MATEC Web of Conferences
Volume 13, 2014ICPER 2014 - 4th International Conference on Production, Energy and Reliability
|Number of page(s)||6|
|Section||Energy and Fuel Technology|
|Published online||17 July 2014|
Investigation and Measurement of Copper Nanofluid Impact on Thermal Efficiency of Solar Collectors
1 Associate Professor, Mechanical Engineering Department,Universiti Teknologi PETRONAS, Malaysia
2 M.Sc. Student Islamic Azad University of Iran, Science and Research Branch, Faculty of Environment & Energy, Energy Engineering Department, Tehran, Iran
a Corresponding author: firstname.lastname@example.org
This study compared the impacts of using copper nanofliud to enhance the efficiency of flat solar collectors with closed loop and under forced convection heat transfer circumstances to traditional work fluids. Various concentrations of nanoparticles in water and water/glycol, from 250ppm to 3000ppm, were examined for volume fraction impact. Results indicate that the laboratory tests were different from those under real conditions because of the high concentration of nanoparticles used in laboratory tests; however, by using nanofluid (even with low concentrations around 0.3%) solar collector efficiency improved (3.2%).Results have also shown that the use of copper nanofluid in ethylene glycol as the base fluid causes a significant reduction in collector efficiency, due to the increase in viscosity. However, using higher flow rates caused the heat transfer rate to rise because of increased turbulence.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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