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Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45 MW. Steam enters the turbine at 7 MPa and 500 °C and is cooled in the condenser at a pressure of 10 kPa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/sec
a)What is the work input requirement for the pump? b)What is the heat transfer per unit mass in the boiler?
c)What is the quality at the exit of turbine?
d)What is the work output from the turbine?
e)What is the thermal efficiency?
f)What is the mass flow rate through the cycle?
g)What is the temperature rise of the cooling water from the lake?
a piston held by a pin in an insulated cylinder shown in figure above right contains 2 kg water at 100c quality 98. the
air is compressed in a piston-cylinder device from 90 kpa and 20 degrees c to 400 kpa in a reversible isothermal
100 kg of liquid water at 25C and 50 kg of ice at 0C are placed in an isolated container. (a) (b) (c) Find the initial volume of the liquid-ice mixture, in m3. Determine the volume after all the ice is melted, in m3. Will the temperature of the li..
Gravitational forces pull the two stars together. What is the speed of each star at the moment of impact?
xerted on the shaft shown in the figure, which rotates at 1150 rev/min and supports a 10-kip bending force. Use a 1095 HR steel. Specify a diameter d using a design factor of nd = 1.6 for a life of 3 min. The surfaces are machined.
a stream of methanol vapor is used to chill a countercurrently flowing saturated steam in an adiabatic heat exchanger.
a plane wall with surface temperature 350c is attached with straight rectangular fins k 235 wm k. the fins are exposed
explain how multiple depths can be produced by chemical machining also mention the relationship between width and depth
atmospheric air at 95 kpa 30 degrees celcius and 75 humidity is to be conditioned at constant pressure so that it
air flows through an adiabatic internally reversible compressor at a rate of 0.04 kgs. at the inlet thepressure is 200
Calculate the change in internal energy of the gas. Remember it is an ideal gas in a constant temperature bath.
a 2-kg sphere a is moving toward the right at 4 ms when it strikes the end of a 5 kg slender bar b. the coefficient of
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