ISSN:
1745-4530
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The application of a three-dimensional finite-element computer program package, TLM-FOOD-HEATING (FAUSTUS Scientific Corp., Victoria, Canada), on the simulation of capacitive radio frequency (RF) dielectric heating of radish and alfalfa seeds was investigated. Seeds placed inside polystyrene boxes were described as a rectangle, where nonuniform boundary conditions presented complications in the simulation. Temperature and moisture dependent thermal properties and temperature and frequency dependent dielectric properties of seeds were considered in the modeling. the time-temperature profiles of seeds at different locations within the rectangle seeds boxes were simulated. the model was then validated using experimental data. Simulated temperature distribution in seeds was consistent with the measured results. the absolute temperature differences between simulated and measured values in radish seeds packed in a 100 × 25 × 50 mm rectangle seeds box were 1.8C, 1.1C, 8.9C, and 13.6C in the center, top, edge, and bottom locations, respectively, when seeds reached about 80C, and were 0.9C, 2.4C, 7.75C, and 14.3C, respectively, in alfalfa seeds box in the same conditions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-4530.2003.tb00600.x
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