We investigated the temperature and relative humidity distribution in the drying chamber. The results, as shown in Figure 3, show that the temperature in each plane in the drying chamber increased rapidly during the initial stage and then gradually until a steady state was attained. The largest average temperature difference between any planes is 4°. The relative humidity, as anticipated, decreased with increasing temperature, as shown in Figure 4. The initial and final relative humidity values are 61.1% and 28% respectively.