Question
In: Mechanical Engineering
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)
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Expert Solution
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samet mamat answered 2 years agoRelated Solutions
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...
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...
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...
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...
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,...
Consider a steam power plant operating on the ideal reheat Rankine cycle. Steam enters the high-pressure...
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, determine:
(a) the pressure at...
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?
Question 2: In a steam power plant operating according to the ideal intermediate superheated Rankine cycle,...
Question 2: In a steam power plant operating
according to the ideal intermediate superheated Rankine cycle,
water vapor enters the high pressure turbine at 8 MPa pressure and
500 oC temperature and expands to 3 MPa pressure. Then,
the steam is re-heated to a temperature of 500 oC in the
boiler and expands to 20 kPa condenser pressure in the low pressure
turbine.
I. Show the cycle in the T-s diagram and explain for what
purpose intermediate superheating is done....
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.) What is the thermal efficiency of a steam power plant operating on the Rankine cycle...
a.) What is the thermal efficiency of a steam power plant
operating on the Rankine cycle if saturated steam is supplied to
the turbine at 1000 psia, and the condenser is at 1 psia. Use a
turbine efficiency of 95% and a pump efficiency of 85%. Refer to
Chapter 9, Sections 10-11, as necessary.
b.) Determine the thermal efficiency if the steam is superheated to
1000 F, assuming all else equal.
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