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Sustainability 2016, 8(5), 489; doi:10.3390/su8050489

Design of Stirrer Impeller with Variable Operational Speed for a Food Waste Homogenizer

1
Energhx Research Group, 353 Faculty of Engineering, Department of Mechanical Engineering, University of Lagos, Akoka-Yaba, Lagos 101017, Nigeria
2
Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1H 7K4, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: Andrew Kusiak
Received: 10 February 2016 / Revised: 2 May 2016 / Accepted: 11 May 2016 / Published: 20 May 2016
(This article belongs to the Section Energy Sustainability)

Abstract

A conceptualized impeller called KIA is designed for impact agitation of food waste in a homogenizer. A comparative analysis of the performance of KIA is made with three conventional impeller types, Rushton, Anchor, and Pitched Blade. Solid–liquid mixing of a moisture-rich food waste is simulated under various operational speeds, in order to compare the dispersions and thermal distributions at homogenous slurry conditions. Using SolidWorks, the design of the impellers employs an Application Programming Interface (API) which acts as the canvas for creating a graphical user interface (GUI )for automation of its assembly. A parametric analysis of the homogenizer, at varying operational speeds, enables the estimation of the critical speed of the mixing shaft diameter and the deflection under numerous mixing conditions and impeller configurations. The numerical simulation of the moisture-rich food waste (approximated as a Newtonian carrot–orange soup) is performed with ANSYS CFX v.15.0. The velocity and temperature field distribution of the homogenizer for various impeller rotational speeds are analyzed. It is anticipated that the developed model will help in the selection of a suitable impeller for efficient mixing of food waste in the homogenizer. View Full-Text
Keywords: food waste homogenizer; mixing; impeller; operational speed; critical speed; food waste; Shaft diameter food waste homogenizer; mixing; impeller; operational speed; critical speed; food waste; Shaft diameter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kayode, I.A.; Ogedengbe, E.O.B.; Rosen, M.A. Design of Stirrer Impeller with Variable Operational Speed for a Food Waste Homogenizer. Sustainability 2016, 8, 489.

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