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Nucleate pool boiling heat transfer of binary nano mixtures under atmospheric pressure around a smooth horizontal cylinder

journal contribution
posted on 2023-01-31, 04:00 authored by Mohsen Sarafraz, S M Peyghambarzadeh, S A Alavi Fazel, N Vaeli
Influence of Al2O3nanoparticles on nucleate pool boiling heat transfer of diluted binary water-glycerol mixtures has been experimentally measured up to heat flux 91 kW/m2at diluted volume fractions of 1% to 5% of glycerol into pure water at volumetric concentrations 0.5%, 1% and 1.5% of Al2O3nanoparticles. Obtained results indicate that presence of nanoparticles into the mixtures result in increasing the pool boiling heat transfer coe_cient values and also result in decreasing the wall superheat temperature of surface. Increased values of heat transfer are increased with increasing the volume fractions of Al2O3too. Generally, it is concurred that Al2O3nanoparticles typically enhance the pool boiling heat transfer coe_cient of binary water-glycerol mixture in comparison with absence of nanoparticles circumstances, up to 25% at 1.5% Al2O3. Additionally, new simple semi - mathematical model has been proposed for a rough estimating of enhanced values with uncertainty about 8%.

History

Journal

Periodica Polytechnica Chemical Engineering

Volume

57

Pagination

71 - 77

ISSN

0324-5853

eISSN

1587-3765

Publication classification

C1.1 Refereed article in a scholarly journal

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