Thermophysical profile of ethylene glycol based nanofluids containing two types of carbon black nanoparticles with different specific surface areas

• Published in: Journal of molecular liquids 2021-03, Vol.326, p.115255, Article 115255
• Main Authors: Sobczak, Jolanta, Vallejo, Javier P., Traciak, Julian, Hamze, Samah, Fal, Jacek, Estellé, Patrice, Lugo, Luis, Żyła, Gaweł
• Format: Article
• Language: English
• Subjects: Carbon black; Engineering Sciences; Heat capacity; Nanofluid; Surface tension; Thermal conductivity; Viscosity
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2020.115255

The paper summarizes results of experimental studies on thermophysical and electrical properties of ethylene glycol based nanofluids containing carbon black nanoparticles. Two types of nanoparticles differing in size and specific surface area were used to develop nanofluids. During the examination thermal conductivity, isobaric heat capacity, mass density, nanofluid-air surface tension, dynamic viscosity, refractive index and electrical conductivity were measured in strict controlled temperature 298.15 K. Obtained results indicate that the specific surface area has great influence on these fundamental properties of nanofluids developed with carbon nanoparticles. Finally, the enhancement of electrical conductivity described in the paper is one of the highest reported for the nanofluids in available literature. •• Two types of carbon black nanoparticles were used in EG based nanofluids.•• Thermal conductivity, heat capacity, mass density, surface tension were examined.•• Electrical conductivity and refractive index were investigated as well.•• Flow and viscosity curves were presented with Herschel-Bulkley model fitting.•• Specific surface area of particles influence the physical properties of nanofluids