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Steam is the working fluid in an ideal reheat Rankine cycle. Steam enters the first-stage turbine at 8.0 MPa, 480 degrees Celcius, and expands to 0.7 MPa. It is then reheated to 440 degrees Celcius before entering the second-stage turbine, where is expands to the condensor pressure of 0.008MPa. The net power output is 100 MW. Determine (a) the thermal efficiency of the cycle, (b) the mass flow rate of steam, in kg/h, (c) the rate of heat transger out from the condensing steam as it passes through the condensor, in MW. Discuss the effects of reheat on the vapor power cycle. Show working and state all assumptions.
air flows through a turbine airfoil passage in the shape of a converging-only nozzle with an exit cross-sectional area
a 60-kg block of nickel at 5c and a 35-kg block of silver at 50c are placed in a very large lake where the water
a small projectile is fired vertically downwards into a fluid medium with an initial velocity of 60 ms. due to the drag
a free piston-cylinder system initially contains 8 kg of saturated liquid water at 275 kpa initial state. the water in
Determine the resulting change
At a section in a passage, the pressure is 150 kPa (abs), the temperature is 10 deg C, and the speed is 120 m/s. For isentropic flow of air, determine the Mach number at the point where the pressure is 50 kPa (abs). Sketch the passage shape.
The maximum flow past a circular cylinder is 2 X the Up stream velocity. The max velocity occurs at the center line of the top of the cylinder.
we are separating a mixture of methanol and water in a flash drum at 1atm pressure. using the equilibrium data feed
a mass of 3kg of nitrogen at 100kpa and 20oc is contained in a piston-cylinder device. it is now expanded to a final
1. determine the solar elevation at solar noon for winer solstice equinox and summer solstice for elevations 30 40 and
Two flat, rectangular plates with a lateral dimension w*l lie parallel, one above the other, a distance h apart. The gap between them is filled with molten polymer.
a for a rectangular coordinate system we developed the navier stokes equation for vx. now reduce that equation to
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