Performance Evaluation of Double-Hub Paddle Wheel Aerator |
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| Authors: | Sanjib Moulick B C Mal |
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| Affiliation: | 1Lecturer (Senior Scale), Agricultural and Food Engineering Dept., IIT, Kharagpur, 721302 West Bengal, India (corresponding author). E-mail: sanjib_moulick72@yahoo.co.uk
2Professor, Agricultural and Food Engineering Dept., IIT, Kharagpur, 721302 West Bengal, India. E-mail: bmal@agfe.iitkgp.ernet.in
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| Abstract: | Aeration performance of a 500?mm diameter double-hub paddle wheel aerator was tested in a brick masonry tank of 5.9×2.9×1.6?m3. The prime objective of the present study is to evaluate the aeration performance of double-hub paddle wheels at different dynamic conditions. The results showed that the oxygen transfer simulation curve for double hub almost matched that of a single-hub paddle wheel. However, the power consumption simulation curve for double hub distinctly deviated from that of a single-hub paddle wheel due to the fact that if geometric and process conditions remain the same, a double-hub paddle wheel consumes more power than a single hub. Hence, a separate power consumption simulation equation was developed for a double-hub paddle wheel. The optimum dynamic condition producing maximum standard aeration efficiency is also presented along with a sample calculation. |
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| Keywords: | Aeration Dimensional analysis Design Oxygen transfer |
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