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A gas-turbine power plant operates on the regenerative Brayton cycle between the pressure limits of 100 and 700 kPa. Air enters the compressor at 25 °C at a rate of 12.6 kg/s and leaves at 260 °C. It is then heated in a regenerator to 400 °C by the hot combustion gases leaving the turbine. A diesel fuel with a heating value of 42,000 kJ/kg is burned in the combustion chamber with a combustion efficiency of 97 percent. The combustion qgases leave the combustion chamber at 871 °C and enter the turbine whose isentropic efficiency is 85 percent. Using variable specific heats to determine (a) the second-law efficiencies of the compressor, the turbine, and the regenerator, (b) the rate of the energy flow with the combustion gases at the regenerator exit, and (c) the entropy generation and exergy destruction through the regenerator and combustion chamber. Regenerator Combustion chamber 400°C 100 kPa 871°C 30°C 700 kPa 260°C Turbine Compressor

A gas-turbine power plant operates on the regenerative Brayton cycle between the pressure limits of 100 and 700 kPa. Air enters the compressor at 25 °C at a rate of 12.6 kg/s and leaves at 260 °C. It is then heated in a regenerator to 400 °C by the hot combustion gases leaving the turbine. A diesel fuel with a heating value of 42,000 kJ/kg is burned in the combustion chamber with a combustion efficiency of 97 percent. The combustion qgases leave the combustion chamber at 871 °C and enter the turbine whose isentropic efficiency is 85 percent. Using variable specific heats to determine (a) the second-law efficiencies of the compressor, the turbine, and the regenerator, (b) the rate of the energy flow with the combustion gases at the regenerator exit, and (c) the entropy generation and exergy destruction through the regenerator and combustion chamber. Regenerator Combustion chamber 400°C 100 kPa 871°C 30°C 700 kPa 260°C Turbine Compressor

Elements Of Electromagnetics
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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A gas-turbine power plant operates on the regenerative Brayton cycle between the pressure limits of 100 and 700 kPa. Air enters the compressor at 25 °C at a rate of 12.6 kg/s and leaves at 260 °C. It is then heated in a regenerator to 400 °C by the hot combustion gases leaving the turbine. A diesel fuel with a heating value of 42,000 kJ/kg is burned in the combustion chamber with a combustion efficiency of 97 percent. The combustion qgases leave the combustion chamber at 871 °C and enter the turbine whose isentropic efficiency is 85 percent. Using variable specific heats to determine (a) the second-law efficiencies of the compressor, the turbine, and the regenerator, (b) the rate of the energy flow with the combustion gases at the regenerator exit, and (c) the entropy generation and exergy destruction through the regenerator and combustion chamber. Regenerator 5) Combustion chamber 400 C 100 kPa 30°C 3 871°C- 700 kPa 260°C Compressor Turbine
Transcribed Image Text:A gas-turbine power plant operates on the regenerative Brayton cycle between the pressure limits of 100 and 700 kPa. Air enters the compressor at 25 °C at a rate of 12.6 kg/s and leaves at 260 °C. It is then heated in a regenerator to 400 °C by the hot combustion gases leaving the turbine. A diesel fuel with a heating value of 42,000 kJ/kg is burned in the combustion chamber with a combustion efficiency of 97 percent. The combustion qgases leave the combustion chamber at 871 °C and enter the turbine whose isentropic efficiency is 85 percent. Using variable specific heats to determine (a) the second-law efficiencies of the compressor, the turbine, and the regenerator, (b) the rate of the energy flow with the combustion gases at the regenerator exit, and (c) the entropy generation and exergy destruction through the regenerator and combustion chamber. Regenerator 5) Combustion chamber 400 C 100 kPa 30°C 3 871°C- 700 kPa 260°C Compressor Turbine
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