http://hdl.handle.net/20.500.12128/17825
Tytuł: | Thermophysical properties of nanofluids composed of ethylene glycol and long multi-walled carbon nanotubes |
Autor: | Brzóska, Karolina Jóźwiak, Bertrand Golba, Adrian Dzida, Marzena Boncel, Sławomir |
Słowa kluczowe: | nanofluids; multi-walled carbon nanotubes; 1,2-ethanediol; thermal conductivity; viscosity |
Data wydania: | 2020 |
Źródło: | "Fluids" Vol. 5, iss. 4 (2020), art. no. 241 |
Abstrakt: | In this work, thermal conductivity, viscosity, isobaric heat capacity, and density of stable carbon-based nanofluids are presented. The nanofluids under study are composed of 1,2-ethanediol (ethylene glycol, EG) and long multi-walled carbon nanotubes (MWCNTs), so-called ‘in-house 16h’ (synthesized in our laboratory via catalytic chemical vapor deposition during 16 h with a diameter of 60–80 nm and length of 770 m). Poly(N-vinylpyrrolidone) (PVP) was used to increase the stability of nanofluids. The nanofluids were prepared via an ultrasonication-assisted, three-step method while their key thermophysical characteristics were obtained using the hot-wire technique and rotary viscometer. As a result, the addition of MWCNTs significantly improved the thermal conductivity of nanofluids by 31.5% for the highest 1.0 wt% (0.498 vol%) long MWCNT content, leaving the Newtonian character of the nanofluids practically intact. |
URI: | http://hdl.handle.net/20.500.12128/17825 |
DOI: | 10.3390/fluids5040241 |
ISSN: | 2311-5521 |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
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Brzoska_Thermophysical_properties_of_nanofluids_composed_of_ethylene_glycol.pdf | 1,61 MB | Adobe PDF | Przejrzyj / Otwórz |
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