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Consider a combined gass steam power plant that has a net power output of 450 MW. The pressue ratio of the gas turbine cycle is 14. Air enters the compreeor at 300K and the turbine at 1400K. The combustion gases leaving the gas turbine are used to heat the stream at 8 Mpa to 400C in a heat exchanger. The combustion gases leave the heat exchanger at 460K.
An open feed water heater incorperated with the steam cycle operates at a pressure of 0.6 MPa. The condenser pressure is 20 KPa. Assuming all the comression and expansion processes to be isentropic.
Determine
- The mass flow rate ratio of air to stream
- The required rate of heat input in the combustion chamber
- The thermal efficienct of the combined cycle.
carbon dioxide gas enters a pipe at 3 mpa and 500 k at a rate of 2 kgs. the gas is cooled at constant pressure as it
the waveform from a mechanical vibration is sensed by a velocity-sensitive vibrometer. the oscilloscope trave indicates
calculate the quality of the system to begin with. calculate the amount of liquid water to begin with. calculate the heat transfer during the heating process.
a stack was sampled for 8 minutes. the gas velocity at stack conditions through the sampler was 15.0 ms and the area
a gate is 0.5 m wide and 0.6 m tall and is hinged at the bottom. on one side the gate holds back a 0.5 m deep body of
blood flows from the left ventricle of the heart up through the ascending aorta. this system can be modeled as a
at 100 lbfin2 saturated vapor h2o flows in a pipe. a valve is opened to vent a small amount to the atmosphere. assuming
Two forces are applied to the pipe AB as shown. Knowing that the pipe has inner and outer diameters equal to 35 mm and 42 mm, respectively, determine the normal and shearing stresses at (a) point a, and (b) point b
consider a homogenous spherical radioactive material of radius ro 0.075 m that is generating heat at a constant rate of
a liquid-vapor mixture of 5kg of water with a quality of 0.75 and a pressure of 5bar is expanded in an isobaric process
a ball is projected from point a with a inital speed of v at an angle of 25 degrees above the x-axis. the ramp ab is at
for flow over a circular cylinder as shown below the velocity outside of boundary layer can be estimated to beux 2 ug
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