Simultaneous Heat and Mass Diffusion in Biological Materials

Husain, Ashfaq; Chen, C.S.; Clayton, J. T.

doi:10.1016/s1537-5110(17)30749-3

Cited by 56 publications

(17 citation statements)

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“…The effect of drying temperature on optimal value was negligible. This agreed with the contention (Hasain et al, 1973;Zuritz and Singh, 1981) that the effect of temperature on surface transfer coefficients could be neglected in parametric determination studies.…”

Section: Resultssupporting

confidence: 89%

Heat and Mass Transfer Coefficients in Drying of Starch Based Food Systems

Irudayaraj

1999

Journal of Food Science

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Experiments were conducted to measure the temperature and moisture content of starch and starch-fructose samples during drying. A two-dimensional finite element model was developed. An exhaustive parameter estimation technique was applied in conjunction with the model and drying data to estimate the moisture filtration coefficient k p and the surface heat and mass transfer coefficients, h q and h m . Minimization of the deviation between experimental and simulation data resulted in a k p value of 0.51*10 Ϫ7 kg.m/N.h and 0.52*10 -7 kg.m/N.h for the starch and starch-fructose samples. Corresponding values of h q were 15.8 W/m 2 K and 21.2 W/ m 2 K and that of h m were 1.12*10 Ϫ6 m/s and 0.94*10 Ϫ6 m/s respectively.

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Section: Resultssupporting

confidence: 89%

Heat and Mass Transfer Coefficients in Drying of Starch Based Food Systems

Irudayaraj

1999

Journal of Food Science

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“…and endosperm) were incorporated into the drying model which gave good agreement with the experimental data. Husain et al (1973) solved the coupled heat and moisture diffusion equation for rough rice assuming the kernel as an f i n i t e cylinder. They reported that the diffusion coefficient was a function of temperature and moisture content.…”

Section: Introduciionmentioning

confidence: 99%

A Method of Determination of the Diffusion Coefficient Based on Kernel Moisture Content and Its Temperature

et al. 1992

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“…Similarly, the one‐dimensional infinite cylinder moisture diffusion for ground alfalfa yielded diffusivity values ( D ′) around 4.7 × 10 −9 to 5.70 × 10 −8 m 2 /s (Yang et al 2002), which differed from the low‐oil DDGS diffusivities values in Table V. The moisture diffusivity for corn was found to be 1.19 × 10 −11 to 5.82 × 10 −11 m 2 /s for temperature ranges from 25 to 40°C and 75% RH with initial moisture content of 37% (wb) (Muthukumarappan and Gunasekaran 1990) and 1.63 × 10 −11 to 1.02 × 10 −8 m 2 /s for rough rice (Hussain et al 1973). Hence, moisture diffusivity values for low‐oil DDGS were much closer to the low value for corn.…”

Section: Resultsmentioning

confidence: 61%

Air and Moisture Transport Properties of Low‐Oil DDGS

et al. 2017

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Distillers dried grains with solubles (DDGS) are widely used as feed for cattle, dairy, and swine because of their protein, fiber, amino acids, fat, and other vital nutrients. Corn ethanol plants in the United States recently have started extracting oil from DDGS to gain additional profit, thus producing low‐oil DDGS. So far, there has been no comprehensive study reported with bulk handling and flowability properties of low‐oil DDGS. We measured the air resistance, moisture diffusivity, and air permeability properties for low‐oil DDGS at different temperature and relative humidity conditions, along with some important physical and chemical properties. Physical property comparisons between regular and low‐oil DDGS showed differences in key properties such as particle size, color, density, porosity, and angle of repose. The modified Henderson model predicted the equilibrium moisture content (EMC)–equilibrium relative humidity (ERH) relationship of low‐oil DDGS with a low standard error of regression value (0.008); it showed no pattern in the residuals and was judged the most appropriate model tested for EMC‐ERH predictions. Results of EMC‐ERH nonlinear modeling were used to define conditions for moisture diffusivity. Moisture diffusivities of low‐oil DDGS at varying drying temperatures ranged from 0.74 × 10−11 to 1.77 ×10−11m2/s. The properties are important for understanding and modeling heat and moisture transport through and flow properties of low‐oil DDGS.

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Simultaneous Heat and Mass Diffusion in Biological Materials

Cited by 56 publications

References 0 publications

Heat and Mass Transfer Coefficients in Drying of Starch Based Food Systems

Heat and Mass Transfer Coefficients in Drying of Starch Based Food Systems

A Method of Determination of the Diffusion Coefficient Based on Kernel Moisture Content and Its Temperature

Air and Moisture Transport Properties of Low‐Oil DDGS

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