Experimental investigation of free single jet impingement using Al2O3-water nanofluid |
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| Affiliation: | 1. Laboratory of Ocean Energy Utilization of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Civil Engineering, Dalian University of Technology, Dalian, China;1. Research and Development Division, TATA Steel, Jamshedpur 831001, India;2. Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;3. Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India;1. Department of Chemical Engineering, Faculty of Engineering, Mahanakorn University of Technology, Bangkok 10530, Thailand;2. Department of Food Engineering, Faculty of Engineering, King Mongkut''s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;3. Department of Mechanical Engineering, Faculty of Engineering, Mahanakorn University of Technology, Bangkok 10530, Thailand |
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| Abstract: | Four volume fractions Al2O3-water nanofluids (0.5%, 1%, 1.5% and 2%) are introduced into free single jet impingement experiment as working fluids. The Reynolds numbers, impact angles and nozzle-to-plate distances (H/D) are variable for investigating the heat transfer performance. As to get observation of flow characteristics in nanofluid, heat transferring performance would be studied in this case. Experimental results show that there is a relationship between convective heat transferring coefficient and nanoparticles suspendability within base fluid. Convective heat transfer coefficient is proportional to the extent of nanoparticles concentration, Reynolds number while it decreases with the increasing angle of impacting. In addition, considering the influence of the suspended nanoparticles and the condition of impinging jet, a heat transfer correlation has been proposed combining the influence of the suspended nanoparticles and the condition of impinging jet. |
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