Thermal Conductivity of Sunflower Seed as a Function of Moisture Content and Bulk Density
نویسندگان
چکیده
The thermal conductivity of sunflower seed was determined as a function of moisture content, bulk density and temperature which varies from 0.1 to 30.48% (w.b.) and 437.14 to 352.5 kg/m and 22 to 46°C, 3 respectively. The slope of the linear portion ( T versus ln(t)) method was used to analyze the line source heating data for thermal conductivity determination. Bulk density of sunflower seeds followed a multiply relationship with moisture content. Thermal conductivity increased with increasing moisture content and decreasing bulk density and the values were in the range between 0.1854 to 0.3047 W/mK. However, the effect of moisture content on increasing the thermal conductivity was more than that of bulk density. Regression equations were established which could be used to reasonably estimate the values of the thermal conductivity as a function of moisture content and bulk density.
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