Heat transfer coefficient and critical heat flux during nucleate pool boiling of water in the presence of nanoparticles of alumina, maghemite and CNTs

Neto, A. R. de Sena; Oliveira, J.L.G.; Passos, Júlio César

doi:10.1016/j.applthermaleng.2016.06.130

Cited by 44 publications

(8 citation statements)

References 41 publications

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“…Table 2. Predictions of CHF obtained using Zuber [109] and Kandlikar [110] correlations [76]. As can be seen from Table 2, the CHF of the coating formed on the heated surface after boiling on the deionized water is higher than the CHF of the nanofluid on the smooth surface, and because the separation of the nanoparticle layer is enhanced, the critical heat flux is increased [79].…”

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

“…However, the thermal conductivity, specific surface area of the different nanoparticles [106,107], the difference in density between the nanoparticles and the base [85], and the affinity for the base liquid are different [107,108]. At present, the study of boiling heat transfer of nanoparticles includes metal oxides Al 2 O 3 [70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86], Fe 2 O 3 [76,81], Fe 3 O 4 [67,92], CuO [71,[87][88][89][90][91], ZnO [80,87,100,101], TiO 2 [79,89,[103][104][105], nonmetal oxide SiO 2 [79,81,98,99], carbon nanotubes [71,76,…”

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

“…Neto [76] et al studied the boiling heat transfer performance of water-based Fe2O3, Al2O3, and CNTs nanofluids on the copper surface at a volume concentration of 0.02% and 0.1%, and the deposition surface of Fe2O3, Al2O3, and CNTs after experiment on the deionized water. The CHF and Zuber correlation curves [109] and Kindlikar correlation curves [110] of different nanoparticle types were compared.…”

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

“…As can be seen from Table 2, the CHF of the coating formed on the heated surface after boiling on the deionized water is higher than the CHF of the nanofluid on the smooth surface, and because the separation of the nanoparticle layer is enhanced, the critical heat flux is increased [79]. Neto [76] et al studied the boiling heat transfer performance of water-based Fe 2 O 3 , Al 2 O 3 , and CNTs nanofluids on the copper surface at a volume concentration of 0.02% and 0.1%, and the deposition surface of Fe 2 O 3 , Al 2 O 3 , and CNTs after experiment on the deionized water. The CHF and Zuber correlation curves [109] and Kindlikar correlation curves [110] of different nanoparticle types were compared.…”

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

“…The decrease of the boiling heat transfer coefficient is due to the porous deposition layer formed by the deposition of the nanoparticles, which increases the thermal resistance of the heat conduction, as shown in Figure 9. Bang [70], Ham [74], Neto [76], and Shahmoradi [78] et al experimentally studied the boiling heat transfer performance of water-based Al2O3 nanofluids with different concentrations. The literature [76] also studied the boiling heat transfer of water-based CNTs and water-based Fe2O3 nanofluids.…”

Section: Effect Of Nanoparticle Concentration On Boiling Heat Transfermentioning

confidence: 99%

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Effect of Nanofluids on Boiling Heat Transfer Performance

Yao

Teng

2019

Applied Sciences

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At present, there are many applications of nanofluids whose research results are fruitful. Nanofluids can enhance the critical heat flux, but the effect on boiling heat transfer performance still has disagreement. Base liquids with higher viscosity improve the boiling heat transfer performance of nanofluids. When the base liquid is a multicomponent solution, the relative movement between the different solutions enhances the microscopic movement of the nanoparticles due to the different evaporation order during the boiling process, so that the boiling heat transfer performance is enhanced. Compared with the thermal conductivity of the heated surface, the deposition of the low thermal conductivity nanoparticles reduces the heat dissipation rate of the heated surface and improves the wall superheat. Then the enhancement of the boiling heat transfer coefficient should be attributed to the thermal conductivity improvement of base fluid and the bubble disturbance resulted from the nanoparticle’s microscopic motion.

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Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

Section: Effect Of Nanoparticle Concentration On Boiling Heat Transfermentioning

confidence: 99%

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Effect of Nanofluids on Boiling Heat Transfer Performance

Yao

Teng

2019

Applied Sciences

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Boiling Heat Transfer Enhancement by Self‐Assembled Graphene/Silver Hybrid Film for the Thermal Management of Concentrated Photovoltaics

2020

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Graphene nanosheets have attracted appreciable interest in heat transfer augmentation due to the unique deposition characteristics. The porous morphology of the graphene deposited on the heating surface via self‐assembly is reported to retard the transition boiling significantly. However, less attention has been paid to ameliorate the heat transfer coefficient (HTC) of graphene‐dispersed solutions. Herein, silver ions are introduced into graphene nanofluids to ameliorate its HTC. During boiling, graphene nanosheets and silver nanoparticles simultaneously deposit on the heating surface to form a well‐structured porous graphene/silver hybrid coating. The newly formed surface is characterized for surface morphology, wettability, and roughness. The new surface coating enhances the HTC by up to 109% and maintains the retarded critical heat flux of graphene‐only nanofluids. The application of the enhanced boiling heat transfer for the thermal management of concentrated photovoltaics is studied. It is demonstrated that enhanced boiling allows for cogeneration of electricity and heat from concentrated photovoltaics at approximately fourfold increased production rate while maintaining efficient, safe, and reliable operation.

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Experimental investigation of multiwall carbon nanotubes/water nanofluid pool boiling on smooth and groove surfaces

Moghadam

Goshayeshi

Chaer

et al. 2022

Intl J of Energy Research

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Boiling is an essential process for many industrial applications, such as refrigeration, distillation, and chemical processes. The effectiveness of the heat transfer processes determines the efficiencies of these applications. This study presents the experimental data analysis for pool boiling performance of 0.10, 0.15, and 0.20 wt.% of multiwall carbon nanotubes/water nanofluid on smooth and straight, square, and circular grooved surfaces. According to the experimental results, the configuration S4 with a 30 mm deep circular groove inclined at a 45 angle and 33% higher than the base fluid on the smooth surface had the greatest enhancement in boiling heat transfer coefficient. The result indicated that the inclination of the circular groove had the potential to enhance significantly the pool boiling heat transfer process. Furthermore, this study demonstrated that analyzing the effectiveness of nanofluids in a variety of concentrations and geometrical configurations of heat transfer surfaces is still essential and desirable.

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Heat transfer coefficient and critical heat flux during nucleate pool boiling of water in the presence of nanoparticles of alumina, maghemite and CNTs

Cited by 44 publications

References 41 publications

Effect of Nanofluids on Boiling Heat Transfer Performance

Effect of Nanofluids on Boiling Heat Transfer Performance

Boiling Heat Transfer Enhancement by Self‐Assembled Graphene/Silver Hybrid Film for the Thermal Management of Concentrated Photovoltaics

Experimental investigation of multiwall carbon nanotubes/water nanofluid pool boiling on smooth and groove surfaces

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