Abstract:
Several thermodynamic properties for maize, rough rice and wheat has been calculated using desorption isotherms available in the literature. It was obtained an analytical expression to predict the differential heat (isosteric) as function of moisture content using a three parameters equilibrium model, based on enthalpy-entropy compensation effect, which takes into account the effet of temperature. Two integral heats of sorption were calculated, the first from the slopes of the iso-spreading pressure lines and the second from integration of the differential heat. This last one was used to estimate the energy requirement to remove water from initial moisture content to different final moisture levels, which is useful in drying area. Finally it was calculated the differential and integral entropies of sorption as function of moisture content.
Registro:
Documento: |
Artículo
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Título: | Heats and entropies of sorption of cereal grains : A comparison between integral and differential quantities |
Autor: | Tolaba, M.P.; Suárez, C.; Viollaz, P. |
Filiación: | Departamento de Industrias, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 - Buenos Aires, Argentina
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Palabras clave: | Calculations; Desorption; Drying; Enthalpy; Entropy; Estimation; Integration; Mathematical models; Moisture; Thermal effects; Cereal grains; Desorption isotherms; Differential heat; Enthalpy entropy compensation effect; Heat of sorption; Integral entropies; Iso spreading pressure lines; Three parameter equilibrium model; Thermodynamic properties; drying; grains; sorption |
Año: | 1997
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Volumen: | 15
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Número: | 1
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Página de inicio: | 137
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Página de fin: | 150
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DOI: |
http://dx.doi.org/10.1080/07373939708917222 |
Título revista: | Drying Technology
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Título revista abreviado: | Dry. Technol.
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ISSN: | 07373937
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CODEN: | DRTED
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v15_n1_p137_Tolaba |
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Citas:
---------- APA ----------
Tolaba, M.P., Suárez, C. & Viollaz, P.
(1997)
. Heats and entropies of sorption of cereal grains : A comparison between integral and differential quantities. Drying Technology, 15(1), 137-150.
http://dx.doi.org/10.1080/07373939708917222---------- CHICAGO ----------
Tolaba, M.P., Suárez, C., Viollaz, P.
"Heats and entropies of sorption of cereal grains : A comparison between integral and differential quantities"
. Drying Technology 15, no. 1
(1997) : 137-150.
http://dx.doi.org/10.1080/07373939708917222---------- MLA ----------
Tolaba, M.P., Suárez, C., Viollaz, P.
"Heats and entropies of sorption of cereal grains : A comparison between integral and differential quantities"
. Drying Technology, vol. 15, no. 1, 1997, pp. 137-150.
http://dx.doi.org/10.1080/07373939708917222---------- VANCOUVER ----------
Tolaba, M.P., Suárez, C., Viollaz, P. Heats and entropies of sorption of cereal grains : A comparison between integral and differential quantities. Dry. Technol. 1997;15(1):137-150.
http://dx.doi.org/10.1080/07373939708917222