EXAMPLE 4-5 A steam power plant operates on an ideal reheat- regenerative Rankine cycle and has a net power output of 80 MW. Steam enters the high- pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to 500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the mass flow rate of steam through the boiler and (b) the thermal efficiency of the cycle.

EXAMPLE 4-5 A steam power plant operates on an ideal reheat- regenerative Rankine cycle and has a net power output of 80 MW. Steam enters the high- pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to 500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the mass flow rate of steam through the boiler and (b) the thermal efficiency of the cycle.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

EXAMPLE 4-5 A steam power plant operates on an ideal reheat- regenerative
Rankine cycle and has a net power output of 80 MW. Steam enters the high-
pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is
extracted at this pressure to heat the feedwater in an open feedwater heater. The
rest of the steam is reheated to 500°C and is expanded in the low-pressure turbine
to the condenser pressure of 10 kPa. Show the cycle on a T-s diagram with respect
to saturation lines, and determine (a) the mass flow rate of steam through the boiler
and (b) the thermal efficiency of the cycle.

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This is an Open feedwater not a closed feedwater thank you
pls ans fast
A steady-state system for producing power consist of a pump, heat exchanger and a turbine. Watersteam power plant operates on an ideal reheat– regenerative Rankine cycle. Steam enters the highpressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at thispressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Determinethe entropy generation associated with the reheating and regeneration processes. Assume a sourcetemperature of 1800 K. please i so another solution for this qustion and they didn't do any calculation for state 4 can i know why?
A steam power plant operates on an ideal regenerative Rankine cycle. Steam enters the turbineat 6 MPa and 450 o C and is condensed in the condenser at 20 kPa. Steam is extracted from theturbine at 0.6 MPa to heat the feedwater in an open feedwater heater. Water leaves thefeedwater heater as a saturated liquid. The mass flow rate of steam through the boiler is 6 kg/s. Show the cycle on a T-s diagram and determine (a) thenet work per kilogram of steam flowing through the boiler and (b) the thermal efficiency of thecycle. (c) The quality of steam leaving the turbine (d) The fraction of steam extracted from the turbine
A steady-state system for producing power consist of a pump, heat exchanger and a turbine. Watersteam power plant operates on an ideal reheat– regenerative Rankine cycle. Steam enters the highpressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at thispressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Determinethe entropy generation associated with the reheating and regeneration processes. Assume a sourcetemperature of 1800 K. Please Solve step by step.
Scenario (1) The first steam power plant operates on an ideal reheat Rankine cycle. Steam enters the first turbine at 8 MPa and 500 C and leaves at 3 MPa. Steam is then reheated at a constant pressure to 500 C before it expands to 20 kPa in the low-pressure turbine. Assuming that heat is being added to the boiler from a high temperature source at 1800 K and the condenser is transferring heat to a temperature sink at 300 K. Task 1 Investigate the effect of changing pump efficiency on the overall thermal efficiency of the thermodynamics cycle (Hint: You will assume different values for the isentropic pump efficiency such as: 70%, 80%, 90%, 95%, and 100%, then observe how it will change the thermal efficiency of the cycle). Representing the results in a plot is recommended.
Scenario (1) The first steam power plant operates on an ideal reheat Rankine cycle. Steam enters the first turbine at 8 MPa and 500 C and leaves at 3 MPa. Steam is then reheated at a constant pressure to 500 C before it expands to 20 kPa in the low-pressure turbine. Assuming that heat is being added to the boiler from a high temperature source at 1800 K and the condenser is transferring heat to a temperature sink at 300 K. Task 1 Investigate the effect of changing turbine efficiency on the overall thermal efficiency of the thermodynamic cycle. (Hint: You will assume different values for the isentropic turbine efficiency such as: 70%, 80%, 90%, 95%, and 100%, then observe how it will change the thermal efficiency of the cycle). Representing the results in a plot is recommended.
Applied Thermo
Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider a steam power plant that operates on a reheat Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 500°C and the low-pressure turbine at 1 MPa and 500°C. Steam leaves the condenser as a saturated liquid at a pressure of 10 kPa. The isentropic efficiency of the turbine is 72 percent and that of the pump is 95 percent. Determine the quality (or temperature, if superheated) of the steam at the turbine exit. Use steam tables. (You must provide an answer before moving on to the next part.) The temperature of the steam at the turbine exit is °C.