Answer the problem 1 1. At the beginning of the compression stroke, an ideal Otto cycle has an air pressure of 15 psia, a temperatureof 75 °F, and a specific volume of 13.2 cubic feet per pound. At the end of compression, the specific volumeis1.76 cubic feet per pound, the heat supplied to the cycle is 352 Btu/lb. Calculate the following:a. the compression ratiob. the heat rejectedc. net work of the cycled. the thermal efficiency of the cyclee. the horsepower developed by an ideal engine operating on this cycle using 0.50 pound air per second.

“Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Answered: 1. At the beginning of the compression…

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 air standard dual cycle has a compression ratio of 15 and compression begins at 0.1 MPa 40°C. The maximum pressure is limited to 6Mpa and the heat added is 1.675MJ/kg. Sketch the cycle on T-S and P-V diagrams and compute per kg of air; a) The heat supplied at constant volume b) The heat supplied at constant pressure c) The net work done d) The cycle thermal efficiency e) The temperature at end of constant volume heating f) The cut off ratio g) The mean effective pressure
An ideal Diesel cycle operates with a compression rate of 13.5 and with a cutoff occurring at 6% of the stroke. State 1 is defined by 14 psia and 140oF. For the hot air standard with k=1.34 and for an initial volume of 1 cu. ft, find T2, P2, V2, T3, V3, P4, and T4 ; determine the heat added and rejected; Wnet, thermal efficiency, MEP, and the equivalent horsepower if the rate of circulation is at 1000 cu. ft per minute. Show the T-S and P-V diagrams.
Determine percent change in efficiency of Otto cycle when Compression ratio is changed to 12 from 8.
An Otto cycle engine installed in a road vehicle has a volume compression ratio of 6 and provides a gas mileage of 15 mpg at the vehicle’s normal traveling speed of 40 mph. For purposes of this problem, the cycle can be assumed to be an ideal Otto cycle using air with fixed values of specific heats. The specific heat values are:
From a Brayton cycle, the air entering the compressor has a temperature of 300 K, a pressure of 100 kPa and an air flow rate of 6 kg/s. The compressor pressure ratio is 10. The temperature of the working fluid entering the turbine is 1400 K. The efficiency of the turbine and compressor is 80% and the efficiency of the regenerator is 80%. Calculate A. thermal efficiency, B. workback ratio, C. power produced
In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below. 3. Calculate the heat input during reheating process.
15. In a Rankine cycle, steam leaves the boiler superheated with the following conditions: pressure of 3.0 MPa and temperature of 450 °C. When expanded in the turbine, it delivers energy equivalent to 750 kJ/kg. a. What is the quality of the wet steam leaving the turbine at 100 °C? b. If the water enters the cycle as saturated water at 100°C, what is the heat of waste from the cycle? c. Calculate the pump work in KJ/kg d. Calculate the heat added by the boiler.
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.
3.) The steam power plant requires 100 gallons per minute to cool the steam in the condenser from an exhaust pressure of 100 kPa. The feedwater pressure is 100 bar and 500 degrees Celsius. The condensate leaves the condenser at saturated liquid. The cooling tower temperature for the leaving cooling water is 25 degrees Celsius and the cooling water leaving the condenser is 42 degrees Celsius. Calculate the mass of the steam in kg/s assuming ideal rankine cycle and standard density of cooling water.
A Brayton cycle with an air inlet temperature of 17 °C has a pressure ratio of 16. While the cycle produces 14 MW of energy, there is an input of 960 kJ/kg 1 heat into the cycle. Recognizing that specific heats change with temperature; a) Find the highest temperature (K) of the cycle. b) Find the compressor work (kJ/kg). c) Find the turbine work (kJ/kg). d) Find the mass flow rate (kg/s) of the air. e) Calculate the thermal efficiency of the cycle.
2. An air standard diesel cycle has a compression ratio of 19/1 and the heat supplied to the working fluid is 1800 KJ/kg. At the beginning of the compression process the pressure and temperature are 1.0 bar and 250C respectively. Determine: a. The temperature at the remaining points in the cycle. b. The air standard thermal efficiency. c. The mean effective pressure of the cycle.
Within 30 Minutes. A gas turbine power plant operates on a standard air cycle between pressures of 0.1 and 0.6 MPa. The inlet temperature is 22°C in the compressor and in the turbine it is 747°C. The isentripic efficiencies of the compressor and the turbine are 84% and 87% respectively, a regenerator is used that has an efficiency of 60%. Using constant specific heats, calculate the thermal efficiency

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