Showing papers by "Shahab Sokhansanj published in 1993"
TL;DR: In this article, the Halsey equation was used to determine the heat of sorption of alfalfa pellets and found that the heat decreased exponentially with moisture content and approached that of free water at about 16% moisture content.
39 citations
TL;DR: In this paper, the shrinkage coefficients for both wheat and canola did not show a correlation with drying temperature but varied linearly with relative humidity of the drying air, and the relationship was also linear for wheat, a starchy grain.
Abstract: The bulk volume shrinkage of canola and wheat were measured for the temperature range of 20–80C and relative humidity range of 15–90%. the volume decreased exponentially with time as seed moisture content was reduced. For canola, an oilseed, shrinkage and moisture reduction were linearly correlated with a shrinkage coefficient of about 1.0. For wheat, a starchy grain, the relationship was also linear but the coefficient was greater than 1.3. the shrinkage coefficients for both wheat and canola did not show a correlation with drying temperature but varied linearly with relative humidity of the drying air.
37 citations
TL;DR: In this paper, the authors determined the moisture diffusivity in the hilum, cotyledons, and seedcoat of lentils from thin-layer drying tests at temperatures from 30 to 50° C.
Abstract: The objective of this study was to determine the moisture diffusivity in the hilum, cotyledons, and seedcoat of lentils from thin-layer drying tests at temperatures from 30 to 50° C. The moisture diffusivity in the cotyledons was determined from the drying data on dehulled lentils; the diffusivity in the seedcoat was estimated from samples with wax-sealed hilum; and the diffusivity in the hilum was obtained from control and wax-sealed lentils. The moisture diffusivity was in the order of 10–5m2/h in the hilum and 10–7m2/h in the cotyledons. The diffusivity in the seedcoat decreased from the order of 10–9m2/h to 10–11m2/h, when the moisture content was reduced from 20 to 10% on a dry basis. The diffusivities were expressed in Arrhenius-type equations.
30 citations
TL;DR: In this paper, a dynamic model for flat-plate solar collectors is presented, which describes the fluid, plate and cover temperatures of the collector by three different differential equations, including Taylor series expansion and the Runge-Kutta method.
16 citations
TL;DR: In this article, the drying time of prewilted alfalfa and fresh chopped alalfa was investigated using a thin layer drier and repeated crushing of up to three passes increased the drying rate, compared to a single crushing.
Abstract: Fresh chopped alfalfa (65 to 80% moisture content) and prewilted chopped alfalfa (20 to 40% moisture content) were treated mechanically and chemically and then were dried in a thin layer drier. Stems crushed between smooth and flat surfaces or between two longitudinally grooved rollers dried three times faster than the uncrushed stems. Repeated crushing of up to three passes increased the drying rate, compared to a single crushing. The application of potassium carbonate reduced drying time by half in fresh alfalfa but did not decrease the drying time of prewilted alfalfa. At both moisture levels, leaves dried twice as fast as crushed stems and four times faster than uncrushed stems.
15 citations
TL;DR: In this paper, a computer program was developed in order to simulate the solar-heated and natural air hay drying systems, and the model was validated by comparing the predicted results with the experimental data obtained from a batch dryer and field-drying for fresh alfalfa crop.
12 citations
TL;DR: Hessian fly puparia raised on young wheat plants and mixed with chopped hay were heat treated in a rotary drum and the complete kill of insects was ensured.
8 citations
TL;DR: In this paper, a computer drying simulation model was developed, validated and used to investigate in-bin drying of canola grain (rapeseed) under typical weather conditions for a Canadian Prairie location.
8 citations
Journal Article•
7 citations
TL;DR: In this paper, a finite element analysis for a set of non-linear coupled heat and mass transfer equations is presented, and the model is used to simulate the transient temperature and moisture distribution in alfalfa cubes during moisture absorption.
5 citations