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Electricity and process heat requirements of a manufacturing facility are to be met by a cogeneration plant consisting of a gas turbine and a heat exchanger for steam production. The plant operates on the simple Brayton cycle between the pressure limits of 100 and 1200 kPa with air as the working fluid. Air enters the compressor at 30C. Combustion gases leave the turbine and enter the heat exchanger at 1050C, and leave the heat exchanger of 350C, while the liquid water enters the heat exchanger at 25C and leaves at 200C as a saturated vapor. The net power produced by the gas-turbine cycle is 800 kW. Assuming a compressor isentropic efficiency of 82 percent and a turbine isentropic efficiency of 88 percent and using variable specific heats, determine
(a) the mass flow rate of air,
(b) the rate at which steam is produced in the heat exchanger.
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift?
A water pump is driven by a steam turbine. The steam at the inlet is at 10 bars and 280 C, and leaves the turbine at 1.5 bars. Saturated liquid water enters the pump at 20 C at 100,000 kg/hr, and the water exits at 100 bars.
an air-water-vapor mixture enters a cooler-dehumidifier at the rate of 1000 ft3min. the mixture enters at 14.7 psia
Determine a Fourier series representation of the periodic voltage e(t) shown in Figure 7.14.
Calculate the change in frequency, velocity amplitude, and acceleration amplitude if the maximum deflection remains 10 cm.
Design a corrosion-resistant steel to use for a pump that transports liquid helium (He) at 4 K in a superconducting magnet.
1. An aluminum bar 125 mm (5.0 in.) long and having a square cross section 16.5 mm (0.65 in.) on an edge is pulled in tension with a load of 66,700 N (15,000 lbf), and experiences an elongation of 0.43 mm (1.7 X 10-2 in.). As- suming t..
determine the largest value of
Find Positive Limit Load and Positive Ultimate Limit Load of Given Aerobatic Aircraft-Max Gross Weight = 10,000 lb.4.Find Maneuvering speed (Va) of given aerobatic aircraft W=10,000 lb.
a rankine cycle operating with ammonia is heated by some low temperature source so the highest t is 120oc at a pressure
Again using your result for the density of states, calculate the total energy of the system at zero temperature as a function of the Fermi energy, ?F.
the upside-down steel a frame shown in the figure is to be bolted to steel beams on the ceiling of a machine room using
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