Assignment 10, Question 4, Problem Book #202Problem StatementAn ideal Brayton cycle with a two-stage compressor, a two-stage turbine, and a regeneratoroperates with a mass flow rate of 25 kg/s. The regenerator cold inlet is at 490 K and itseffectiveness is 60%. Ambient conditions are 90 kPa and 20°C. The intercooler operates at450 kPa and the reheater operates at 550 kPa. The temperature at the exit of the combustionchamber is 1,400 K. Heat is removed in the intercooler at a rate of 2.5 MW and heat is addedin the reheater at a rate of 10 MW. Determine the thermal efficiency and the back workratio. Use a cold air standard analysis with cp = 1.005 kJ/(kg K) and k = 1.4..Answer TableStageDescriptionYour AnswerCorrectAnswerDue DateGrade(%)1Thermal efficiency (%)Dec 5, 2024 11:59 pm0.01Weight Attempt Action/Message1/5PartTypeSubmit1Back work ratio (%)Dec 5, 2024 11:59 pm0.01* Correct answers will only show after due date has passed.

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Answered: Assignment 10, Question 4, Problem Book…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Required information Problem 09.097 - Modified Brayton Cycle with Two-Step Expansion - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A gas-turbine power plant operates on a modified Brayton cycle shown in the figure with an overall pressure ratio of 8. Air enters the compressor at 0°C and 110 kPa. The maximum cycle temperature is 1500 K. The compressor and the turbines are isentropic. The high-pressure turbine develops just enough power to run the compressor. Assume constant properties for air at 300 K with cy= 0.718 kJ/kg-K, cp=1.005 kJ/kg-K, R= 0.287 kJ/kg-K, and k = 1.4. Combustion chamber Compressor to High-pressure turbine Low-pressure turbine Problem 09.097.c - Net Power Output of Low Pressure Turbine If the net power output is 200 MW, determine the mass flow rate of the air into the compressor in kg/s. The mass flow rate of the air into the compressor is kg/s.
Required information Problem 09.097 - Modified Brayton Cycle with Two-Step Expansion - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A gas-turbine power plant operates on a modified Brayton cycle shown in the figure with an overall pressure ratio of 8. Air enters the compressor at 0°C and 110 kPa. The maximum cycle temperature is 1500 K. The compressor and the turbines are isentropic. The high-pressure turbine develops just enough power to run the compressor. Assume constant properties for air at 300 K with cy= 0.718 kJ/kg-K, cp= 1.005 kJ/kg-K, R= 0.287 kJ/kg-K, and k = 1.4. Combustion chamber Compressor O High-pressure turbine Problem 09.097.b - Temperature and Pressure After High Pressure Turbine The temperature at state 4 is The pressure at state 4 is Determine the temperature and pressure at state 4, the exit of the high-pressure turbine. (You must provide an answer before moving on to the next part.) Low-pressure turbine K. kPa
Problem 3 (activity) A regenerative steam turbine has a throttle pressure of 3.8 MPa at 380°C and a condenser at 0.01 MPa. Steam are extracted at the following points: 2.0 MPa, 1.0 MPa, and at 0.2 MPa. For the ideal cycle, find (a) The amount of steam extracted (b) W, Q, and e. (c) For an ideal engine and the same states, compute (d) W, Q, and e and
Required information Problem 09.097 - Modified Brayton Cycle with Two-Step Expansion - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A gas-turbine power plant operates on a modified Brayton cycle shown in the figure with an overall pressure ratio of 8. Air enters the compressor at 0°C and 110 kPa. The maximum cycle temperature is 1500 K. The compressor and the turbines are isentropic. The high-pressure turbine develops just enough power to run the compressor. Assume constant properties for air at 300 K with cy= 0.718 kJ/kg-K, cp=1.005 kJ/kg-K, R= 0.287 kJ/kg-K, and k = 1.4. Combustion chamber Compressor High-pressure turbine Low-pressure turbine Problem 09.097.a - P-v and T-s Diagrams for Modified Brayton Cycle Sketch the T-s diagram for the cycle. Label the data states. (Please upload your response/solution using the controls provided below.) (You must provide an answer before moving on to the next part.)
Required information The net work output and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Steam enters the turbine in both cases at 10 MPa as a saturated vapor, and the condenser pressure is 50 kPa. In the Rankine cycle, the condenser exit state is saturated liquid and, in the Carnot cycle, the boiler inlet state is saturated liquid. The net work output and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Use steam tables. The net work output in the simple ideal Rankinė cycle is kJ/kg. The thermal efficiency of the simple ideal Rankine cycle is The net work output in the Carnot cycle is kJ/kg. The thermal efficiency of the Carnot cycle is 1%. 1%. S
What are the two benefits of adding a reheater to a Rankine cycle?
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Required information. The net work output and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Steam enters the turbine in both cases at 10 MPa as a saturated vapor, and the condenser pressure is 50 kPa. In the Rankine cycle, the condenser exit state is saturated liquid and, in the Carnot cycle, the boiler inlet state is saturated liquid. Draw the T-s diagrams for both cycles. (Please upload your response/solution using the controls below.) upload a response file (15MB max) Choose File no file selected save
In a reheat cycle steam at 15 Mpa, 540°C enters the engine and expands to 1.95 Mpa. At this point the steam is withdrawn and passed through a reheater. It reenters the engine at 540°C. Expansion now occurs to the condenser pressure of 0.0035 Mpa. (a) For the ideal cycle, find ee (b) A 60,000 kW turbine operates between the same state points except that the steam enters the reheater at 1.95Mpa and 260°C, departs at 1.8 Mpa and 540°C. The steam flow is 147,000 kg/hr; generator efficiency is 96%. For actual engine, ek, mk, and nk, (c) Determine the approximate enthalpy of the exhaust steam if the heat lost through the turbine casing is 2% of the combined work.4. Steam at 200 bar, 760°C enters the thrott
A gas-turbine power plant operating on an ideal Brayton cycle has a pressure ratio of(10.2). Air enters the compressor at 100 kPa, 300 K, with a volumetric flow rate of11 m3/s. The turbine inlet temperature is 1460 K.Universal gas constant (R) = 8.314 J K-1 mol-1, molar mass of air (M) = 28.97 g mol-11. Show the plant layout of the gas turbine and explain the principle of operation of thesystem. Clearly indicate the energy exchanges that take place.Neglecting all pressure losses, changes in kinetic energy determine;2. the thermal efficiency of the cycle3. the back work ratio4. the net power developed, in kW.5. Suppose in actual situation, the compressor has isentropic efficiency of 75 percent andthe turbine has isentropic efficiency of 80 percent because of irreversibilities present.Compare and evaluate the actual plant and theoretical efficiencies accounting for anydiscrepancies found.
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