An aircraft engine operates on a simple ideal Brayton cycle with a pressure ratio of 11.5. Heat is added to the cycle at a rate of 500kW, air passes through the engine at a rate of 1 kg/s, and the air at the beginning of the compression is at 70 kPa and 0°C. Determinethe power produced by this engine and its thermal efficiency. Use constant specific heats at room temperature. The properties of air atroom temperature are cp = 1.005 kJ/kg-K and k=1.4.The power produced by this engine isThe thermal efficiency of this engine isKW.%.

Answered: Image /qna-images/answer/506f1ba6-1c01-44ab-ab5f-32d26b03cbef.jpg

Answered: An aircraft engine operates on a simple…

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

See similar textbooks

Similar questions

An aircraft engine operates on a simple ideal Brayton cycle with a pressure ratio of 10. Heat is added to the cycle at a rate of 500 kW; air passes through the engine at a rate of 1 kg/s; and the air at the beginning of the compression is at 70 kPa and 08C. Determine the power produced by this engine and its thermal efficiency. Use constant specific heats at room temperature.
Consider a simple ideal Brayton cycle with air as the working fluid. The pressure ratio of the cycle is 7.2, and the minimum and maximum temperatures are 300 K and 1350 K, respectively. Now the pressure ratio is doubled without changing the minimum and the maximum temperatures in the cycle. Assuming constant specific heats for air at room temperature; show the initial process and process change in a T-s diagram; calculate the change in the net work output per unit mass; and determine the change in thermal efficiency of the cycle.
A simple ideal Brayton cycle operates with air with minimum and maximum temperatures of 27°C and 877°C. It is designed so that the maximum cycle pressure is 2000 kPa and the minimum cycle pressure is 100 kPa. Determine the net work produced per unit mass of air each time this cycle is executed and the cycle's thermal efficiency. Use constant specific heats at room temperature. The properties of air at room temperature are cp=1.005 kJ/kg-K and k = 1.4. 2 Compressor 0 Qout lin Turbine W The net work produced per unit mass of air is The thermal efficiency is %. kJ/kg. h
A simple ideal Brayton cycle operates with air with minimum and maximum temperatures of 27°C and 727°C. It is designed so that the maximum cycle pressure is 2000 kPa and the minimum cycle pressure is 100 kPa. Determine the net work produced per unit mass of air each time this cycle is executed and the cycle’s thermal efficiency. Use constant specific heats at room temperature
4. An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The stateof air at the beginning of the compression process is 95 kPa and 20°C. If the maximumtemperature in the cycle is not to exceed 2200 K, determine (a) the thermal efficiency and (b)the mean effective pressure. Assume constant specific heats for air at room temperature.
A spark- ignition engine operates on an Otto cycle with a compression ratio of 9 and a temperature limits of 30°C and 1000°C. If the power input is 500 kw, calculate the mass flow rate of air.
A spark ignition engine that operates on Otto cycle has a compression ratio of 10. At the beginning of the compression process, air is at 100 kPa and 25 C. 750 kJ/kg of heat is transferred to air duringthe constant-volume heat-addition process. Consider the variation of specific heats with temperature. Explain the mechanical efficiency for ideal otto cycle of two and four stroke engines?
An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of air at the beginning of the compression process is 95 kPa and 20°C. If the maximum temperature in the cycle is not to exceed 2200 K, draw the cycle on p-v and t-s diagrams and calculate the thermal efficiency.
4. An ideal diesel cycle has a compression ratio of 20 and a cutoff ratio of 1.3. Determine the maximum temperature of the air and the rate of heat addition to this cycle when it produces 250kW of power and the state of the air at the beginning of the compression cycle is 90kPa and 15°C. Use constant specific heats at room temperature.
Consider a simple ideal Brayton cycle with air as the working fluid. The pressure ratio of the cycle is 6, and the minimum and maximum temperatures are 300 and 1300 K, respectively. Now the pressure ratio is doubled without changing the minimum and maximum temperatures in the cycle. Determine the change in the thermal efficiency of the cycle as a result of this modification. Assume variable specific heats for air.
In an air standard dual cycle two –thirds of the total heat supply occurs at constant volume . The state at the beginning of the compression process is 90kPa and 20°C and the compression ratio is 9. if the total heat supply is2100kJ/kg, Determine the efficiency of the cycle.
An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27°C, and 800 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Take into account the variation of specific heats with temperature. The gas constant of air is R = 0.287 kJ/kg.K. Determine the pressure and temperature at the end of the heat-addition process. (You must provide an answer before moving on to the next part.) kPa. The pressure at the end of the heat-addition process is 4568.67 The temperature at the end of the heat-addition process is 1803.425 > K.

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS