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Consider the supercritical cycle in Problem 9.30 and assume that the turbine first expands to 3 MPa, followed by a reheat to 500?C, with a further expansion in the low-pressure turbine to 10 kPa. Find the combined specific turbine work and the total specific heat transfer in the boiler.
Problem 9.30
Consider an ideal Rankine cycle using water with a high-pressure side of the cycle 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 the instance in which 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 30 MPa, 550?C and the condenser pressure is 10 kPa. What is the steam quality at the turbine exit?
determine the horizontal spacing of the vertical drains if the drains are installed in triangular grid to reach 90% of primary consolidation in 1.5 years after the commencement of fill placement
A cylindrical vessel is pressurized to 1.7 MPa. The structure on which the vessel rests becomes damaged, resulting in uneven support that causes a twisting moment T0 of 8 (106) N-m on the vessel.
Ten years after an earthquake, you find that the shear strain rate changes sign 30 km from the fault. What is your estimate of the asthenospheric viscosity? (You may assume that all the other parameters are the same as in the previous problem.)
A rigid tank contains 40 lbm of air in 20 psia and 70 degrees F. More air is added to the tank untill the pressure and temperature rise to 35 psia and 90 degrees F, respectively.
Compute the corrected horizontal distance for the following conditions: Temperature: 25oC Tape length: 29.990m Slope angle: -3o42' Slope measurement: 211.416m
etermine the minimum footing length L, and the placement of the columns on the footing that will place the resultant load at the centroid of the footing. The footing must extend at least 500 mm beyond the edges of columns A and C.
the tank contains water to depth of 2m and oil (sg=.8) on top of the water to a depth of 1m detrermine the magnitude and location of the resultant fluild force acting on one end of the tank
Draw A flow net. Show flow lines, flow Channels, and Equipotential lines. Using flow nets, please provide an estimate of seepage rate below the dam. Your submittal will provide the basis for an environmental impact statement regarding the construc..
If the sedimentation basin in problem 1 (ignore the floc basin for this problem) receives a flow of 1400 gallons per minute, and has a depth of 10 feet, what are the length and width dimensions if the basin is designed to remove particles that have a..
Determine the Modulus of Elasticity of Concrete by the ACI formula for a concrete cylinder that has a unit weight of 120pcf (1920kg/m^3) and a compressive strength of 3000 psi (21MPa).
A structural tension member of 10 ft. long with a square cross-section is subjected to a load of 120,000 lb. There is a choice between an aluminum alloy and structural steel, with the following information given for each.
a 200 lb homogeneous gate of 10 ft width and 5 ft long is hinged at point a and held in place by 12 ft long brace as
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