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A single-stage ideal regenerative steam cycle has a boiler pressure and temperature of 5000 kPa and 500 C, and a condensing pressure of 10 kPa. The extraction pressure is 500 kPa. If the regenerative heater is a closed heater with the condensate pumped into the line following the heater (TTD=7 C), find:
(i) the net work, in kJ/kg,
(ii) the work ratio
(iii) the thermal efficiency
a motorcycle moves with a constant speed of v25 ms around a curved track radius r 800m. what is the magnitude and the
The die characteristic is Q_x = 0.0015p where p is the head pressure in psi. Determine the flight angle that maximizes the flow rate Q_x and graph it.
at the beginning of the compression stroke the volume of a certain diesel engine cylinder is 1 liter and it is filled
consider a hollow steel sphere of inside radius r110 cm and outside radius of r220 cm. the thermal conductivity of the
A new vehicle propulsion scheme calls for the use of liquid nitrogen as "fuel". The details of the power cycle are basically liquid nitrogen is heated in contact with the atmosphere, pressurised and expanded through a turbine) .
a ship travels 40km. on course of 17 degree south of east and then travels 90km. on course 50degree west of south. find
Steam enters an adiabatic turbine steadily at 4.5 MPa and 450°C at a rate of 10 kg/s and exits at 450 kPa and 150°C. If the environment is at 100 kPa and 25°C, calculate the exergy of the steam at the inlet and the exit conditions.
the length of the assembly shown decreases by 0.40mm when an axial force is applied by means of rigid end plates.
the air with constant properties in a steady adiabatic flow enters a system at a pressure of 10 bars and 500 k with a
5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1 where the specific
a baloon rises with a constant velocity.a load is tied by a rope to the basket. when the baloon is at altitude h0 the
in a pem fuel cell there are catalyst particles dispersed in the catalyst layer cl to increase the electrochemically
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