Mass Transfer Coefficient Enhancement Using Spiral Wound Rod as Turbulence P romoter in an Electrolytic Cell

N V Satyanarayana Derangula; V Satynarayana Josyula; K Sivaprasada Rao; K Ramesh Chandra

doi:10.17485/IJST/v15i23.521

Article

Mass Transfer Coefficient Enhancement Using Spiral Wound Rod as Turbulence P romoter in an Electrolytic Cell

VIEWS 739
PDF 148

Indian Journal of Science and Technology

DOI: 10.17485/IJST/v15i23.521

Year: 2022, Volume: 15, Issue: 23, Pages: 1166-1172

Original Article

Mass Transfer Coefficient Enhancement Using Spiral Wound Rod as Turbulence P romoter in an Electrolytic Cell

N V Satyanarayana Derangula^1*, V Satynarayana Josyula², K Sivaprasada Rao³, K Ramesh Chandra⁴

¹Associate Professor, Department of Chemical Engineering, R.V.R & J.C.College of Engineering, Guntur-522019, India
²Associate Professor, Department of Physics, R.V.R & J.C.College of Engineering, Guntur- 522019, India
³Assistant Professor, Department of Chemical Engineering, R.V.R & J.C.College of Engineering, Guntur-522019, India
⁴Associate Professor, Department of Chemical Engineering, R.V.R & J.C.College of Engineering, Guntur-522019, India

*Corresponding Author
Email: [email protected]

Received Date:07 March 2022, Accepted Date:16 May 2022, Published Date:29 June 2022

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: to improve efficiency of process equipment by increasing the mass transfer coefficient with a spirally wound rod as the turbulence promoter. Methods:The function of facet promoters, whirl generators, and test sections of different congruous shapes increase the mass transfer coefficients at the reaction surface. Diffusion-controlled redox (ferricyanide - ferrocyanide) reaction has been chosen for the study. Limiting current data from the reduction of ferricyanide is used for mass transfer coefficient calculation. A set of three geometric parameters such as pitch(P), height(H), and width(W) of the promoter were investigated in the current study. Findings: An increase in the mass transfer coefficient values with the increment of flow rate of electrolyte from 0.088 m/s to 0.263 m/s was observed. A rise in the promoter height from 0.03 to 0.07m enhanced the mass transfer coefficient by 25.7 fold, while the increase in the width of the promoter from 0.01 to 0.04m resulted in a rise of the mass transfer coefficient by 26.3 fold. On the contrary, the mass transfer coefficient decreased upon increase in the pitch of the promoter from 0.01 to 0.04m, but overall enhancement is 25.7 fold. The increase in the mass transfer coefficient on an average compared to a rectangular turbulence promoter was 5.71 fold. Novelty: The spiral wound rod as a promoter increased the mass transfer coefficient several folds compared to other promoters. The spiral wound rod is quite simple to manufacture, has low cost and ease of maintenance. Therefore, the promoter used in the study could be employed for heat and/or mass transfer enhancement in Industrial applications.

Keywords: Limiting current; Promoter; Mass transfer Coefficient; Swirl flow; Redox reaction

References

Ruthven DM. Adsorption (Chemical Engineering) Encyclopedia of Physical Science and Technology. 2003;p. 251–271. Available from: https://doi.org/10.1016/B0-12-227410-5/00013-2
Lin CS, Denton EB, Gaskill HS, Putnam GI. Diffusion controlled electrode reactions. Industrial and Engineering Chemistry. 1951;43(9):2136–2143. Available from: https://doi.org/10.5006/1686
Lin CS, Moulton RW, Putnam GL. Mass transfer between solid wall and fluid streams. Industrial and Engineering Chemistry. 1953;45:636–640. Available from: https://doi.org/10.1021/ie50519a048
Rao TP, Prasad PR, Sujatha V. Process Intensification with Coaxially Placed Entry Region Vanes Assembly Turbulence Promoter in Homogeneous Flow. Indian Chemical Engineer. 2018;60(2):162–178. Available from: https://doi.org/10.1080/00194506.2017.1333463
Eiamsa-Ard S, Promvonge P. Heat transfer characteristics in a tube fitted with helical screw-tape with/without core-rod inserts. International Communications in Heat and Mass Transfer. 2007;34(2):176–185. Available from: http://dx.doi.org/10.1016/j.icheatmasstransfer.2006.10.006
Subbaiah T, Vijetha P, Marandi B, Sanjay K, Minakshi M. Ionic Mass Transfer at Point Electrodes Located at Cathode Support Plate in an Electrorefining Cell in Presence of Rectangular Turbulent Promoters. Sustainability. 2022;12(2):880. Available from: https://doi.org/10.3390/su14020880
Rao TP, Prasad PR. Development of model for studies on momentum transfer in electrochemical cells with entry region coil as turbulence promoter. Development of model for studies on momentum transfer in. 2018;54:3015–3024. Available from: http://dx.doi.org/10.1007/s00231-018-2322-6
Promvonge P, Eiamsa-ard S. Heat transfer augmentation in a circular tube using V-nozzle turbulator inserts and snail entry. Experimental Thermal and Fluid Science. 2007;32:332–340. Available from: http://dx.doi.org/10.1016/j.expthermflusci.2007.04.010
Mahinpey N, Ojha M, Trass O. Transient mass and heat transfer in a smooth pipe. International Journal of Heat and Mass Transfer. 2001;44(20):3919–3930. Available from: http://dx.doi.org/10.1016/S0017-9310(01)00039-4

Copyright

© 2022 Derangula et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Published By Indian Society for Education and Environment (iSee)