The heat transfer coefficient correlation and the thermal
properties of paddy can be found in the relevant section
of this study. The moisture content of the paddy was assumed
to be constant at 14% dry throughout the heating
period, which is generally in the range for the moisture content
of stored paddy.
Fig. 2 shows the computed temperature distribution
inside a spherical paddy kernel with 3.5 mm equivalent
diameter at inlet air temperature of 70 C and air velocity
of 2.5 m/s. The temperature data of both solutions,
obtained from analytical and numerical methods, appeared
to be indistinguishable. The intra-temperatures became
uniform across the grain kernel and were elevated to inlet
air temperature within 60 s of commencement.
Figs. 3 and 4 show predicted temperature profiles inside
a paddy kernel assumed to be cylindrical in the air condir