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An experimental study on thermal conductivity of MgO nanoparticles suspended in a binary mixture of water and ethylene glycol
Affiliation:1. Department of Mechanical Engineering, Faculty of Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran;2. Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan, ROC;1. Mechanical Engineering Department, Transilvania University of Brasov, 29, Bulevardul Eroilor, Brasov 500036, Romania;2. National Institute for Laser, Plasma and Radiation Physics, 409, Atomistilor Street, PO Box MG-36, Magurele, Bucharest 077125, Romania;1. Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran;2. Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan, ROC;3. Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;4. Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;1. Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran;2. Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran;3. Young Researchers and Elite Club, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Abstract:In the present study, the effects of solid volume fraction and temperature on the thermal conductivity of MgO/water–EG (60:40) nanofluid are discussed. Samples of nanofluid are provided by two step method at different solid concentrations, including 0.1%, 0.2%, 0.5%, 0.75%, 1%, 1.5%, 2% and 3%. The experiments are performed for different temperatures ranging from 20 to 50 °C, using KD2 pro thermal analyzer which employed transient hot wire to measure thermal conductivity. The finding shows that thermal conductivity of nanofluid increases with increasing solid volume fraction or temperature. Based on the experimental data, new correlation for modeling the thermal conductivity of MgO/water–EG (60:40) for different solid volume fractions and temperatures was proposed.
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