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Consider an ideal steam regenerative Rankine cycle with two feedwater heaters, one closed and one open. Steam enters the turbine at 12.5 MPa and 550°C and exhausts to the condenser at 10 kPa. Steam is extracted from the turbine at 0.8 MPa for the closed feedwater heater and at 0.3 MPa for the open one. The feedwater is heated to the condensation temperature of the extracted steam in the closed feedwater heater. The extracted steam leaves the closed feedwater heater as a saturated liquid, which is subsequently throttled to the open feedwater heater. Show the cycle on a T-s diagram with respect to saturation lines, and determine
(a) The mass flow rate of steam through the boiler for a net power output of 250 MW and
(b) The thermal efficiency of the cycle.
A 380-liter tank contains steam, initially at 300 kPa and 400°C. A valve is opened and steam flows out of the tank at a constant rate of 0.005 kg/s. During this process, a heater keeps the temperature within the tank constant.
Two pounds of saturated water vapor at 400 F are condensed to saturated liquid in a piston-cylinder device. Calculate work done and heat transfer during this process, in Btu. Be sure to draw the process on a p-v diagram.
a polymer component that needs to maintain a stress level above 10 mpa for proper functioning of an assembly is
it is observed that the time for the ball to strike the ground at b is 2.5 s. determine the speed va and angle ua at
a 120 kg satellite has a radius of gyration of 600 mm with respect to the y axis and is symmetrical with respect to the
there is truss that is an upsidown triangle with two twenty degree angles and is hooked up to four members with pin
1 calculate the density of al in gcm3 given that it forms an fcc crystal structure with an atomic radius of 0.143 nm
Describe the kutta condition.
an air compressor is powered by a 2hp motor assume this is all input to the compressor. the inlet pressure and
given steam flowing thru converging insulated nozzle 25cm long with inlet diameter of 5cm. at nozzle enterance t325c
someone has suggested that the air-standard otto cycle is more accurate if the two isentropic processes are replaced
We want to design a parachute. The requirement is that at terminal velocity the rider will have a velocity equal to the maximum velocity the rider would reach jumping to the ground from a 10-ft high roof. The rider weighs 150 lbf. The parachute will ..
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