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Études expérimentales et numériques de la conductivité thermique des nanofluides Al2O3/éthylène glycol/eau et TiO2/éthylène glycol/eau.

Experimental and numerical investigations on thermal conductivity of Al2O3/ethylene glycol water and TiO2/ethylene glycol water nanofluids.

Numéro : pap. n. 299

Auteurs : KUKREJA R., NANDYALA M.

Résumé

The use of high power density microelectronic devices has led to increased heat flux in electronic chips. Mostly fluids are employed as heat exchanging media in such devices. In the present study, investigations on temperature dependent thermal conductivity of ethylene glycol-water mixture based nanofluids have been carried out. Ethylene glycol and water mixture in the ratio of 30:70 by volume has been used as a base fluid with nanoparticles of Al2O3 and TiO2 with varying concentration varying from 0.25% to 1% by volume. The thermal conductivity of the nanofluids is measured by transient hot wire method in the temperature range of 20°C to 50°C. The experimental results have been compared with the theoretical models to indicate the ability of the models to predict the thermal conductivity and discrepancies were indicated. The maximum increment of 16.07% in the thermal conductivity was observed for 1% Al2O3 Nano fluid at 50°C, while the minimum of 0.61%, at 20°C was observed for 0.25% TiO2.

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Pages : 10

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Détails

  • Titre original : Experimental and numerical investigations on thermal conductivity of Al2O3/ethylene glycol water and TiO2/ethylene glycol water nanofluids.
  • Identifiant de la fiche : 30025979
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0299

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