Experimental investigation of anodized/ spray pyrolysed nanoporous structure on heat transfer augmentation |
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Authors: | S Kalaiselvam M S Gugan E Kuraloviyan R Meganathan A Niruthiya Priyan M R Swaminathan |
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Affiliation: | Department of Mechanical Engineering, Anna University Chennai, India - 600025 |
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Abstract: | This paper analyzes the effects of nanoporous surface on heat transfer temperaments of assorted thermal conducting materials.
A phenomenal proposal of wielding the surface roughness to ameliorate the heat transfer rate has been discovered. The maximum
increase of heat transfer rate procured by nanoporous layers is 133.3% higher than the polished bare metals of surface roughness
0.2 μm. This plays an imperative role in designing compact refrigeration systems, chemical and thermal power plants. Experimental
results picture a formidable upswing of 58.3% heat transfer in chemically etched metals of surface roughness 3 μm, 133.3%
in nanoporous surface of porosity 75–95 nm formed by electrochemical anodization, and porosity of 40–50 nm formed by spray
pyrolysis increases the heat transfer by 130%. Effects of porosity, flow velocity and scaling on the energy transfer are also
scrutinized. This paper also analyzes the multifarious modes of nanoporous fabrication, to contrive both prodigious and provident
system. |
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