| Autor: |
Barai, Divya P., Bhanvase, Bharat A., Żyła, Gaweł |
| Předmět: |
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| Zdroj: |
Nanomaterials (2079-4991); Jun2022, Vol. 12 Issue 12, p1961-N.PAG, 10p |
| Abstrakt: |
Nanofluid preparation is a crucial step in view of their thermophysical properties as well as the intended application. This work investigates the influence of ultrasonication duration on the thermal conductivity of Fe 3 O 4 nanofluid. In this work, water-based Fe 3 O 4 nanofluids of various volume concentrations (0.01 and 0.025 vol.%) were prepared and the effect of ultrasonication time (10 to 55 min) on their thermal conductivity was investigated. Ultrasonication, up to a time duration of 40 min, was found to raise the thermal conductivity of Fe 3 O 4 nanofluids, after which it starts to deteriorate. For a nanofluid with a concentration of 0.025 vol.%, the thermal conductivity increased to 0.782 W m − 1 K − 1 from 0.717 W m − 1 K − 1 as the ultrasonication time increased from 10 min to 40 min; however, it further deteriorated to 0.745 W m − 1 K − 1 after a further 15 min increase (up to a total of 55 min) in ultrasonication duration. Thermal conductivity is a strong function of concentration of the nanofluid; however, the optimum ultrasonication time is the same for different nanofluid concentrations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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