11–114 A small aluminum ball with D 5 2 mm and rs 5 2700 kg/m3 is dropped into a large container filled with oil at 408C (rf 5 876 kg/m3 and m 5 0.2177 kg/m·s). The Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 114 Problem 11-114
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11–128 An airplane has a total mass of 18,000 kg and a wing planform area of 35 m2. The density of air at the ground is Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 128 Problem 11-128
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11–112 During an experiment, three aluminum balls (rs 5 2600 kg/m3) having diameters 2, 4, and 10 mm Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 112 Problem 11-112
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11–126 Air at 308C flows over a 3.0-cm-outer-diameter, 45-m-long pipe with a velocity of 6 m/s. Calculate the drag Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 126 Problem 11-126
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11–111E Janie likes to drive with a tennis ball on her car antenna. The ball diameter is D 5 2.62 in and its equivalent Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 111 Problem 11-111E
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11–127 A 0.8-m-outer-diameter spherical tank is completely submerged in a flowing water stream at a velocity of Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 127 Problem 11-127
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11–124 Water at 108C flows over a 1.1-m-long flat plate with a velocity of 0.55 m/s. If the width of the plate is Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 124 Problem 11-124
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11–125 Water at 108C flows over a 3.75-m-long flat plate with a velocity of 1.15 m/s. If the width of the plate is 6.5 m, calculate the average friction coefficient over the entire plate. (Water properties at 108C are: r 5 999.7 kg/m3, m 5 1.307 3 1023 kg/m·s.) (a) 0.00508 (b) 0.00447 (c) 0.00302 (d ) 0.00367 Document Preview:
Questions – Mechanical Eng – Fluid Mechanics – Class Homework assignment – set 125 Problem 11-125
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questions—m….docx
12.10-4. Countercurrent Multistage Leaching of Halibut Livers. Fresh halibut livers contain- ing 25.7 wt % oil are to be extracted with pure ethyl ether to remove 95% of the oil in a countercurrent multistage leaching process. The feed rate is 1000 kg of fresh livers per hour. The final exit overflow solution is to contain 70 wt % oil. The retention of solution by the inert solids (oil-free liver) of the liver varies as follows (C1), where N is kg inert solid/kg solution retained and yA is kg oil/kg solution: YA 2.47 0.4 1.67 0.6 yA 4.880 1.39 0.81 .50 0.2 rt 2 Separation Process Principles Calculate the amounts and compositions of the exit streams and the tota of theoretical stages. l number
11.You have been charged with the responsibility of implementing a facilities design project for bagging ammonium nitrate fertilizers (granular substance) in 10, 20 and 30 kg, plastic and paper bags and shipping through railway box cars. The facility includes screw conveyor system for transporting fertilizers from the production plant to the bagging workstation, automatic weighing scale, turret hopper with spouts for bagging, heat sealer (for plastic bags)/sewing machine (for paper bags), steel wheel conveyor system for moving bags to railway box car and palletizer for stacking bags in the railway box car. (a) Explain the problems that you envisage with particular reference to heat sealer, sewing machine, steel wheel conveyor and palletizer. (b) State the factors that must be considered in the selection and installation—of the various material handling equipment.
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