Question
In: Physics
Consider a Rankine cycle engine. The engine will use 0.46 kilomoles of water vapor (treated as...
Consider a Rankine cycle engine. The engine will use 0.46 kilomoles of water vapor (treated as a diatomic gas) that is initially at 1.5 atm in a 10 m3 vessel. Then, water vapor is compressed isobarically to 1/10th of its original volume. Next, the water vapor is isochorically pressurized to 5 atm. The water is then isobarically expanded to a volume of 4.23 m3. Finally, the water vapor is allowed to adiabatically expand back to its original pressure and volume. (R = 8314 J/kilomole (K); 1 atm = 101325 Pa)
a) Draw the P-V diagram for the Rankine cycle
b) Calculate the work done by the engine for one complete cycle
c) Calculate the heat absorbed by the engine
d) Calculate the efficiency of the heat engine.
e) Compare this efficiency to a Carnot Cycle operating between the two most extreme temperatures achieved by the engine.
Solutions
genius_generous answered 2 years agoRelated Solutions
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3: Consider the Rankine power cycle using vapor and liquid. a: Explain what kinds of problems...
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liquid.
a: Explain what kinds of problems the Carnot Vapor Cycle has.
b: Draw a T-s diagram for the ideal Rankine cycle and label each
process explicitly.
c: There is a method to lower the condenser pressure in order to
improve the efficiency of the ideal Rankine cycle. Explain its
advantages and disadvantages explicitly.
d: Name the gas power cycle which uses the same four processes in
its cycle and draw...
Another type of external combustion steam engine in the Rankine cycle engine. You are told a...
Another type of external combustion steam engine in the Rankine
cycle engine. You are told a Rankine engine will be operated in the
following manner. The engine will use 0.46 kilomoles of water
vapor. The water vapor is initially at 1.5 atm in a 10
m3 vessel. The water vapor is compressed isobarically to
1/10th of its original volume. The water vapor is then
isochorically pressurized to 5 atm. The water is then isobarically
expanded to a volume of 4.23...
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working fluid. The net power of power plant is 220-MW. At the
turbine inlet, steam is at 9 MPa and 560°C. The condenser pressure
is 20 kPa. Determine the following values.
The temperature at the pump inlet.
°CThe specific enthalpy at the pump inlet.
kJ/kgThe specific volume at the pump inlet.
m3/kgThe pump work.
kJ/kgThe temperature at pump exit.
°CThe specific entropy at turbine inlet.
kJ/kg·KThe quality of steam...
Consider a simple ideal Rankine cycle which uses water as the working fluid. The boiler pressure...
Consider a simple ideal Rankine cycle which uses water as the
working fluid. The boiler pressure is 6100 kPa and the condenser
pressure is 30 kPa. At the turbine inlet, steam is at 480°C. The
isentropic efficiency of the turbine is 92 percent. The pump losses
are negligible and the water leaving the condenser is subcooled by
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Determine the following values.
The temperature at the pump inlet....
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[25]
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480 °C, while the condenser pressure is 6 kPa. Steam expands
through the first-stage turbine to
0.7 MPa and then is reheated to 480 °C
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the ideal Rankine cycle, create
two plots: thermal efficiency as a function of the reheat
temperature from 200 °C to
500 °C; and the...
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