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Steam enters the first turbine stage of a vapor power cycle with reheat and regeneration at 32 MPa, 600°C and expands to 8 MPa. A portion of the flow is diverted to a closed feedwater heater at 8 MPa and the remainder is reheated to 560°C before entering the second turbine stage. Expansion through the second turbine stages occurs to 1 MPa where another portion of the flow is diverted to a second closed feedwater heater at 1 MPa. The remainder of the flow expands through the third turbine stage to 0.15 MPa where a portion of the flow is diverted to an open feedwater heater operating at 0.15 MPa, and the rest expands through the fourth stage turbine to the condenser pressure of 6 kPa. Condensate leaves each closed feedwater heater as saturated liquid at the respective extraction pressure. The feedwater streams leave each closed feedwater heater at a temperature equal to the saturation temperature at the respective extraction pressure. The condensate streams from the closed heaters each pass through traps into the next lower pressure feedwater heater. Saturated liquid exiting the open heater is pumped to the steam generator pressure. If each turbine stage has an isentropic efficiency of 85% and the pumps operate isentropically 1) Draw a schematic of this cycle and number all your points 2) Determine the thermal efficiency of the cycle 3) Calculate the m dot 1 in kg/hr for a net cycle output of 500MW.
a six-station automatic assembly line has an ideal cycle time of 12 sec. downtime occurs for two reasons. first
sometime when riding an elevator or driving up or down a hilly road a persons ears pop as the pressure difference
natural gas at 70 f and standard atmospheric pressure of 14.7 psi is compressed isentropically to a new absolute
a reactor setpoint wasincreased from 160 psig to 190 psig. the reactor pressure transmitter was recalibrated from 0-200 psig to 0-300 psig. what is the percent span for the old and new setpoints?
What is the force P to keep the system in equilibrium for the angles specified?
Saturated liquid-vapor mixture of water, called wet steam, in a steam line at 2000 kPa is throttled to 100 kPa and 120?C. What is the quality in the steam .
calculate the incidence it of the tailplane for trim if the elevator deflection e is zero. ii calculate the neutral
25 washers have a combined mass of 1 lb. how much money is recovered per day from the sale of scrap washers?
steam enters a diffuser at 20 psia and 240of with a velocity of 900 fts and exits as saturatednbspvapor at 240of and
a preheater involves the use of condensing steam at 100? on the inside of a bank of tubes to heat air that enters at 1
solve the problem in the image. do it step wise in detail. this question is from book fracture mechanics - an
As the hollow steel (G = 77 GPa) shaft shown rotates at 180 rpm, a stroboscopic measurement indicates that the angle of twist of the shaft is 3°. Determine
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