Q1. (a)Discuss the factors that have to be considered in the design of anengine cylinder.(b)The pressure, volume and temperature at the beginning ofcompression of a four stroke petrol engine are 105kN/m²,0.0005m³ and25°C respectively. The maximum temperature of the cycle is 1400°C.The volume ratio of the engine is 8:1.i)Calculate the mean effective pressure in the cylinder.ii)The brake power produced by the engine is 60kW at a speed of5200 r.p.m. If the Mechanical efficiency of the engine is 82%,determine the size of the cylinder bore and length.iii)Estimate the thickness of the cylinder head to support the gasload present in the engine cylinder. Assume the material hasa tensile stress of 42N/mm².(c)Discuss the nature of the stresses present in the cylinder walls.

Since all questions are different, according to our guidelines, we are supposed to the answer 1st…

Answered: Q1. (a) Discuss the factors that have…

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

Q1/An air-standard Diesel cycle absorbs 1500 J-mol-1 of heat. The pressure and temperature at the beginning of the compression step are 1 bar and 20°C, and the pressure at the end of the compression step is 4 bar. Assuming air to be an ideal gas for which CP = (7/2)R and CV = (5/2)R, what are the compression ratio and the expansion ratio of the cycle?
Give the design formulae of a dry liner in an internal combustion engine.?
At the beginning of the compression process of air-standard Diesel cycle operating with a compression ratio of 18, the temperature is 300 K and the pressure is 0.1 MPa. The cut-off ratio for the cycle is 2 and the mass flow rate in the system is 1900 kg/hr. Cp= 1.006 kJ/kg K Cv= 0.717 kJ/kg K 1) which figure represents the diagram for the process 2) which formula should be used to determine the temperature after compression? 3) calculate the temperature after isentropic compression in the presentable unit 4)which formula should be used to determine the temperature after heating? 5) calculate the temperature after isentropic compression in the presentable unit? 6) calculate the temperature after isentropic expansion in the presentable unit? 7) calculate the pressure after compression in kPa ? 8) which formula should be used to determine the work output of the engine? 9) calculate the work output of the engine kW? 10) calculate the thermal efficiency of the cycle in %? 11) which…
The temperature at the beginning of the compression process of air-standard otto cycle with a compression ratio of 10 is 21 °C , the pressure is 101 kPa, and the mass flow rate of air in the engine is 580 kg/min. The maximum temperature during the cycle is 1300 °C. Cp= 1.006 kJ/kg K Cv= 0.717 kJ/kg K 1) calculate the temperature after isentropic expansion in the presentable unit? 2) which formula should be used to determine the power obtainable from the cycle? 3calculate the power obtainable from the cycle in kW?
Air enters the compressor of an air standard Brayton cycle with a volumetric flow rate of 60m3/s at 0.8 bar, 280K. The compressor pressure ratio is 20, and the maximum cycle temperature is 1800k. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. Determine: a) the net power developed, in kW. b) the rate of heat addition in the combustor, in kW. c) the percent thermal efficiency of the cycle
1. In an ideal air-standard Otto cycle, the initial conditions are 1 bar and 300 K. The compression ratio is 12:1, and the maximum cycle temperature is 2500 K. Assuming cp = 1.004 kJ/kg-K & k = 1.4, find: (a) show the cycle in both P-v and T-s diagrams. Clearly label all states and energy transfers. (b) temperature at the end of compression, T₂ in K. (c) heat added during the combustion process in kJ/kg. (d) thermal efficiency of the cycle. (e) net work output from the cycle in kJ/kg.
The rate of heat addition to an ideal air-standard Brayton cycle is 1.0 x 107 Btu/h. The pressure ratio for the cycle is 12 and the minimum and maximum temperatures are 520°R and 2800°R, respectively.Determine:(a) the percent thermal efficiency of the cycle.(b) the mass flow rate of air, in lb/h.(c) the net power developed by the cycle, in hp.
The temperature at the beginning of the compression process of air-standard otto cycle with a compression ratio of 10 is 21°C , the pressure is 101kPa, and the mass flow rate of air in the engine is 580 kg/min. The maximum temperature during the cycle is 1300°C. Cp= 1.006 kJ/kg K Cv= 0.717 kJ/kg K 1) calculate the temperature after isentropic compression in the presentable unit? 2) which formula should be used to determine the temperature after the compression? 3) which formula should be used to determine the temperature after expansion? 4) calculate the temperature after isentropic expansion in the presentable unit? 5) which formula should be used to determine the power obtainable from the cycle? 6) calculate the power obtainable from the cycle kW? 7) calculate the thermal efficiency of the cycle in % ? 8 )which formula should be used to determine the thermal efficiency of the cycle ? 9) which figure represents the diagram for the process?
In an isochoric and isobaric combustion cycle, the indicated mean pressure is 10 bars and the maximum pressure is 60 bars. The pressure and temperature at the start of the cycle are 1 bar and 17 oC. The volumetric compression ratio is 16/1. The mass constant of gas, R = 287 J / kg K The specific heat at constant volume, cv = 718 J / kg K. Calculate the maximum temperature of the combustion cycle for a thermal efficiency of 60%.
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 1950 K. Determine: (a) the compression ratio, r. (b) the cutoff ratio, rc. (c) the thermal efficiency of the cycle, ?th (%). (d) the mean effective pressure, mep (kPa).
At the beginning of the compression process of an air-standard Otto cycle, P1=1bar, T1=290K, V1=400cm3. The maximum temperature in the cycle is 2200K and the compression ratio is 8. Determine the (a) net power output, in kW, if the engine has four cylinders and the cycle is repeated 1200 times per minute in each cylinder. Also, (b) show the T-s and P-? diagrams. Note that the specific heats are NOT constant.
One kilogram of a perfect gas (air) is used as a working substance in a Carnot power cycle. At thebeginning of isentropic compression, the temperature is 326 o K and the absolute pressure is 359 kPa. Theabsolute pressure at the end of the isentropic compression is 1,373 kPa. For this cycle, the isothermalexpansion ratio (v 3 /v 2 ) is 2.0. For the cycle, calculate the heat supplied, kJ/kg.A., heat rejected, and the network

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