An air-standard Diesel cycle operates with a compression ratio, r = 10:1. If the initialconditions at bdc are 1 bar and 27 °C, and the energy addition is 2000 kJ/kg of air, calculatethe salient points around the cycle, and the thermal efficiency. Show that the efficiencycalculated from the cycle calculation is equal to that from Eqn (3.20). Assume thecompression and expansion are isentropic and K = 1.4. How does this compare with theefficiency of a Carnot cycle between the two temperature limits, and what is the value of ẞ?[45.02%; 89.07%; 3.6453]

Compression ratio (r): 10:1Initial pressure at BDC : 1 barInitial temperature at BDC T1: 27 °C =…

Answered: An air-standard Diesel cycle operates…

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

The Otto cycle should be used to model an engine cycle. Every one of thepresumptions of the ideal Otto cycle should be applied aside from that a polytropicinteraction with n 1.3 will be utilized for the expansion process. The conditionstoward the beginning of pressure is T1 = 333 K, P1 is 90 kPa and the compressionratio is 8. The energy infused into the cycle during the consistent volume process is2000 kJ/kg. Assume constant specific heatsa) Find the expansion work (kJ/kg)b) Find the net heat transfer for the cycle (kJ/kg) diesel
A gasoline internal combustion engine can be modeled by an ideal Otto cyclethat has a compression ratio of 8.91. At the beginning of the compression process (state 1), airis at 100 kPa and 300 K. The heat transfer into the air during the constant-volume heat additionprocess (state 2 to 3) is 693.08 kJ/kg. Note: Consider constant specific heats of air at 300 K. 1 – Find the temperature in K before heat additionprocess ;A) 660 KB) 680 KC) 700 KD) 720 K 2 – Find the maximum temperature in K during thecycle A) 1625 KB) 1655 KC) 1685 KD) 1715 K3 – Find the maximum pressure in MPa during the cycle A) 4 MPaB) 4.5 MPaC) 5 MPaD) 5.5 MPa4 – Find the temperature in K before the heat rejection processA) 660 KB) 700 KC) 740 KD) 780 K
A cold air-standard Diesel cycle (k =1.4) has a compression ratio of 18.1 and a cutoff ratio of 2.5. The state at the beginning of the compression is fixed at 14.7 psia and T = 85 F. For this cycle determine: %3D (a) sketch a P-V diagram for the cycle and label the data states (b) the maximum pressure (psia) (c) the thermal efficiency (d) the net work (Btu/lbm) NA k**L.4jhas a comoression rall 9. All pdf pdf 24°C II
i need the answer quickly
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.…
I need the answer as soon as possible
Help fast please
With a thermal efficiency of 45%, an ideal air-standard Brayton cycle operates at steady state with compressor inlet conditions of 300k and 100kpa and a fixed turbine inlet temperature of 1700k for the cycle. Determine the net power developed by the cycle
H.W2: An air-standard Carnot cycle is executed in a closed system between the temperature limits of 350 and 1200 K. The pressures before and after the isothermal compression are 150 and 300 kPa, respectively. If the net work output per cycle is 0.5 kJ, determine (a) the maximum pressure in the cycle, (b) the heat transfer to air, and (c) the mass of air. Assume variable specific heats for air. Answers: (a) 30,013 kPa, (b) 0.706 kJ, (c) 0.00296 kg
An air-standard dual cycle has a compression ratio of 8.6 and displacement of V = 2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 4.25 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa.
A four-stroke and four-cylinder diesel engine with a stroke volume of 4 liters 18/1It has an air fuel ratio and works according to a mixed cycle. The compression ratio of the engine is 16/1 andThe cylinder diameter is 10 cm. The pressure and temperature at the start of compression are 100 kPa and 60°. your fuelIts calorific value is 42500 kJ/kg. Half of the heat input to the cycle is at constant volume and the other half at constant volume.since it takes place under pressure;a) Calculate the pressure and temperature values at all points and present them in a tabular form.b) Find the thermal efficiency.
An ideal gas Diesel engine, that has an inlet temperature, pressure and compression ratio of 21 0C and 102 kPa 19:1 respectively. The maximum cycle temperature is 1,234 0C. Take Specific heat at constant pressure and constant volume for air as 1.005 kJ/kg K and 0.717 kJ/kg K respectively. Calculate the specific heat rejected during the cycle to one decimal place and include the correct SI unit.

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