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> 93年 - 93 淡江大學 轉學考 質能均衡#55981
93年 - 93 淡江大學 轉學考 質能均衡#55981
科目：
轉學考-質能均衡 |
年份：
93年 |
選擇題數：
0 |
申論題數：
3
試卷資訊
所屬科目：
轉學考-質能均衡
選擇題 (0)
申論題 (3)
【已刪除】(1) A labeled flowchart of a continuous steady-state two-unit distillation process is shown if Figure 1. Each stream contains two components, A and B, in different proportions. Three streams whose flow rates and/or compositions are not known arc labeled 1, 2 and 3. Calculate the unknown flow rates and compositions of streams 1, 2 and 3. [35 pts]
【已刪除】(2) In a wood drier the hot air must contain at least 2 weight percent water to prevent the wood from drying too rapidly and splitting or warping, as shown in Figure 2. The original fresh air fed contains 1 weight percent water. Wood is dried from 20 weight percent water to 5 weight percent water. The wet air leaving the drier contains 4 weight percent water. Calculate the amount of wet air that must be returned lo the drier if 20001b
m
/hr of wet wood is dried. [35 pts]
【已刪除】(3) Fuel oil (say, c
18
H
36
) is burned in 50 percent excess dry air (excess above that required for complete combustion to co
2
and H
2
O )The products of combustion are dried to remove all the water, as shown in Figure 3, Analysis of the flue gas shows a ratio of CO
2
to CO of 2, on a molar basis. Calculate the flue gas composition. [30 pts]
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