EXPERIMENTAL INVESTIGATION OF VISCOSITY AND SPECIFIC HEAT CAPACITY OF IRON OXIDE FLUIDS FOR HEAT TRANSFER APPLICATIONS

1 NOVÁK Dalibor
Co-authors:
1 ŘEHÁČKOVÁ Lenka 1 NOVÁK Vlastimil 1 ROSYPALOVÁ Silvie 1 MATÝSEK Dalibor 1 KAWULOKOVÁ Monika 1 ZLÁ Simona 1 SMÝKALOVÁ Aneta 1 SMETANA Bedřich 1 DROZDOVÁ Ľubomíra
Conference:
31st International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, Czech Republic, EU, May 18 - 19, 2022
Proceedings:
Proceedings 31st International Conference on Metallurgy and Materials
Pages:
103-108
ISBN:
978-80-88365-06-8
ISSN:
2694-9296
Published:
30th June 2022
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
44 views / 14 downloads
Abstract

Modifying liquids with nanoparticles is widely recognized as a practical approach for improving their heat transfer characteristics without significantly increasing viscosity. This work examines the effect of adding hematite and acid-leached blast furnace sludge particles on the rheological and thermal properties of deionized water. The investigated fluids were prepared by dispersing a certain amount of hematite and leached blast furnace sludge particles in distilled water using a sonicator. The modifier content in the liquid varied up to 5 wt%. Pristine iron oxides with particle sizes of approximately 5 micrometers and 50 nanometers were used as model systems. Leached sludge particles were deagglomerated for an extended period prior to measurement. The rheological behavior of the fluids was studied using an FRS 1600 furnace rheometer system designed for viscosity measurement from 1 mPa·s, and the specific heat capacity of hematite and leached blast furnace sludge was obtained by SENSYS EVO TG-DSC calorimeter equipped with 3D-sensor technology. Furthermore, the characterization of the prepared liquids was also supported by the results of SEM analysis. The results of this study provide the foundation for the use of leached blast furnace sludge as a potential heat transfer fluid.

Keywords: Heat transfer fluid, iron oxides, blast furnace sludge, viscosity, specific heat capacity

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