MCMIAn aircraft engine operates on a simple ideal Brayton cycle with a pressure ratio of 12.5. 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.Determine the power produced by this engine and its thermal efficiency. Use constant specific heats at room temperature. Theproperties of air at room temperature are cp=1.005 kJ/kg-K and k=1.4.The power produced by this engine is 122.42 kW.The thermal efficiency of this engine is 24.48 %.2WS3ED80$4What is correct or incorrect for the work you have completed so far. It does not indicate conR5TG< Prev610 of 10YH&7UNext >819KF900P

Answered: Image /qna-images/answer/25b68d73-ed95-49db-a33d-e89fceafb432.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

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An ideal Otto cycle has a compression ratio of 6. At the beginning of the compression process, air is at 100 kPa and 27°C. If the temperature of the air at the end of the expansion process is 450°C, determine the maximum temperature, in K (Kelvin), in the cycle. (Apply cold-air-standard assumptions: constant specific heat)
A four-cylinder, two-stroke 2.4-L diesel engine that operates on an ideal Diesel cycle has a compression ratio of 22 and a cutoff ratio of 1.8. Air is at 70°C and 97 kPa at the beginning of the compression process. Using the cold-airstandard assumptions, determine how much power the engine will deliver at 4250 rpm.
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 mean effective pressure for the cycle. The mean effective pressure for the cycle is 0 kPa.
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, determine the net work of the system as a function of compression ratio, r.
A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid and delivers 30.00 MW of power. The minimum and maximum temperatures in the cycle are 310 and 900 K, and the pressure of air at the compressor exit is eight times the value at the compressor inlet. Assuming an isentropic efficiency of 80 percent for the compressor and 86 percent for the turbine, determine the mass flow rate of air through the cycle using constant specific heats at room temperature. The properties of air at room temperature are cp = 1.005 kJ/kg. K and k=1.4. The mass flow rate of air through the cycle is kg/s.
An ideal Diesel cycle has a maximum cycle temperature of 2000°C. The state of the air at the beginning of the compression is P = 95 kPa and T₁-15°C. This cycle is executed in a four-stroke, eight-cylinder engine with a cylinder bore of 10 cm and a piston stroke of 12 cm. The minimum volume enclosed in the cylinder is 5 percent of the maximum cylinder volume. Determine the power produced by this engine when it is operated at 1400 rpm. Use constant specific heats at room temperature. The properties of air at room temperature are cp=1.005 kJ/kg-K, cy=0.718 kJ/kg-K, R= 0.287 kJ/kg-K, and k=1.4. The power produced by this engine is 603 KTV. 2 W 3 E 4 R T U FB F9 0
An ideal diesel cycle powered by air has a compression ratio of 20. At the beginning of the compression process, the pressure of the air is 100 kPa, the temperature is 20°C, and it is desired that the highest temperature of the cycle should not exceed 2250 K. Show the cycle in the P-v diagram. Assume the specific heats are constant at room temperature. k=1.4 CP=1.005kJ/kgK CV=0.718 kJ/kgK R=0.287kJ/kgK a) Calculate the heat entering and leaving the cycle, the thermal efficiency of the cycle, b) Calculate the average effective pressure of the cycle.
A four-cylinder two-stroke 1.8-L diesel engine that operates on an ideal Diesel cycle has a compression ratio of 20 and a cutoff ratio of 1.7. Air is at 70°C and 97 kPa at the beginning of the compression process. Using the cold-air standard assumptions, determine how much power the engine will deliver at 2300 rpm and Plot the net work output, mean effective pressure, and thermal efficiency as a function of thecompression ratio.

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