Question
In: Mechanical Engineering
Design a steam power plant that works as an ideal Regenerative Rankine cycle with 2 closed...
Design a steam power plant that works as an ideal Regenerative Rankine cycle with 2 closed feedwater heaters cascaded backwards by selecting their extraction pressures to optimize cycle efficiency. The available steam conditions at the exit of the boiler are 3 MPa and 590 °C and the condenser pressure is 20 kPa. The steam flow rate at the inlet of the turbine is 80 kg/s. A T-s diagram for the cycle should be provided along with a table showing the pressure, temperature, enthalpy and entropy of all the states at the optimized point. Also, mention the net power output and rate of heat rejected from the cycle as well as the fractions of the working fluid extracted for each feedwater heaters at the design point.
Solutions
samet mamat answered 3 years agoRelated Solutions
A steam power plant operates on an ideal regenerative Rankine cycle. Steam enters the turbine at...
A steam power plant operates on an ideal regenerative Rankine
cycle. Steam enters the turbine at 6 MPa and 450oC and is condensed
in the condenser at 20 kPa. Steam is extracted from the turbine at
0.4 MPa to heat the feedwater in an open feedwater heater. Water
leaves the feedwater heater as a saturated liquid. Show the cycle
on a T-s diagram and determine the fraction of steam extracted from
the turbine for the open feedwater heater.
A steam power plant operates on a regenerative Rankine cycle with two feedwater heaters, one closed...
A steam power plant operates on a regenerative Rankine
cycle with two feedwater heaters, one closed and one open. Steam
enters the turbine at 12.5 MPa and 550ºC and exhausts to the
condenser at 10 kPa. Steam is extracted from the turbine at 1 MPa
for the closed feedwater heater and 0.8 MPa for the open one. The
feedwater is heated to the condensation temperature of the
extracted steam in the closed feedwater heater. The extracted steam
leaves the closed...
A steam power plant operates on a regenerative Rankine cycle. Steam enters the turbine at 6...
A steam power plant operates on a regenerative Rankine cycle.
Steam enters the turbine at 6 MPa at 700 ºC and the condenser at 10
kPa. Turbine has isentropic efficiency of 85% and pumps have
isentropic efficiency of 90%. Steam is extracted from the turbine
at 0.6 MPa to heat the feedwater in an open feedwater heater. Water
leaves the open feedwater heater as saturated liquid.
a) Draw the system with labels and show the ideal and the
non-ideal cycle...
Design a gas power plant that works as a non-ideal Regenerative Brayton cycle by determining the...
Design a gas power plant that works as a non-ideal Regenerative
Brayton cycle by determining the pressure ratio required to
optimize the net power output of the cycle. The minimum cycle
temperature is 300 K while the maximum cycle temperature is 1780 K.
The isentropic efficiency of the turbine is 85% while that of the
compressor is 75%. The effectiveness of the regenerator is to be
taken as 0.8 while the gas flow rate is 30 kg/s. A T-s diagram...
A proposed steam power plant design consists of an ideal Rankine cycle with reheat and regeneration....
A proposed steam power plant design consists of an ideal Rankine
cycle with reheat and regeneration. Steam enters Turbine 1 at P1
and T1 at the rate of m1 and exits at P2. A fraction (y') of the
steam exiting Turbine 1 is diverted to an open feedwater heater
while the remainder is reheated to T3 before entering Turbine 2.
The condenser operates at P4. Saturated liquid exits the condenser
and is fed to Pump 1. The outlet of Pump...
Consider a steam power plant that operates on a regenerative Rankine cycle and has a net...
Consider a steam power plant that operates on a regenerative
Rankine cycle and has a net power output of 150 MW. Steam enters
the turbine at 10 MPa and 500°C and the condenser at 10 kPa. The
isentropic efficiency of the turbine is 80 percent, and that of the
pumps is 95 percent. Steam is extracted from the turbine at 0.5 MPa
to heat the feedwater in an open feedwater heater. Water leaves the
feedwater heater as a saturated liquid....
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 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?
Ideal Reheat Steam Cycle (10) Consider a steam power plant operating on the ideal reheat Rankine...
Ideal Reheat Steam Cycle (10)
Consider a steam power plant operating on the ideal
reheat Rankine cycle. Steam enters the high-pressure turbine at PH
MPa and TH °C and is condensed in the condenser at a pressure of PL
kPa. Assume the steam is reheated to the inlet temperature of the
high-pressure turbine, and that pump work is NOT negligible. If the
moisture content of the steam at the exit of the low-pressure
turbine is not to exceed w% percent,...
Ideal Reheat Steam Cycle (10) Consider a steam power plant operating on the ideal reheat Rankine...
Ideal Reheat Steam Cycle (10)
Consider a steam power plant operating on the ideal reheat
Rankine cycle. Steam enters the high-pressure turbine at
PH MPa and
TH °C and is condensed in the
condenser at a pressure of PL
kPa. Assume the steam is reheated to the inlet
temperature of the high-pressure turbine, and that pump work is NOT
negligible. If the moisture content of the steam at the exit of the
low-pressure turbine is not to exceed
w% percent,...
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