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A power plant uses the Rankine cycle. The maximum desired temperature in the boiler is 500 C. If the turbine is reversible, and the outlet of the turbine (input to condenser) is saturated vapor at p = 25 kPa, determine: A) The operating pressure of the boiler. B) The thermal efficiency. C) The crculation rate to provide 1 MW net power output.
Now you want to improve the efficiency and circulation rate. You suggest operaing the cycle utilizing two reversible tubines with saturated vapor exit streams. All conditions remain the same except that the feed to the first turbine is steam at 450 C an 6 MPa. The feed to the second stage is at 500 C. Determine the improvement in efficiency and circulation rate relative to to the previous case.
Find a solid steel shaft to transmit 100 hp at a speed pf 1200 rpm, if the maximum shearing stress is not to exceed 7500 psi.
A flocculation basin equipped with revolving paddles is 60 ft long (the direction of flow). 45 ft wide, and 14 ft deep and treats 10 mgd. The power input to provide paddle-blade velocities of 1.0 and 1.4 fps for the inner and outer blades,
A concrete mix with a 3 inch slump, w/c (water content) ratio of 0.50, and sand with a fineness modulus of 2.4 contrains 1700 lb/cubic yard of coarse aggregate. Compute the required weight of the coarse
A dye streak was started at a point in the flow field at time t=0, and the path of the particle in the fluid was also traced from that same point starting at the same time. Draw to scale the streakline, path-line of the particle
Calculate the depth of flow upstream of the bridge assuming that the pier coefficient of drag is 1.2. Drag Force CD Af (V1^2)/2 CD=1.2
The design of arobotic system calls for ther two-rod mechanis shown. Rods AC and BD are connected by a lider block D as shown. Negelcting th eggect of friction, write a omputer porgram and use it to determine the the couple
At what air temperature will exhaled breath condense by self-nucleation. Assume that a saturation ratio of 4.3 is required.
The suspended load exerts a force F = 600 lb at A and bar OA weighs 200 lb. Assume that the bar's weight acts at its midpoint. Determine the tensions in the cables and the reactions at the ball and socket support O.
Briefly explain how variation in water table elevation can result in overconsolidation of a soil and list oehr possible mechanisms that cause over consolidation of soils.
Water flows on the inside of a steel pipe with an inner diameter of 2.5cm. The wall thickness is 2mm, and the convection coefficient on the inside is 500 W/m2oC. The convection coefficient on the outside is 12 W/m2oC.
If the discharge is 500cfs, what power output may be expected from the turbine. Assume that the turbine efficiency is 90% and that the overall head loss is 1.5V 2/2g, where V is the velocity in the 7 ft penstock.
A 200-kg mass is hanging from a hook conncted to a pulley. The chord around the pulley is connected ot the overhead support at two points. What is the tension in each cord connected to the support if the angle of the chord from vertical is 0º
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