Consider a regenerative Brayton cycle operating with a pressure ratioof 8, where the air enters the compressor at 300 K and 100 kPa, whileit enters the turbine at 1060 K. Assume that both the compressor andturbine are isentropic, that specific heats vary with temperature, andthat the regenerator has an effectiveness of 74%. Round allintermediate calculations to three decimal places. What is the enthalpyat the compressor outlet in kJ/kg? What is the enthalpy at the turbineoutlet in kJ/kg? What is the enthalpy at the entrance to the heatexchanger that accepts external heat kJ/kg? How much external heatis supplied to the cycle in kJ/kg? Round your answer to two decimalplaces. What is the enthalpy at the entrance to the heat exchangerthat rejects heat to the surrounding in kJ/kg? How much heat isrejected to the surroundings in kJ/kg? How much net work isproduced in kJ/kg? What is the thermal efficiency as a percentage (0%-100%)? What is the thermal efficiency as a percentage (0% - 100%) ifthere was no regenerator?

Answered: Image /qna-images/answer/2ffd3abf-fbdd-44a3-a2a6-c39f02e908a8.jpg

Answered: Consider a regenerative Brayton cycle…

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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2. In Otto Cycle, air at 18°C is first compressed to one- eight of its original volume. If the heat input to the cycle is 460 KJ/Kg of air, determine a. The temperature of the remaining points in the cycle. b. The ratio of the maximum and minimum pressure in the cycle.
What are the main reasons for running jet engines at high temperatures? Select one or more: a. Decreased noise b. Greater thermal creep Increased efficiency C. d. Increased fuel burn e. Higher thrust
A gas turbine that operates on Brayton cycle provides a furnace with hot pressurized gas through its exhaust at 220kPa. The turbine produces only enough power as required by the compressor. The compressor has inlet conditions of 110kPa and 300K. The inlet condition of the turbine is 850oC. Determine the pressure ratio of the compressor. Draw the schematic diagram.
Read the question carefully before answering. Box or indicate your final ansurers when solving and draw your diagrams cleanly. Complete solution please. Use 2 decimal places when solving and for final answers. Draw the PV and TS diagram with proper label of points when required. 1. An Otto Cycle receives air at 101 kPa and 20c, then compresses it to 10% of the original volume. The max temperature of the air is 1050 K. Draw the PV and TS diagrams, and selve for the following: the remaining temperatures, QA, QR. Whet and efficiency.
In a gas-turbine plant working on a Brayton Cycle, the air at the inlet of the compressor is at 25C (298.15 K) and 100 kPa. The pressure ratio (PB/PA=PC/PD) is 6.50 and the maximum permissible temperature in the turbine is 800C (1073.15 K). Consider CP = (7/2)R and CV = (5/2)R and n = 1 mol Determine the following of the ideal air cycle: (adiabatic reversible compression and adiabatic reversible expansion). Express heat and work in Joules. Thermal efficiency of the ideal air cycle
11. Helium is used in a Carnot engine where the volumes beginning with the constant temperature heat addition are Vi = 0.3565 m³, V2 = 0.5130 m2, V3 = 8.0 m³, and Va = 5.57 m2.Determine the thermal efficiency.
Please match the formulate (energy and/or mass balance) to the corresponding steady flow devices: A not well insulated nozzles by neglecting the potential energy change. An adiabatic turbine by neglecting the kinetic and potential energy change. A not well insulated compressor by neglecting the kinetic and potential energy change. An adiabatic mixing chamber with two inlets and one exit by neglecting the kinetic and potential energy change. An adiabatic throttling valve by neglecting the kinetic and potential energy change. A. B. C. D. E.
2. In Otto Cycle, air at 18°C is first compressed to one-ninth of its original volume. If the heat input to the cycle is 460 KJ/Kg of air, determine a. The temperature of the remaining points in the cycle. b. The ratio of the maximum and minimum pressure in the cycle.
In a gas-turbine plant working on a Brayton Cycle, the air at the inlet of the compressor is at 25C (298.15 K) and 100 kPa. The pressure ratio (PB/PA=PC/PD) is 6.50 and the maximum permissible temperature in the turbine is 800C (1073.15 K). Consider CP = (7/2)R and CV = (5/2)R and n = 1 mol Determine the following of the ideal air cycle: (adiabatic reversible compression and adiabatic reversible expansion). Express heat and work in Joules. A. TB and TD; PB, PC, and PD for these conditionsB. Heat supplied (Process BC)C. Maximum work (WSmax ), minimum work (WSmin) and WnetD. Thermal efficiency of the ideal air cycleE. Thermal efficiency of the air cycle, if the compressor and turbine operate adiabatically but irreversibly with efficiencies and temperatures after the compression and expansion steps
A=83 B=87

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