Heat transfer enhancement by application of nano-powder |
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| Authors: | M T Hamed Mosavian S Zeinali Heris S Gh Etemad and M Nasr Esfahany |
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| Institution: | (1) Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;(2) Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran |
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| Abstract: | In this investigation, laminar flow heat transfer enhancement in circular tube utilizing different nanofluids including Al2O3 (20 nm), CuO (50 nm), and Cu (25 nm) nanoparticles in water was studied. Constant wall temperature was used as thermal boundary
condition. The results indicate enhancement of heat transfer with increasing nanoparticle concentrations, but an optimum concentration
for each nanofluid suspension can be found. Based on the experimental results, metallic nanoparticles show better enhancement
of heat transfer coefficient in comparison with oxide particles. The promotions of heat transfer due to utilizing nanoparticles
are higher than the theoretical correlation prediction. |
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