Question
In: Physics
how can the second law efficiency of a simple ideal rankine cycle can be improved
how can the second law efficiency of a simple ideal rankine cycle can be improved
Solutions
genius_generous answered 2 years agoRelated Solutions
1. The thermal efficiency of a Rankine power cycle may be improved by i. Superheating the...
1. The thermal efficiency of a Rankine power cycle may be
improved by i. Superheating the steam ii. Reheating the steam
between high and lower pressure sections of the turbine iii.
Regenerative Feedwater Heating iv. Insulating the turbine and
decreasing the entropy production during the expansion process v.
Incorporating a Rankine cycle power system as part of a
cogeneration system a. Items i), ii), and iv) only b. Items i),
iii), and v) only c. Items ii), iv) and v)...
1. The thermal efficiency of a Rankine power cycle may be improved by i. Superheating the...
1. The thermal efficiency of a Rankine power cycle may be
improved by i. Superheating the steam ii. Reheating the steam
between high and lower pressure sections of the turbine iii.
Regenerative Feedwater Heating iv. Insulating the turbine and
decreasing the entropy production during the expansion process v.
Incorporating a Rankine cycle power system as part of a
cogeneration system a. Items i), ii), and iv) only b. Items i),
iii), and v) only c. Items ii), iv) and v)...
Consider a steam power plant operating on a simple ideal Rankine cycle in which the steam...
Consider a steam power plant operating on a simple ideal Rankine
cycle in which the steam enters the turbine at 3 MPa and 350C and
is condensed in the condenser at 75 kPa. Determine the thermal
efficiency of this cycle and sketch an appropriately labeled T-s
diagram. Also compare this thermal efficiency to that a Carnot heat
engine operating between these same two limits.
The change in enthalpy across the pump = work done by the pump:
h2-h1= v1(P2– P1)
A simple ideal Rankine cycle with water as the working fluid operates between the pressure limits...
A simple ideal Rankine cycle with water as the working fluid
operates between the pressure limits of 4 MPa in the boiler and 5
kPa in the condenser and a turbine inlet temperature of 700°C. The
boiler is sized to provide a steam flow of 50 kg/s. Determine the
power produced by the turbine and consumed by the pump. Use steam
tables.
Find the values of power produced by the
turbine and consumed by the pump in
kW
A steam power plant operates on the simple ideal rankine cycle. the steam enters the turbine...
A
steam power plant operates on the simple ideal rankine cycle. the
steam enters the turbine at 4 MPa and 500 C and leaves it at 50 kPa
and 150 C. the water leaves the condenser as a saturated liquid and
is subsequently displaced to the boiler by means of a pump at a
temperature of 85 C, which is the isentrophic efficiency of the
turbine?
The net power of a steam power plant operating according to the simple ideal Rankine cycle...
The net power of a steam power plant operating according to the
simple ideal Rankine cycle is 30.5 MW. Water vapor enters the
turbine at 7 MPa pressure and 500 ° C, expands to 10 kPa condenser
pressure in the turbine. The steam is condensed in the condenser by
cooling it with water from a lake. The flow rate of the lake water
is 1950 kg / h. Get the pump and turbine adiabatic efficiency of
87%. Show the cycle...
Consider a steam power plant operating on a simple ideal Rankine cycle and having a net...
Consider a steam power plant operating on a simple ideal
Rankine cycle and having a net power output of 57 MW. The steam
enters the turbine at 9 MPa and 575 ° C and exits at 150 ° C, then
it is cooled in the condenser to a pressure of 100 kPa by means of
the cooling water from a lake and that circulates through the
condenser tubes to a rate of 1370 kg / s. Consider leaving the pump...
Consider a simple ideal Rankine cycle which uses water as the working fluid. The net power...
Consider a simple ideal Rankine cycle which uses water as the
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
6.3°C. The boiler is sized for a mass flow rate of 20 kg/s.
Determine the following values.
The temperature at the pump inlet....
Consider a steam power plant operating on the simple ideal Rankine cycle. Steam enters the turbine...
Consider a steam power plant operating on the simple ideal
Rankine cycle. Steam enters the turbine at 15 MPa and 600°C. The
steam condenses in the condenser at 10 kPa. Use the EES software to
study the effects of the following cases on the cycle performance
and to sketch the T-s diagram for each case:
Plot the variation of the cycle thermal efficiency with the
turbine isentropic efficiency. Take the isentropic efficiency of
the turbine in the range 70% to...
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