Impeller Submergence Depth for Stirred Tanks

Thiyam T. Devi  -  Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
Annu P. Sinha  -  Agriculture Engineering, JNKVV, Jabalpur, India
Meena Thakre  -  Agriculture Engineering, JNKVV, Jabalpur, India
*Bimlesh Kumar  -  Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
Received: 4 Mar 2011; Published: 22 Nov 2011.
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Language: EN
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Impeller submergence governs the performance of mixing tanks employed in oxygen transfer operation. Present work experimentally investigates the effect of impeller submergence depths on oxygen transfer and corresponding power consumption. It has been found that at higher range of impeller submergence, mixing tanks consume less power and gives higher values of oxygen transfer coefficient. Optimal range of submergence depth is 0.7 to 0.9 times the impeller diameter. Copyright ©2011 BCREC UNDIP. All rights reserved.

(Received: 4th March 2011; Revised: 12nd July 2011; Accepted: 14th July 2011)

[How to Cite: T.T. Devi, A.P. Sinha, M. Thakre, and B. Kumar. (2011). Impeller Submergence Depth for Stirred Tanks. Bulletin of Chemical Reaction Engineering & Catalysis, 6 (2): 123-128. doi:10.9767/bcrec.6.2.826.123-128]

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Keywords: oxygen transfer; power consumption; rotational speed; submerged depth;stirred tanks; two-film theory

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