Q2: 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 a closed 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. determine (a) the mass flow rate of steam through the boiler and (b) the thermal efficiency of the cycle. Turbine Boiler 10 MP 10 1-y 0.8 MPa 3. 1-y 6. Closed fwh 4. to Mixing chamber Condenser 10 kPa 10 PII PI

Q2: 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 a closed 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. determine (a) the mass flow rate of steam through the boiler and (b) the thermal efficiency of the cycle. Turbine Boiler 10 MP 10 1-y 0.8 MPa 3. 1-y 6. Closed fwh 4. to Mixing chamber Condenser 10 kPa 10 PII PI

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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This is an Open feedwater not a closed feedwater thank you
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.
Q4: Consider a steam power plant that operates on an ideal reheat- regenerative Rankine cycle with one open feedwater heater, one closed feedwater heater, and one reheater. Steam enters the turbine at 15 MPa and 600°C and is condensed in the condenser at a pressure of 10 kPa. Some steam is extracted from the turbine at 4 MPa for the closed feedwater heater, and the remaining steam is reheated at the same pressure to 600°C. The extracted steam is completely condensed in the heater and is pumped to 15 MPa before it mixes with the feedwater at the same pressure. Steam for the open feedwater heater is extracted from the low-pressure turbine at a pressure of 0.5 MPa. Determine the fractions of steam extracted from the turbine as well as the thermal efficiency of the cycle. 1 kg 15 MPa 600°C Boiler 15 MPa 4 MPa 0.5 MPa 10 kPa Mixing chamber (0) Reheater Closed FWH www Pump III 4 MPa High-P turbine 10 P₁0 P₁1=4 MPa 600°C 2 12 1-y (11) 0.5 MPa Open FWH Low-P turbine Pump II Pump I 1-y-z 13 10…
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
Please show the solution. Thank you very mmuch
1) In an ideal regenerative Rankine cycle, vapor enters the turbine at 7MPa and 550°C. Steam first expands to 0.8MPa where some of the steam is extracted and transferred to an open feedwater heater (FWH) operating at 0.8MPa. The remaining steam expands through the second-stage turbine to the condenser pressure of 10kPa. Saturated liquid exits the open FWH at 0.8MPa and water enters pump I as a saturated liquid. Determine a) the power output of the cycle in kJ/kg b) the thermal efficiency of the cycle c) the heat transfer from the condenser to the environment, in kJ/kg. Boiler Pump II Open FWH Pump 1 Turbine Condenser
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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.
Consider an ideal steam regenerative Rankine cycle with two feedwater heaters, one closed and one open. Steam enters the turbine at 10 MPa and 500 C and exhausts to the condenser at 10 kPa. Steam is extracted from the turbine at 0.7 MPa for the closed feedwater heater and 0.3 MPa for the open one. The extracted steam leaves the closed feedwater heater and is subsequently throttled to the open feedwater heater. Show the cycle on a T-s diagram with respect to saturation lines, and using only the data presented in the data tables given below determine a) the fraction for steam leaving the boiler that is extracted at 0.3 MPa z=0.1425 b) the fraction of steam leaving the boiler that is extracted at 0.7 MPa y=0.06213 c) the heat transfer from the condenser per unit mass leaving the boiler q_out=1509 kJ/kg d) the heat transfer to the boiler per unit mass leaving the boiler qin=2677 kJ/kg e) the mass flow rate of steam through the boiler for a net power output of 250 MW m'=214.1 kg/s f) the…