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A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be?
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A gas turbine developes 120kj of work while the compressor absorbed 60...
Calculation of Thermal Efficiency:
Effect of Regenerator:
Calculation of New Thermal Efficiency:
Conclusion:
- Heat Supplied = 200 kJ
- Work Developed = 120 kJ
- Work Absorbed = 60 kJ
- Efficiency = (Work Developed - Work Absorbed) / Heat Supplied
- Efficiency = (120 - 60) / 200 = 0.3 or 30%
Effect of Regenerator:
- Regenerator recovers 40% of the heat from the exhaust.
- This heat is used to preheat the compressed air before it enters the combustion chamber.
- This reduces the amount of heat needed to be supplied from the external source.
- As a result, the overall thermal efficiency increases.
Calculation of New Thermal Efficiency:
- Heat Supplied = 200 kJ - 40% of Exhaust Heat
- Heat Supplied = 200 kJ - 0.4 * (120 kJ - 60 kJ) = 180 kJ
- Efficiency = (Work Developed - Work Absorbed) / Heat Supplied
- Efficiency = (120 - 60) / 180 = 0.33 or 33%
Conclusion:
- The use of a regenerator in the gas turbine increases the overall thermal efficiency from 30% to 33%.
- This is due to the recovery of waste heat from the exhaust and its utilization to preheat the compressed air.
- The increase in efficiency results in a more efficient and cost-effective gas turbine.
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A gas turbine developes 120kj of work while the compressor absorbed 60...
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A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be?
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A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be?.
A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A gas turbine developes 120kj of work while the compressor absorbed 60kj of work and the heat supplied is 200 kj .if a regenerator which would recover 40% of heat is the exhaust were used, then the increase in overall thermal efficiency would be?.
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