An investigation of produce cooling tunnel performance

dc.contributor.authorMartins, J.P.
dc.contributor.authorRankin, G.W.
dc.date.accessioned2016-07-18T11:40:42Z
dc.date.available2016-07-18T11:40:42Z
dc.date.issued2015
dc.description.abstractPapers presented to the 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 20-23 July 2015.en_ZA
dc.description.abstractThe numerical results from a simple computational fluid dynamic model of a forced air agricultural produce cooling tunnel are compared with experimental measurements made on a full scale tunnel. The experimental tunnel consists of four pallets of produce each holding a number of boxes arranged in a specified, but non-uniform stacking order. The tunnel is located in a large cold storage room while the cold air is drawn at a steady rate through the boxes using a large axial flow fan. The time dependent temperature and pressure values are experimentally determined at a number of strategic locations within the tunnel. The experimentally determined values of the tunnel pressures as well as the produce temperature as functions of time are plotted in a non-dimensional manner. These are then compared with the results of the computational fluid dynamics model. In the model the boxes filled with the agricultural produce, cucumbers in this case, are approximated using porous jumps for the boxes and a non-isotropic porous media model with empirically determined coefficients for the produce. A commercially available finite volume package is used to solve for the time dependent temperature, pressure and flow field. The discrepancies between the experimental and numerical results are discussed and suggestions made for improving the numerical model.en_ZA
dc.description.librarianam2016en_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationMartins, JP & Rankin GW 2015, 'An investigation of produce cooling tunnel performance',en_ZA
dc.identifier.isbn97817759206873
dc.identifier.urihttp://hdl.handle.net/2263/55903
dc.language.isoenen_ZA
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.rights© 2015 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.en_ZA
dc.subjectNumerical modelen_ZA
dc.subjectTunnel pressuresen_ZA
dc.subjectLarge axial flowen_ZA
dc.subjectTemperatureen_ZA
dc.titleAn investigation of produce cooling tunnel performanceen_ZA
dc.typePresentationen_ZA

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