10:385.5 In an air standard Otto cycle the maximum and minimum temperatures are 1400 and15°C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratioand the cycle efficiency. Calculate also the ratio of maximum to minimum pressuresin the cycle.All 60%(5.27/1: 48.5%; 30.65/1)5.6 A four-cylinder petrol engine has a swept volume of 2000 cm³, and the clearance volumein each cylinder is 60 cm³. Calculate the air standard cycle efficiency. If the introductionconditions are I bar and 24 °C, and the maximum cycle temperature is 1400 °C, calculatethe mean effective pressure based on the air standard cycle.(59.1%: 5.28 bar)5.7 Calculate the cycle efficiency and mean effective pressure of an air standard dieselcycle with a compression ratio of 15/1, and maximum and minimum cycle temperaturesof 1650 °C and 15°C respectively. The maximum cycle pressure is 45 bar.(59.1%; 8.38 bar)5.95.8 In a dual-combustion cycle the maximum temperature is 2000°C and the maximumpressure is 70 bar. Calculate the cycle efficiency and the mean effective pressure whenthe pressure and temperature at the start of compression are 1 bar and 17°C respectively.The compression ratio is 18/1.(63.6%; 10.46 bar)An air standard dual-combustion cycle has a mean effective pressure of 10 bar. Theminimum pressure and temperature are 1 bar and 17 °C respectively, and the compressionratio is 16/1. Calculate the maximum cycle temperature when the cycle efficiency is60%. The maximum cycle pressure is 60 bar.(1759°C)000

Hi,As per the guidelines, we can solve only first question for you since you have not specified.…

Answered: In an air standard Otto cycle the…

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

A Diesel Cycle operates with a compression ratio of 13:5 and with a cutoff occurring at 6% of the stroke. State 1 is defined by 14 psia and 140℉. For the hot-air standard with k = 1.34 and for an initial 1 cu ft, compute (a) t2, P2, V2, t3, V3, P4, and t4, (b) QR, (c) W, (d) e and Pm. (e )For a rate of circulation of 1000 cfm, compute the horsepower.
A Diesel Cycle operates with a compression ratio of 13:5 and with a cutoff occurring at6% of the stroke. State 1 is defined by 14 psia and 140°F. For the hot-air standard with k= 1.34 and for an initial 1 cu ft, compute (a) t2, P2, V2, t3, V3, P4, and t4, (b) QR, (c) W, (d)e and Pm. (e )For a rate of circulation of 1000 cfm, compute the horsepower.
The pressure and temperature at the beginning of compression of an air standard diesel cycle are 80Kpa and 300K. At the end of the heat addition the pressure is 6821Kpa and temperature 2150K. Caluclate 1. Compression ratio 2 cuttoff ratio 3. Thermal Efficiency 4.Mean Effective Pressure
01 Two engines are to operate on Otto and Diesel cycles with the following data: Maximum temperature 1400 K, exhaust temperature 700 K. State of air at the beginning of compression 0.1 MPa, 300 K. Estimate the compression ratios, the maximum pressures, efficiencies, and rate of work outputs (for 1 kg/min of air) of the respective cycles.
In a diesel engine, the compression starts at 11 pounds per square inch absolute (psia) and 111 degrees Fahrenheit. The compression ratio, denoted by rk, is 14.1, and fuel cut-off happens at 6% of the stroke. The engine is considered light-loaded, and the compression process follows a cold-air standard. You are asked to determine the state points in all corners of the cycle for a unit mass, find the mean effective pressure, and compute the air-standard efficiency.
An air standard Otto cycle, air enters at 104.7 Kpa and 29C. The compression ratio is 9:1. If the net worth of the cycle is 110Kj/kg. Calculate the heat supplied in Kj/kg, the temperature and pressure at the end of compression, the percentage clearance, and the maximum temperature and pressure of the cycle
The compression ratio of an air-standard Dual cycle is 14 and the maximum pressure in the cycle is limited to 70 bar. The pressure and temperature of cycle at the beginning of compression process are 1 bar and 300 K. If the total amount of heat added is 20 kJ, calculate the cut-off ratio, rc. Assume : cylinder bore = 250 mm, stroke length = 300 mm, cp = 1.005, cv = 0.718 and γ = 1.4.
4. What is the maximum thermal efficiency possible for a power cycle operating between 1300℉ and 225℉? 5. Calculate the ideal air standard cycle efficiency based on the Otto cycle for a gas engine with a cylinder bore of 60 mm, a stroke of 75 mm and a clearance volume of 21.3 cm3
A 4-litre 4-cylinder air-standard Otto cycle engine works on benzene fuel at an air-fuel ratio of 15.The compression ratio of the engine is 10. At the start of the compression stroke, conditions in the cylinders are 60°C and 100 KPa. the benzene low heating value is 41800 KJ/kg Calculate: 1. Temperature and pressure at each state of the cycle, Indicated thermal efficiency, Residual gas temperature after blow down and ambient temperature 2.plot the PV diagram of this cycle and If this engine is operating on the dual cycle, will the efficiency be larger or smaller than the diesel cycle?
5. (a) If the compression ratio of an engine working on Otto cycle isIncreased from 5 to 7, find the percentage increase in thermalefficiency. (b) Derive an expression for thermal efficiency of ideal Brayton cycle.(c) In an engine working on the ideal Otto cycle, the pressure and temperature at the beginning of compression are 100 kPa and 40 °C respectively. The ratio of specific heat capacities is 1.4. If the airstandard efficiency of the engine is 50%, determine(i) The compression ratio. (ii) The pressure and temperature at the end of adiabaticcompression. (6a) Explain and discuss in your own words, the following three concepts incombustion: stoichiometric mixture of air and fuel, weak mixture and richmixture. Explain their importance in combustion applications.(6b) A gas fuel has the following volumetric composition:Propane C3H8: 73 %Butane C4H10: 5 %Ethane, C2H6: 3%Nitrogen N2: 19%(i) Write out the complete combustion equations for all the combustible constituents individually.…
An air-standard Otto cycle uses 0.1 kg of air and has a clearance of 17%. The intake conditions are 98 kPa and 37°C, and the energy release during combustion is 1,600 kJ per kg.Determine the Piston Displacement Volume in Cubic Centimeters.
105#11 An air standard Ericson Cycle operates under steady flow conditions. Air is at 120 KPa and 27degree C at the beginning of the isothermal compression process, during which 150KJ/kgm of heat is rejected. The air is at 927degree C during the isothermal heat-addition process. Compute the maximum pressure in the cycle, the network and thermal efficiency of the cycle

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

In an air standard Otto cycle the maximum and minimum temperatures are 1400 and 15°C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and the cycle efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. (5.27/1: 48.5%; 30.65/1)