THERMAL SCIENCE

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Tommaso Pesso

,

Stefano Piva

LAMINAR FORCED CONVECTION IN A CYLINDRICAL COLLINEAR OHMIC STERILIZER

ABSTRACT
The present work deals with a thermo-fluid analysis of a collinear cylindrical ohmic heater in laminar flow. The geometry of interest is a circular electrically insulated glass pipe with two electrodes at the pipe ends. For this application, since the electrical conductivity of a liquid food depends strongly on the temperature, the thermal analysis of an ohmic heater requires the simultaneous solution of the electric and thermal fields. In the present work the analysis involves decoupling the previous fields by means of an iterative procedure. The thermal field has been calculated using an analytical solution, which leads to fast calculations for the temperature distribution in the heater. Some considerations of practical interest for the design are also given.
KEYWORDS
ohmic heating, forced convection, laminar flow
PAPER SUBMITTED: 2015-11-05
PAPER REVISED: 2016-05-14
PAPER ACCEPTED: 2016-05-24
PUBLISHED ONLINE: 2016-05-30
DOI REFERENCE: https://doi.org/10.2298/TSCI151105124P
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 5, PAGES [2217 - 2226]
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Laminar forced convection in a cylindrical collinear ohmic sterilizer

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence