Two-phase ferrofluid systems: Surfactants and thermal properties of iron oxide nanofluids for condensation
Two-phase ferrofluid systems: Surfactants and thermal properties of iron oxide nanofluids for condensation
Evaporation heat transfer with ferrofluids has the potential to improve heat and mass transfer compared to conventional two-phase systems. The ferromagnetic nanoparticles which control the rheology and heat transfer properties of the ferrofluid, must be coated with a dispersing agent, also referred to as a surfactant, to prevent particle agglomeration. This paper compares ferromagnetic iron-oxide particles coated with fatty acid, polymeric and hydrophobic surfactants after undergoing evaporation and condensation. The outcome was measured by assessing the dispersion of the ferrofluid after condensation. The fatty acid surfactants demonstrated the best dispersion after condensation proving temperature stability.
Zabek, D.
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Grzebielec, A.
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Cmok, L.
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Hribar Boštjančič, P.
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Mertelj, A.
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16 December 2019
Zabek, D.
7281d29f-829d-4f54-89a2-ee4f48a357af
Grzebielec, A.
cb8b0ca1-dfab-4a20-9dfd-1ee078f608fb
Cmok, L.
06977607-a086-4b13-91e9-45feb97b956b
Hribar Boštjančič, P.
c74659df-0e42-4804-a7fe-cc629991fc06
Mertelj, A.
86785d01-cc20-4aed-9627-0b8321b9e8a0
Zabek, D., Grzebielec, A., Cmok, L., Hribar Boštjančič, P. and Mertelj, A.
(2019)
Two-phase ferrofluid systems: Surfactants and thermal properties of iron oxide nanofluids for condensation.
E3S Web of Conferences, 137.
(doi:10.1051/e3sconf/201913701015).
Abstract
Evaporation heat transfer with ferrofluids has the potential to improve heat and mass transfer compared to conventional two-phase systems. The ferromagnetic nanoparticles which control the rheology and heat transfer properties of the ferrofluid, must be coated with a dispersing agent, also referred to as a surfactant, to prevent particle agglomeration. This paper compares ferromagnetic iron-oxide particles coated with fatty acid, polymeric and hydrophobic surfactants after undergoing evaporation and condensation. The outcome was measured by assessing the dispersion of the ferrofluid after condensation. The fatty acid surfactants demonstrated the best dispersion after condensation proving temperature stability.
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e3sconf_rdpe2019_01015
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Published date: 16 December 2019
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Local EPrints ID: 496761
URI: http://eprints.soton.ac.uk/id/eprint/496761
ISSN: 2267-1242
PURE UUID: 5e97e1a8-8f1a-4ccf-8304-f6fd49566155
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Date deposited: 07 Jan 2025 23:14
Last modified: 22 Aug 2025 02:46
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Author:
D. Zabek
Author:
A. Grzebielec
Author:
L. Cmok
Author:
P. Hribar Boštjančič
Author:
A. Mertelj
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