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One-half kilogram of water executes a Carnot power cycle. During the isothermal expansion, the water is heated until it is a saturated vapor from an initial state where the pressure is 1.5 MPa and the quality is 25%. The vapor then expands adiabatically to pressure of 100 kPa while doing 403.8 kJ/kg of work.
a) Evaluate the heat and work for each process, in kJ.
b) Evaluate the thermal efficiency.
compare the thermal efficiency of a two-stage gas turbine with regeneration reheating and intercooling to that of a
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A section of vertical wall is to be constructed from ready-mix concrete poured between forms. The wall is to be 3m high, .25m thick and 5m wide. Calculate the force exerted by the ready-mix concrete on each form. Determine the line of application of ..
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steam expands in a turbine steadily at a rate of 25000 kgh entering at 6 mpa and 450degc and leaving at 20 kpa as a
A vertical piston-cylinder device, which is insulated, initially contains 15 kg of water, 9 kg of which is in the vapor phase. The pressure inside the cylinder is maintained constant at 0.3 MPa by mass of the piston. Now steam at 0.8 MPa and 500 °C i..
an ideal combined rankine cycle contains a reheat and a open feedwater heater this is also referred to as a
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