Experimental and numerical study of Pool boiling and critical heat flux enhancement using water based silica Nanofluids

Experimental and Numerical Studies on saturated pool boiling have been carried out over a nichrome wire submerged in both distilled water and silica–water based nanofluids. The concentrations of the silica nanoparticles are varied from 0.01 vol.% to 0.05 vol.% in step size of 0.01. Numerical simulat...

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Bibliographic Details
Published in:Heat and mass transfer 2021-10, Vol.57 (10), p.1593-1607
Main Authors: Zafar, Shariq, Adil, Md, Azhar, Md, Siddiqui, M. Altamush
Format: Article
Language:English
Subjects:
Boiling
Distilled water
Engineering
Engineering Thermodynamics
Heat
Heat and Mass Transfer
Heat flux
Heat transfer
Industrial Chemistry/Chemical Engineering
Nanofluids
Nanoparticles
Nichrome (trademark)
Original
Silicon dioxide
Thermodynamics
Wire
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Summary:Experimental and Numerical Studies on saturated pool boiling have been carried out over a nichrome wire submerged in both distilled water and silica–water based nanofluids. The concentrations of the silica nanoparticles are varied from 0.01 vol.% to 0.05 vol.% in step size of 0.01. Numerical simulation has been carried out by using Mixture Multiphase Approach. Moreover, heat flux values by applying traditional Rohsenow correlation and the surface-liquid constant ( C sf ) for wire and nanofluids is proposed that fits the experimental as well as numerical data. From the present work, it is inferred that the numerical solutions are in good agreement with the experimental data. Furthermore, thin nanoparticle coatings on heating surface were observed after each experiment. Critical Heat Flux enhancement in nanofluids may be due to the deposition of nanoparticles over the heater surface. Also, the Critical Heat Flux of nanofluids was found to be 38.5% higher (at 0.03 vol.% of silica nanoparticles concentration) as compared to distilled water.
ISSN:0947-7411
1432-1181
DOI:10.1007/s00231-021-03047-4