Homework Answers
From subcooled steam table at T=210 C and P=9.3 MPa : Before entering the boiler
h1 = 900.16 kJ/kg
From superheated steam table at T=500 C and P=8.7 MPa : After boiler
h2 = 3390.95 kJ/kg
Heat added = m(h2-h1) = 320000/3600 * ( 3390.95 - 900.16) = 221403.55 kW
Work output = 80000 kW
Efficiency = E = W/Q = 80000/221403.55 = 0.3613
E = 36.13 % : ANSWER
Add Answer to:
Determine the cycle Efficiency: 8.7 MPa 500°C 320,000 kg/h Boiler 80,000 kW High-pressure turbine Low-pressure turbine...
Determine the cycle Efficiency: 8.7 MPa 500°C 320,000 kg/h Boiler 80,000 kW High-pressure turbine Low-pressure turbine...
Determine the cycle Efficiency: 8.7 MPa 500°C 320,000 kg/h Boiler 80,000 kW High-pressure turbine Low-pressure turbine Generator Condenser 5 kPa 0.9 MPa 28.000 kg/h 2.3 MPa 28.000 kg/h 227,000 kg/h Condensate pump High pressure heater Intermediate- Deaerating open feed water heater Boiler feed Low pressure heater pump pressure heater Trap Arrangement of heaters in an Trap Booster Trap pump actual power plant utilizing regenerative FWHs 210°C 330 kPa 12.000 kg/h 75КРа
Determine the cycle Efficiency: 8.7 MPa 500°C 320,000 kg/h...
Water is the working fluid in an ideal regenerative Rankine cycle with one open feed water heater, Figure 2. Upstream of the high pressure turbine superheated vapour with a mass flow rate of 90 kg/s...
Water is the working fluid in an ideal regenerative Rankine cycle with one open feed water heater, Figure 2. Upstream of the high pressure turbine superheated vapour with a mass flow rate of 90 kg/s entres the first-stage turbine at a pressure of 14 MPa Each turbine stage has an isentropic efficiency of 90%. The temperature of the inlet vapour is 520°C. The steam expands through the first-stage turbine to a pressure of 0.9MPa where some of the steam is...
P8-29 A closed feedwater heater is used in a Rankine cycle Steam leaves the boiler at...
P8-29 A closed feedwater heater is used in a Rankine cycle Steam leaves the boiler at 20 MPa, 600°C. Between the high and low-pressure turbines, steam at 1 MPa is extracted and delivered to the closed feedwater heater. Feedwater exits the feedwater heater at 20 MPa and the saturation temperature of the 1-MPa steam; saturated liquid condensate is fed through a steam trap back to the condenser. Steam from the second- stage turbine enters the condenser at 10 kPa, and...
1. A thermoelectric steam generation plant operates on a Rankine cycle with reheating and two boiler...
1. A thermoelectric steam generation plant operates on a Rankine cycle with reheating and two boiler feed water heaters, one open and one closed. Steam enters the high pressure turbine at P8 and 500 ° C and the low pressure turbine at P10 and 500 ° C. The condenser pressure is 40 kPa. Steam is drawn from the turbine at a pressure P11 for the closed feed water heater and at a pressure P12 for the open feed water heater....
3) For the regenerative cycle shown in the figure determine per kg of steam: a. Draw...
3) For the regenerative cycle shown in the figure determine per kg of steam: a. Draw T-s diagram showing the cycle points b. The mass flux of steam extracted from the turbine c. The cycle thermal efficiency Boiler 10 MPa 600 °C Turbine Turbine € 20 MW - 20 MW 1000 kPa Closed focdwater heater 10 kPa a Condenser Condensate pump
Consider a reheat-regenerative vapor power cycle with two feedwater heaters, a closed feedwater heater and an...
Consider a reheat-regenerative vapor power cycle with two feedwater heaters, a closed feedwater heater and an open feedwater heater. Steam enters the first turbine at 8.0 MPa, 500°C and expands to 0.8 MPa. The steam is reheated to 500°C before entering the second turbine, where it expands to the condenser pressure of 10 kPa. Steam is extracted from the first turbine at 2 MPa and fed to the closed feedwater heater. Feedwater leaves the closed heater at 200°C and 8.0...
Consider a modern extra-supercritical pressure steam power plant that operates Rankine cycle with one open feedwater...
Consider a modern extra-supercritical pressure steam power plant that operates Rankine cycle with one open feedwater heater, one closed feedwater heater, and one reheater, as shown below. Steam enters the high-pressure turbine at 32 MPa and 700 °C and is condensed in the condenser at a pressure of 10 kPa. Steam exits the high-pressure turbine at 4 MPa and is routed into a reheater (inside the boiler) to be reheated to 640 °C. Steam at P-8 MPa is extracted from...
A steam power plant operates on an ideal Rankine cycle with two of its feedwater heater...
A steam power plant operates on an ideal Rankine cycle with two
of its feedwater heater closed as shown in the figure below and
with a net power output of 105MW. The mass flow rate of the steam
is 70kg/s and enters the high-pressure turbine at 6MPa and
and leaves at 1.5 Mpa. a fraction of x of steam is extracted at
this pressure to the closed feedwater. a fraction of y of steam is
extracted from the second stage...
PROBLEM 1. Consider a Rankine cycle, where steam enters the turbine @ 5 Mpa, 500 *C...
PROBLEM 1. Consider a Rankine cycle, where steam enters the turbine @ 5 Mpa, 500 *C and excits at 12.35 kPa. The cycle produce 10,000 KW of electricity. Determine the cycle efficiency and the steam amount needed. PROBLEM 2. For the figure below, find the cycle efficiency given the following: Consider 1 kg flowing The pressure at point 1, 5 and 6 are 10 kPa, 3000 kPa, and 1000 kPa. The temperature at point 5 is 350 °C. The steam...
8.55 ULUS 8.53. but include in the s an isentropic efficiency 8.54 Reconsider the cycle o...
8.55
ULUS 8.53. but include in the s an isentropic efficiency 8.54 Reconsider the cycle o f lem 852 L analysis that each turbine e has an isentre of 88% and each pump an siciency of 80%. unkine cycle of Problem 8.9 to include r heater using extracted steam extracted steam at exiting the heater as saturated liquid ough a trap into the condenser. The neater at 11 MPa and a temperature temperature at 690 kPa. The mass ring the...
Determine the cycle Efficiency: 8.7 MPa 500°C 320,000 kg/h Boiler 80,000 kW High-pressure turbine Low-pressure turbine Generator Condenser 5 kPa 0.9 MPa 28.000 kg/h 2.3 MPa 28.000 kg/h 227,000 kg/h Condensate pump High pressure heater Intermediate- Deaerating open feed water heater Boiler feed Low pressure heater pump pressure heater Trap Arrangement of heaters in an Trap Booster Trap pump actual power plant utilizing regenerative FWHs 210°C 330 kPa 12.000 kg/h 75КРа
Determine the cycle Efficiency: 8.7 MPa 500°C 320,000 kg/h...
Water is the working fluid in an ideal regenerative Rankine cycle with one open feed water heater, Figure 2. Upstream of the high pressure turbine superheated vapour with a mass flow rate of 90 kg/s entres the first-stage turbine at a pressure of 14 MPa Each turbine stage has an isentropic efficiency of 90%. The temperature of the inlet vapour is 520°C. The steam expands through the first-stage turbine to a pressure of 0.9MPa where some of the steam is...
P8-29 A closed feedwater heater is used in a Rankine cycle Steam leaves the boiler at 20 MPa, 600°C. Between the high and low-pressure turbines, steam at 1 MPa is extracted and delivered to the closed feedwater heater. Feedwater exits the feedwater heater at 20 MPa and the saturation temperature of the 1-MPa steam; saturated liquid condensate is fed through a steam trap back to the condenser. Steam from the second- stage turbine enters the condenser at 10 kPa, and...
3) For the regenerative cycle shown in the figure determine per kg of steam: a. Draw T-s diagram showing the cycle points b. The mass flux of steam extracted from the turbine c. The cycle thermal efficiency Boiler 10 MPa 600 °C Turbine Turbine € 20 MW - 20 MW 1000 kPa Closed focdwater heater 10 kPa a Condenser Condensate pump
Consider a reheat-regenerative vapor power cycle with two feedwater heaters, a closed feedwater heater and an open feedwater heater. Steam enters the first turbine at 8.0 MPa, 500°C and expands to 0.8 MPa. The steam is reheated to 500°C before entering the second turbine, where it expands to the condenser pressure of 10 kPa. Steam is extracted from the first turbine at 2 MPa and fed to the closed feedwater heater. Feedwater leaves the closed heater at 200°C and 8.0...
Consider a modern extra-supercritical pressure steam power plant that operates Rankine cycle with one open feedwater heater, one closed feedwater heater, and one reheater, as shown below. Steam enters the high-pressure turbine at 32 MPa and 700 °C and is condensed in the condenser at a pressure of 10 kPa. Steam exits the high-pressure turbine at 4 MPa and is routed into a reheater (inside the boiler) to be reheated to 640 °C. Steam at P-8 MPa is extracted from...
A steam power plant operates on an ideal Rankine cycle with two
of its feedwater heater closed as shown in the figure below and
with a net power output of 105MW. The mass flow rate of the steam
is 70kg/s and enters the high-pressure turbine at 6MPa and
and leaves at 1.5 Mpa. a fraction of x of steam is extracted at
this pressure to the closed feedwater. a fraction of y of steam is
extracted from the second stage...
PROBLEM 1. Consider a Rankine cycle, where steam enters the turbine @ 5 Mpa, 500 *C and excits at 12.35 kPa. The cycle produce 10,000 KW of electricity. Determine the cycle efficiency and the steam amount needed. PROBLEM 2. For the figure below, find the cycle efficiency given the following: Consider 1 kg flowing The pressure at point 1, 5 and 6 are 10 kPa, 3000 kPa, and 1000 kPa. The temperature at point 5 is 350 °C. The steam...
8.55
ULUS 8.53. but include in the s an isentropic efficiency 8.54 Reconsider the cycle o f lem 852 L analysis that each turbine e has an isentre of 88% and each pump an siciency of 80%. unkine cycle of Problem 8.9 to include r heater using extracted steam extracted steam at exiting the heater as saturated liquid ough a trap into the condenser. The neater at 11 MPa and a temperature temperature at 690 kPa. The mass ring the...
Most questions answered within 3 hours.
-
When a firm is in an increasing-cost industry, a decrease in
demand will result in economic (Click...
asked 1 minute ago -
1. Explain what the advantages are of having a System on a Chip
rather than separate...
asked 31 seconds ago -
A turbine is spinning freely at 3750 rpm. It takes 10 min to
coast to a...
asked 4 minutes ago -
home / study / business / operations management / operations
management questions and answers / eastman...
asked 7 minutes ago -
Q1. In a DC machine, if the field winding is replaced by
permanent magnets, can the...
asked 8 minutes ago -
a.) How is a monopolistic firm different from a perfectly
competitive firm? Which firm will have...
asked 27 minutes ago -
The following reagents are available:
Reagent 1: pKa = 5
Reagent 2: pKa = 6.75
Reagent...
asked 26 minutes ago -
A company has entered into a business agreement with a business
partner for managed human resources...
asked 45 minutes ago -
You have been asked to develop a new line of organic skincare
products. Spend time with...
asked 1 hour ago -
Summerdahl Resort's common stock is currently trading at $37 a
share. The stock is expected to...
asked 1 hour ago -
To an economist, the field of industrial organization answers
which of the following questions?
asked 1 hour ago -
How could meeting industry expectations, propel managers into
challenging and possible conflict of interest situations? How...
asked 2 hours ago