Study on Boiling Heat Transfer of Ethylene Glycol/Deionized Water Based Al<sub>2</sub>O<sub>3</sub> Nanofluids Under Different Pressures

Yao, Shouguang; Teng, Zecheng; Huang, Xiaogan; Yang, Song; Zhang, Shili

doi:10.1166/nnl.2019.2865

Cited by 2 publications

(1 citation statement)

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“…There are relatively few bubbles in partial development stages and significant bubble coalescence has not yet occurred. During the full development stage, the bubbles appear to slip on the heated surface and merge into a mushroom-like and then escape from the water surface [21,22]. During the transitional boiling phase and the film boiling phase, the bubbles gradually form a gas film on the heating surface, and the heat transfer is carried out by means of heat conduction and radiation, which is likely to cause the device to burn out.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%