CINÉTICA DEL SECADO SOLAR PARA PEREJIL
DOI:
https://doi.org/10.59627/cbens.2008.1450Keywords:
Solar drying, Drying kinetics, Thin-layer drying, D rying of parsley, Effective diffusivityAbstract
The kinetics of thin-layer drying for leaves and stems of parsley using solar drying in clear day conditions is studied in this paper. Experiments were performed in and indirect dryer, designed and built in the Solar Energy Laboratory of National University of Río Cuarto, Argentina. This dryer has a drying cabinet structure made of wood and covered by black polyethylene, which receives hot air from a solar collector. According to the experiences, three different models of solutions for the second Fick’s Law were investigated assuming that diffusion coefficient is constant or variable with the Fourier number (Fo). The drying data were fitted to determine the constants of the evaluated models. The performance of the models was investigated evaluating the goodness of fit. Results show a variable diffusion coefficient while a constant surface concentration was the best boundary condition. Values for the effective diffusivity, plots of radiation, temperature and humidity obtained during the days of drying experiments are shown.
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