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Sodium hydroxide solution is to be concentrated from 10% to 30% by weight using a single effect evaporator operating at atmospheric pressure, The liquid circulates through a calandria consisting of 1 m long tubes 32 mm OD and 28 mm ID. Dry saturated steam is circulated through a calandria at 394 K. If the overall heat transfer coefficient is 1.75 kW m-2 how many tubes will the calandria require to concentrate 0.075 kg s-1 of dilute solution?
The specific heat of the solution can be assumed to be constant at 4.18 kJ kg-1 K. The latent heat of evaporation is 2270 kJ kg-1 for the feed and steam, the boiling point rise is 15 K. The feed temperature is 303 K.
The 1.2-Mg mine car is being pulled by winch M mounted on the car. If the winch generates a constant power output of 30 kW, and the car starts from rest, determine the speed of the car when t = 5s.
The beam ABC of length L has two different moments of inertia (2I in AB, I in BC) and a constant elastic modulus E. It is fixed at point A has a roller support at point B and a load P at C. a. Sketch the deflected shape of this beam.
Determine the the max weight of the block that the system does not fail if the max tension that can be developed in cable DB is 100N and the max compression that can be developed in tower CD is 100N.
A quartzite sample in a compression testing machine is 180mm long and 54mm in diameter. what is the stress under a load of 100kN? if the modulus of elasticity is 102kN/mm2, find the strain develope in the sample.
what are reasons for difference in the coefficient of kinetic friction on horizontal surface with a hanging mass at constant velocity compared to object one on incline
knowing the tension in cable AC is 1065 N, determine the moment about each of the coordinate axes of the force exerted on the plate at C
Determine the magnitude and direction of the force P in so that the resultant of P and the 900N force is a vertical force of 2700N directed downward using.
An interesting application of the relative motion equations is the experimental determination of the speed at which rain falls. Say you perform an experiment in your car in which you park your car in the rain and measure the angle the falling rain..
A 1045 steel will be heat treated in air at 900 C. What is the carbon concentration at 0.4 mm below the surface after 6 hours
After falling from rest from a height of 32 m, a 0.45 kg ball rebounds upward, reaching a height of 22 m. If the contact between ball and ground lasted 1.5 ms, what average force was exerted on the ball?
FOR WHAT REASON WOULD YOU NEED TO USE DARCY'S LAW IN THE FOELD RATHER THAN IN THE LABORATORY
A high strength steel is developed with a yield stress of 1460 MPa and a critical stress intensity factor of 30MPa(m)^0.5. Calculate the size of the initial flaw that will cause failure in an infinite plate when the load applied is 50% of the load..
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