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Consider a simple ideal Rankine cycle using water at a supercritical pressure. Such a cycle has the potential advantage of minimizing local temperature differences between the fluids in the steam generator, such as when the high-temperature energy source is the hot exhaust gas from a gas turbine engine. Calculate the thermal efficiency of the cycle if the state entering the turbine is 8000 lbf/in.2, 1300 F and the condenser pressure is 0.95 lbf/in.2. What is the steam quality at the turbine exit?
A cross section of a cottage, 20 ft wide, is an isosceles triangle. If the slope of a side is 1.75 and there is a second floor 8 ft above the ground floor, what isthe width of the second floor?
A pumped storage power plant is to be designed for a flow rate of 6,000 cfs per penstock. The penstocks are 20 ft. in diameter, with a relative roughness of 0.008. The elevation difference between the two reservoirs is 340 ft.
the t-component of the force f is known to be 75n. determine the n-component and the magnitude of f.
List two properties of a fluid explain the term viscosity as used in fluids explain the term specific gravity as used in fluids
Air enters a compressor at ambient conditions of 100 kPa, 300 K and exits at 800 kPa. If the isentropic compressor efficiency is 85%, what is the second-law efficiency of the compressor process?
a trapezoidal canal 6m wide at the bottom and having a side slope of 1v2h carries water with a mean velocity of 1.0ms
for a laminar flow of a newtonian fluid in a tube of a circular cross section, show that the ratio of mean shear to the wall shear rate is 2/3
The grains of wood in the board make an angle of 20 degrees with the horizontal as shown. Determine the normal and shear stresses that act perpendicular and parallel to the grains if the board is subjected to an axial load of 250 N.(Dimensions l=3..
For the remaining 15 m of its length, the diameter remains uniform at 200 mm. The height of water level in the tank is 5 m above the axis of the pipe. Determine the velocity of flow at the exit of the pipeline considering all losses. Assume Darcy'..
The specified concrete strength fc for a new building is 6000 psi. Calculate the required average strength fc for the concrete ( a) if there are no prior test results for concrete with a compressive strength within 1000 psi of fc made with sim-ilar m..
Calculate the air mass flow rate in the shaft; the rate at which moisture is evaporated into the airstream and the rate at which heat is added to the shaft.
List some of the advantages and disadvantages of rectangular primary sedimentation tanks over circular sedimentation tanks which must be considered prior to the selection.
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