Engineering, 18.02.2021 21:00 michaelortega5808
A steady-state countercurrent staged distillation column is separating ethanol from water. The feed is a 30.0 wt% ethanol, 70.0 wt% water mixture that is a saturated liquid at 1 atm pressure. Flow rate of feed is 10,000 kg/h. The column operates at a pressure of 1 atm. The reflux is returned as a saturated liquid. A reflux ratio of L/D = 3.0 is being used. Bottoms composition is XB = 0.05 (weight fraction ethanol), and distillate composition is xp = 0.80 (weight fraction ethanol). The system has a total condenser and a partial reboiler. The column is well insulated. Use the Lewis method to find the number of equilibrium contacts required if the feed is input on the second stage from the top.
Answers: 1
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
Engineering, 04.07.2019 18:10
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
A steady-state countercurrent staged distillation column is separating ethanol from water. The feed...
Mathematics, 20.10.2020 23:01
Business, 20.10.2020 23:01
Computers and Technology, 20.10.2020 23:01
English, 20.10.2020 23:01
English, 20.10.2020 23:01
Mathematics, 20.10.2020 23:01
Social Studies, 20.10.2020 23:01
Mathematics, 20.10.2020 23:01
Biology, 20.10.2020 23:01
Physics, 20.10.2020 23:01