FIG. 6. Effect of air flow rate and percentage of air recycle on simulated
value of specific energy consumption (SEC) of one-stage drying of 220 min
(drying temperature of 110C) and two-stage crumb rubber drying at
initial drying temperature of 130 (40 min) and 110C (180 min), initial
moisture content (Min) of 45% dry basis and desired final moisture content
(Mf ) of 0.5% dry basis, crumb rubber bed depth 25 cm (air flow rates
of 432 and 600m3=min-m3 of rubber are equivalent to 2.2 and 5m=s,
respectively).