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109年 - 109 國立臺灣大學_碩士班招生考試_化學工程學研究所:輸送現象及單元操作#106060
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(4) (8 points)
(a) Give the definition of the "selectivity ratio" and "distribution coefficient' in extraction? (6 points)
相關申論題
(b) Which property in distillation has the same significance as the distribution coefficient? (2 points)
#452525
(5) (6 points) The following figure shows the relationship between the pressure drop and the gas velocity in a packed column where the liquid flows down wards and the gas stream goes upwards. What are the names and the meanings of point X and Y?
#452526
(1) Derive the Fick's first law for the absolute molar flux NA. (6 points)
#452527
(2) Show. (5 points)
#452528
(3) If B is stagnant, show that the absolute molar flux Na is always pointing from higher CA to lower CA. (5 points)
#452529
(1) Please explain the working principle of this cooler. (5 water out points)
#452530
(2) A psychometric chart can be used to estimate the maxinum temperature drop of the air obtainable with such cooler. Sketch the chart with the marks on important properties (8 points) and describe how to estimate the maximum temperature drop using the chart. (4 points).
#452531
(3) Is this type of cooler suitable for uise in Taiwan? Why? (3 points)
#452532
(1) Find T1(the temperature at t=Rc) without solving any differential equations. (8 points) (Hint: overall heat balance may help)
#452533
(2) Write down the differential equation and the boundary conditions needed to solve Tc, the temperature in the cladding. Find T0-T1, the temperature drop across the cladding. You are asked to find the answer without solving Tr, the temperature in the sphere of fissionable material. (10 points)
#452534
相關試卷
110年 - 110 國立臺灣大學_碩士班招生考試_部分系所:輸送現象及單元操作#101948
110年 · #101948
109年 - 109 國立臺灣大學_碩士班招生考試_化學工程學研究所:輸送現象及單元操作#106060
109年 · #106060
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