Elementary Principles 334 - 8.75 (cont'd) Moisture content...

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8-55 8.75 (cont’d) Moisture content of exiting chips: 0.065 kg water 100% 9.8% 15% meets design specification 0.600 kg dry chips + 0.065 kg water ×=< (c) References : Dry air, H O 2 l bg , dry chips @ 0 ° C. substance m in ± H in m out ± H out Air HO 2 l dry chips 15.02 0.400 0.600 100.2 79.5 39.9 15.02 0.065 0.6 94.8 4.184 T 2.10 T m air in kg DA, ± H air in kJ/kg DA m in kg DC, ± H in in kJ/kg DC Energy Balance: out out in in ˆˆ 0 136.8 1.532 0 89.3 C Hm H m H T T Δ= =⇒ + =⇒= ° ∑∑ 8.76 a. T h TT h r as wb a db Fig. 8.4-1 2 C C kg H O kg DA = ==° = 45 10% 210 00059 .. b. T h Th wb r db a = = 60% 268 0 0142 . C C kg H O kg DA Fig. 8.4-1 2 H O added: 2 15 kg air
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