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A cogeneration plant is to generate power and 8600 kJ/s of process heat. Consider an ideal cogeneration steam plant. Steam enters the turbine from the boiler at 7 MPa and 500°C. One-fourth of the steam is extracted from the turbine at 600-kPa pressure for process heating. The remainder of the steam continues to expand and exhausts to the condenser at 10 kPa. The steam extracted for the process heater is condensed in the heater and mixed with the feedwater at 600 kPa. The mixture is pumped to the boiler pressure of 7 MPa. Show the cycle on a T-s diagram with respect to saturation lines, and determine
(a) The mass flow rate of steam that must be supplied by the boiler,
(b) The net power produced by the plant, and
(c) The utilization factor.
a police car traveling at 101.7 kmh is traveling west chasing a motorist traveling at 77.0 kmh.a what is the velocity
Given water h=3227 KJ/Kg Temperature 400C Find specific volume, pressure, and specific internal energy. Given R-134a T=15F quality x =0.6 Find pressure, specific volume, specific enthalpy. Given Water P=4Mpa U=3000 KJ/Kg Find Temperature, and specifi..
an inventor claims to have developed a device that takes an air stream at 20degc 274 kpa and produces two separate
If it is possible to do so without additional information, calculate the percent excess air supplied to the furnace: if more information is needed, state what it is and outline the calculation of the percent excess air.
a 10 lb bag is pushed off a and swings in a verticle plane and the end of rope l5. calculate and plot the swing of the
As shown in the picture, air flows through a pipe. Heat is supplied to the airflow. The air at the inlet is 200kPa and 20 C with flow velocity of 5m/s. The exiting air is 180 kPa and 40 °C. The diameter of the pipe is 0.28 m. Determine (a) the volume..
A solid round steel shaft, having an outside dameter of 2.002 in., is press or force fitted into the 2.000 in, hole in a gear. The force required to press the two machine parts together is 18,000 lb. What is the diameter of the solid steel shaft duri..
for a short time the 250 kg roller coaster car is traveling along the spiral track such that its position measured from
a new cast iron pipe is 5 km long and 15 mm diameter is used to convey water at a rate of 0.0150m3s-1. given the
If the petrol engine used in this experiment at a full throttle setting (throttle valve fully open) consumes 20ml of fuel in 2 mins and 15 sec, what is the mass flow rate of fuel? How much power has been input to the system?
determine in a steady state heat transfer through a 2.4in thick homogenous trapezodial flap with its faces maintained
a rigid tank with a volume of 25 m3 contain 15 kg of saturated liquid-vapor mixture of water at 75 ordm c. now the
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