An updated review on application of nanofluids in flat tubes radiators for improving cooling performance

Arora, Neeti; Gupta, Munish Kumar

doi:10.1016/j.rser.2020.110242

Cited by 63 publications

(17 citation statements)

References 140 publications

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“…Choi 20 first made these modern fluids and called them NFs. After the introduction of NFs and their amazing thermal properties, much research was done on their performance in diverse applications such as thermal management of electronic components 21 , 22 and photovoltaic panels 23 , 24 , nuclear applications 25 , 26 , and performance improvement of solar thermal collectors 27 – 29 , heat exchangers 30 – 32 and car radiators 33 – 35 . The literature inspection shows that the performance of thermal systems with NF coolants equipped with turbulators was investigated by various researchers.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

Baghaei

Suksatan

et al. 2022

Sci Rep

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This study is devoted to the numerical assessment of the influence of helical baffle on the hydrothermal aspects and irreversibility behavior of the turbulent forced convection flow of water-CuO nanofluid (NF) inside a hairpin heat exchanger with 100 mm length, 10 mm inner tube internal diameter, and 15 mm outer diameter internal diameter. The variations of the first-law and second-law performance metrics are investigated in terms of Reynolds number (Re = 5000–10,000), volume concentration of NF ($$\varphi =0-4\mathrm{\%}$$ φ = 0 - 4 % ) and baffle pitch (B = 25–100 mm). The results show that the NF Nusselt number grows with the rise of both the Re and $$\varphi$$ φ whereas it declines with the rise of B. In addition, the outcomes depicted that the rise of both Re and $$\varphi$$ φ results in the rise of pressure drop, while it declines with the increase of B. Moreover, it was found that the best thermal performance of NF is equal to 1.067, which belongs to the case B = 33.3 mm, $$\varphi$$ φ =2%, and Re = 10,000. Furthermore, it was shown that irreversibilities due to fluid friction and heat transfer augment with the rise of Re while the rise of B results in the decrease of frictional irreversibilities. Finally, the outcomes revealed that with the rise of B, the heat transfer irreversibilities first intensify and then diminish.

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

Baghaei

Suksatan

et al. 2022

Sci Rep

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show abstract

“…Figures [13][14][15][16][17][18] show the effects of the Reynolds number, nanoparticle volume fraction and mono and hybrid nanofluid inlet temperature on heat transfer enhancement. Through the increase in mono and hybrid nanoparticle concentrations, Reynolds number and mono and hybrid nanofluid inlet temperature, the increase in heat transfer has increased.…”

Section: Resultsmentioning

confidence: 99%

Energetic and Exergetic Assessment of the Cooling Efficiency of Automobile Radiator Using Mono and Hybrid Nanofluids

Sultan¹,

Anead²,

Jaddoa³

2021

IJHT

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In this paper, for two separate half-breed Nano liquids, Ag (25nm) + refined water and Ag (50nm) + Zn (50nm)-refined water tentatively considered at the vehicle radiator, the execution of restricted convection. Four distinct cross-breed Nano liquid concentrations in the range of 2-6 vol %. The increase of half breed nanoparticles into the refined water as a base liquid was organized by percentage. Within the range of 20 l/min-60 l /min, the coolant flow rate is altered. Inside the warm trade, Crossover Nano coolants show colossal change compared to the refined water. Ag-refined water cross breed Nano liquid's warm exchange execution was found to be much better than Ag + Zn-refined water half breed Nano coolant. In addition, with the rise in the concentration of half breed nanoparticle and half breed Nano fluid velocity, the Nusselt number is found to expand. In the advancement of the warm exchange rate, Mono and hybrid nanofluid forms play a very important role in enhancing the heat transfer and refrigeration of car radiators. With an increase in concentration of half-breed nanoparticles for the primary form about 44 percent warm exchange transition, expansion of 6 vol percent crossover nanoparticles were achieved with the rate of warm exchange. In comparison to the current form of cross breed nanoparticles, with an expansion of 6 percent vol concentration, 22 percent extended. The exergy in flow, exergy destruction and exergy efficiency of mono nanofluid (Ag +Dw) are greater than hybrid nanofluid (Ag + Zn + Dw) and distilled water. The exergy inflow, exergy destruction, and exergy efficiency as the concentration of nanoparticles increases for the two forms of mono and hybrid nanofluid. The values parameters of the mono nanofluid (Ag + Dw) such as exergy in flow, exergy destruction and exergy efficiency at 6 vol% were 572 W, 460 W, 72% respectively while in hybrid nanofluids (Ag + Zn + Dw) were 420W, 282W, 51%. The use of mono and hybrid nanofluid as a working fluid results in higher efficiency of heat transfer, which promotes the performance of the car engine and decreases fuel consumption.

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“…Nanoparticles used in these nanofluids include metallic materials such as iron, nickel, cobalt, and their oxides such as magnetite (Fe 3 O 4 ). When the magnetic field is applied, the distribution structure characteristics of the particles change, which makes the thermal properties of magnetic nanofluids change [5]. Compared with ordinary liquid working medium, it is not only a matter has excellent thermal properties, such as magnetic coefficient of thermal conductivity of nanofluids increases significantly, the heat transfer effect enhances obviously.…”

Section: Introductionmentioning

confidence: 99%

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

et al. 2022

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This paper focuses on the convective heat transfer characteristics of Fe3O4 /Water magnetic nanofluids under laminar and turbulent conditions. After verifying the accuracy of the experimental apparatus, the effects of magnetic field strength, concentration, Reynolds number and temperature on the convective heat transfer coefficient have been studied. The convective heat transfer characteristics of nanofluids under laminar and turbulent flow conditions were studied in depth, and the influence of each factor on the heat transfer coefficient was analyzed by orthogonal experimental design method. Under the laminar flow conditions, the convective heat transfer of magnetic nanofluids performed best when the Reynolds number was 2000, the magnetic field strength was 600, the temperature was 30? and the concentration was 2%. And the convective heat transfer coefficient (h) increased by 3.96% than the distilled water in the same conditions. In turbulent state, the convective heat transfer of magnetic nanofluids performed the best when the Re was 6000, the magnetic field strength was 600, the temperature was 40? and the concentration was 2%. The h increased by 11.31% than the distilled water in the same Reynolds number and the magnetic field strength conditions.

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An updated review on application of nanofluids in flat tubes radiators for improving cooling performance

Cited by 63 publications

References 140 publications

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

Energetic and Exergetic Assessment of the Cooling Efficiency of Automobile Radiator Using Mono and Hybrid Nanofluids

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

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