An Investigation on the Thermal Effusivity of Nanofluids Containing Al2O3 and CuO Nanoparticles
| Autor: | Azmi Zakaria, Monir Noroozi, Zaidan Abd Wahab, Mohd Maarof Abd. Moksin |
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| Rok vydání: | 2012 |
| Předmět: |
Ethylene Glycol
Materials science pyroelectric thermal diffusivity nanoparticles thermal properties Sonication Metal Nanoparticles Nanoparticle Nanotechnology Thermal diffusivity Article Catalysis Inorganic Chemistry chemistry.chemical_compound Nanofluid Phase (matter) Aluminum Oxide Plant Oils Particle Size Physical and Theoretical Chemistry Olive Oil Molecular Biology Spectroscopy Viscosity Organic Chemistry Temperature Water General Medicine Computer Science Applications chemistry Chemical engineering Dispersion (chemistry) Ethylene glycol Copper Thermal effusivity |
| Zdroj: | International Journal of Molecular Sciences International Journal of Molecular Sciences; Volume 13; Issue 8; Pages: 10350-10358 |
| ISSN: | 1422-0067 |
| DOI: | 10.3390/ijms130810350 |
| Popis: | The thermal effusivity of Al(2)O(3) and CuO nanofluids in different base fluids, i.e., deionized water, ethylene glycol and olive oil were investigated. The nanofluids, nanoparticles dispersed in base fluids; were prepared by mixing Al(2)O(3), CuO nanopowder and the base fluids using sonication with high-powered pulses to ensure a good uniform dispersion of nanoparticles in the base fluids. The morphology of the particles in the base fluids was investigated by transmission electron microscopy (TEM). In this study, a phase frequency scan of the front pyroelectric configuration technique, with a thermally thick PVDF pyroelectric sensor and sample, was used to measure the thermal effusivity of the prepared nanofluids. The experimental results of the thermal effusivity of the studied solvents (deionized water, ethylene glycol and olive oil) showed good agreement with literature values, and were reduced in the presence of nanoparticles. The thermal effusivity of the nanofluid was found to be particularly sensitive to its base fluid and the type of nanoparticles. |
| Databáze: | OpenAIRE |
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