Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
172898 | Computers & Chemical Engineering | 2012 | 16 Pages |
An important component of the pulsed electric field (PEF) technology is the treatment chamber in which the food is exposed to high voltage pulses. Non-uniformity of the treatment, particularly with respect to the electric field distribution, is a common problem in continuous PEF treatment chambers. A previously developed and validated Multiphysics model of a pilot-scale PEF system with co-linear electrode configuration was simplified and embedded into an iterative algorithm, automatically modifying the model's treatment chamber geometry and dimensions, and evaluating the simulated process with respect to a set of performance indicators. The algorithm was capable of identifying configurations that were superior to the standard co-linear treatment chamber configuration. A 3D Multiphysics model with the identified geometrical properties was developed and a corresponding treatment chamber manufactured. The Multiphysics model was validated by comparing measured and predicted temperatures at various process conditions induced in NaCl solution and apple juice.
► Modelling platform developed for improving treatment uniformity in PEF processing. ► Platform model can be utilised for optimisation studies on objective process targets. ► Dimensionless parameter derived for chamber performance evaluation. ► Treatment chamber identified by algorithm superior to current chambers.