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Effect of System Variables on Heat Transfer to Canned Particulate Non-Newtonian Fluids During End-Over-End Rotation

Paper ID Volume ID Publish Year Pages File Format Full-Text
19570 43076 2007 8 PDF Available
Title
Effect of System Variables on Heat Transfer to Canned Particulate Non-Newtonian Fluids During End-Over-End Rotation
Abstract

Apparent heat transfer coefficients hap and Ua were evaluated to quantify the heat transfer process with particulates in high viscosity non-Newtonian fluids in end-over-end thermal processing. An orthogonal array L16 experiment was used to examine the significances of system factors on hap and Ua values with plastic particles in CMC aqueous solutions. The variance analysis showed that rotation speed, liquid viscosity, retort temperature, particle material and particle concentration were significant factors (P < 0.05) for hap and Ua. The effects of can size was also significant for hap. A central composite rotatable design (CCRD) experiment and two full factorial experiments were carried out to study the effects of those significant factors on hap and Ua values. Results showed that with the decrease of liquid viscosity and the increase of rotation speed, particle density and retort temperature, hap and Ua values increased. With the increase of can size hap values decreased. With the particle concentration increasing hap and Ua values firstly increased and then decreased with further increase in particle concentration.

Keywords
heat transfer coefficient; high viscosity; non-Newtonian fluids; particulate; rotational retort
First Page Preview
Effect of System Variables on Heat Transfer to Canned Particulate Non-Newtonian Fluids During End-Over-End Rotation
Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 85, Issue 1, March 2007, Pages 34–41
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering