, Lizhong; Yang, Qiaqin; Aravind, S

doi:10.1016/j.applthermaleng.2013.12.053

Cited by 67 publications

(16 citation statements)

References 24 publications

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“…Utilizing computational fluid dynamics (CFD) programme, analysis of car radiator is done. Utilizing nano material mixed coolant in the vehicle radiator, improved conduction heat transfer of the coolant is observed (Peyghambarzadeh et al., 2011, 2013; Sujith Kumar et al., 2012; Venkatesan & Hemanandh, 2018). Programming investigation utilizing PC is helpful on the grounds, that is, compact and less expense required contrasted with the reasonable work.…”

Section: Materials and Methodologymentioning

confidence: 99%

Study of the performance of a coolant mixed with an Al₂O₃/SiC nanomaterial in an engine radiator

Venkatesan

Kalyan

Gopinath

et al. 2022

Environmental Quality Mgmt

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One of the important components of a car to control the temperature of a car's engine is the radiator. To increase the heat absorption capacity of the coolant/fluid used in the radiator with minimum pumping power, innovative fluids called nanofluids have become the main area of research these days. Therefore, with the development of new technologies in the field of “nano‐materials” and “nano‐fluids,” the physical and chemical properties of coolant/fluid can be improved which in turn improves the radiator and engine efficiency, and reduces radiator weight and size. In this article, the heat transfer by forced convection in nanofluids based on Al2O3 and SiC was studied experimentally and compared to that of base fluid in an automotive radiator. The nanofluid is mixed with ethylene glycol and the fluid is prepared by the sonication method. The nanofluids were prepared by varying the nanomaterials and the amounts of nanomaterials in the base fluid and their heat transfer performance in the radiator was analyzed using ANSYS FLUENT software. Approximately 15% and 12% increase in radiator efficiency by using Al2O3 mixed nanofluid and SiC mixed nanofluid, respectively.

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Section: Materials and Methodologymentioning

confidence: 99%

Study of the performance of a coolant mixed with an Al₂O₃/SiC nanomaterial in an engine radiator

Venkatesan

Kalyan

Gopinath

et al. 2022

Environmental Quality Mgmt

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“…Repeated experiments are carried out until the CHF is reached, which is recognized by an excessive rise in surface temperature. 34,35 The surface roughness of the test portion is altered using various sandpapers or grindstones ranging in grit from 300 to 1000, and it is assessed using an optical profilometer. Using acetone and distilled water, the flow of the fluid loop and test section's surfaces undergo cleaning after every test, and the surface roughness is subsequently modified.…”

Section: Experimental Facility and Proceduresmentioning

confidence: 99%

Experimental study on flow boiling heat transfer augmentation of novel zinc oxide coated copper hybrid nanofluids

Gupta,

Misra

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Understanding the nanofluid flow boiling phenomena is essential for many engineering applications including atomic reactors, cooling of electronic devices, synthetic buildings and spacecraft. Hybrid nanofluids, which are commonly defined as mixtures of two or more nanoparticles, are yet unknown to have improved features. When the coupled nanoparticles are suitably coated with one another, one on top of the other, this would be a successful technique as the usage of such nanofluids is hardly reported. The current research aims to investigate the effects of various novel hybrid ZnO coated Cu ( Cu@ZnO) nanofluid concentrations on the critical heat flux ( CHF) and heat transfer coefficient ( HTC) for their potential real-life application. The Cu@ZnO nanoparticles with hybrid properties were selected because Cu increased the conductivity of heat whereas ZnO improved chemical durability. Efficient spark discharge in liquid nitrogen was employed in three stages to produce robust Cu@ZnO nanoparticles with hybrid properties. In order to create durable nanofluids, the nanoparticles with mixed properties were dispersed using an ultrasonication process at four different volumetric concentrations: 0.025%, 0.050%, 0.075% and 0.1%. At 45°C, the nanofluids’ thermal conduction was 31% higher than that of base fluid. The flow boiling (subcooled) tests are carried out in minichannel with novel nanofluids. When the flow boiling investigation was being conducted, a greater concentration improved the HTC and CHF. In comparison to water, 0.1% of nanofluid caused the maximum rises in CHF and HTC, which were found to be 168.09% and 186.9%, respectively. It is possible for the fluid to utilize latent heat, create bubbles, distinct and delay the commencement of CHF because the thick Cu@ZnO-coated surface possesses strong thermal conductivity.

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“…Moreover, the heat transfer coefficient of diamond microarrays is 76% greater than that of triangles. The flow boiling heat transfer characteristics of copper substrates with carbon nanotube (CNT) and diamond coating were studied by Kumar et al [ 119 ]. The results demonstrated that the nucleation density on the CNT and diamond coated hydrophobic surfaces was higher than that of sandblasted copper surface, and the critical heat flux on the CNT-coated hydrophobic surface were improved by 21.6%, 14.28%, and 6.69%, respectively, to the blasted copper surface for the mass flux of 283, 348, and 427 kg/(m 2 ·s), respectively.…”

Section: Boiling Heat Transfer On the Superhydrophobic Surfacementioning

confidence: 99%

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

Zhang

Yang

et al. 2021

Nanomaterials

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Inspired by the superhydrophobic properties of some plants and animals with special structures, such as self-cleaning, water repellent, and drag reduction, the research on the basic theory and practical applications of superhydrophobic surfaces is increasing. In this paper, the characteristics of superhydrophobic surfaces and the preparation methods of superhydrophobic surfaces are briefly reviewed. The mechanisms of drag reduction on superhydrophobic surfaces and the effects of parameters such as flow rate, fluid viscosity, wettability, and surface morphology on drag reduction are discussed, as well as the applications of superhydrophobic surfaces in boiling heat transfer and condensation heat transfer. Finally, the limitations of adapting superhydrophobic surfaces to industrial applications are discussed. The possibility of applying superhydrophobic surfaces to highly viscous fluids for heat transfer to reduce flow resistance and improve heat transfer efficiency is introduced as a topic for further research in the future.

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Flow boiling heat transfer enhancement using carbon nanotube coatings

Cited by 67 publications

References 24 publications

Study of the performance of a coolant mixed with an Al₂O₃/SiC nanomaterial in an engine radiator

Study of the performance of a coolant mixed with an Al₂O₃/SiC nanomaterial in an engine radiator

Experimental study on flow boiling heat transfer augmentation of novel zinc oxide coated copper hybrid nanofluids

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

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Flow boiling heat transfer enhancement using carbon nanotube coatings

Cited by 67 publications

References 24 publications

Study of the performance of a coolant mixed with an Al2O3/SiC nanomaterial in an engine radiator

Study of the performance of a coolant mixed with an Al2O3/SiC nanomaterial in an engine radiator

Experimental study on flow boiling heat transfer augmentation of novel zinc oxide coated copper hybrid nanofluids

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

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Study of the performance of a coolant mixed with an Al₂O₃/SiC nanomaterial in an engine radiator

Study of the performance of a coolant mixed with an Al₂O₃/SiC nanomaterial in an engine radiator