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Abstract
The objective of the present research was to establish a combined electromagnetic and heat transfer model to predict the temperature distribution in food loads during microwave and forced air heating in a microwave combination oven. The microwave process was modelled using the finite difference time domain (FDTD) method to numerically solve Maxwell’s equations in three dimensions, assuming the food properties to be constant. The power dissipated at each cell in the computational domain was subsequently calculated. Heat transfer was modelled using Fourier’s equation for heat conduction with convective boundary conditions. The conduction model was spatially discretised using finite elements. The power dissipation field was transferred to the finite element heat transfer code using interpolation modules to couple the models. Validation experiments were made for comparisons with predicted temperatures inside a model food load with brick-shaped geometry. Good qualitative agreement between predicted and measured temperature profiles was obtained.
Additional information
Notes on contributors
B. Wäppling-Raaholt
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
N. ScheerHawk
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
S. Galt
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
J.R. Banga
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
A. Alonso
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
E. Balsa-Canto
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
J. Van Impe
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
T. Ohlsson
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.
B.M. Nicolaï
B. Wappling-Raaholt and T. Ohlsson are affiliated with SIK — The Swedish Institute for Food and Biotechnology, Goteborg, Sweden. N. Scheerlinck and B. Nicola:I are affiliated with the Laboratory of Postharvest Technology, Katholieke Universiteit Leuven, Leuven, Belgium. S. Galt is affiliated with the Department of Electromagnetics, Chalmers University of Technology, Giiteborg, Sweden. J.R.Banga and E. Balsa-Canto are affiliated with IIM-CSIC, Vigo, Spain. A. Alonso is affiliated with Universidade de Vigo, Spain and J.V. Impe with BioTec, Leuven, Belgium. The paper is a result of the collaborative work in the EU project FAIR CT96–1192.