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Comparative study of convective heat transfer in water and water based magnetizable nanofluid for thermal applications

F. D. STOIAN1,2,* , S. HOLOTESCU1, V. STOICA1, D. BICA3,2, L. VÉKÁS3,2

Affiliation

  1. Research Center for Thermal Machines and Equipments, Transportation and Pollution Control, “Politehnica” University of Timişoara, 1 Mihai Viteazu Bv., Timişoara, RO-300222, Romania
  2. National Research Center for Engineering Systems with Complex Fluids, “Politehnica” University of Timişoara, 1 Mihai Viteazu Bv., Timişoara, RO-300222, Romania
  3. Laboratory of Magnetic Liquids, Romanian Academy, Timişoara Division, CCTFA, 24 Mihai Viteazu Bv., Timişoara, RO-300223, Romania

Abstract

An experimental research carried out to investigate the convective heat transfer in a water based magnetizable nanofluid by natural convection is reported. The hot wall was a flat disk, heated from below. The open air played the role of the cold wall, as the upper surface of the fluid was free, at atmospheric pressure and temperature. Comparative tests were conducted using distilled water and water based magnetizable nanofluid. Several heating regimes were tested. The addition of nanoparticles in a usual heat transfer fluid as water led to a decrease in the heat transfer performance by natural convection..

Keywords

Magnetizable nanofluid, Natural convection heat transfer, Nanoparticles.

Submitted at: Feb. 25, 2008
Accepted at: April 4, 2008

Citation

F. D. STOIAN, S. HOLOTESCU, V. STOICA, D. BICA, L. VÉKÁS, Comparative study of convective heat transfer in water and water based magnetizable nanofluid for thermal applications, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 4, pp. 773-776 (2008)