MTQ5At the beginning of the compression process of an air-standard Diesel cycle operatingwith 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 mass flow rate in the system is 1900 kg/hr.Cp = 1.006 kJ/kg KCv = 0.717 kJ/kg K

This question is based on the concept of diesel cycle from IC Engine.

Answered: 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

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At the beginning of the compression process of an air standard Otto cycle, P1= 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Va = 2.3 L. Determine per cylinder:
3. An air-standard Otto cycle operates with a compression ratio of 8 and a maximum temperature per cycle of 1400 K. If the temperature and pressure at the beginning of compression stroke are 300 K and 100 kPa respectively, determine the following assuming air to be an ideal gas with constant specific heats Cp = 1.005 kJ/kg K and Cv = 0.718 kJ/kg K: (a) The heat supplied (b) The work produced (c) The thermal efficiency.
THERMODYNAMICS The compression ratio of an air-standard dual cycle is 14 and the cutoff ratio is 1.2. During the constant-volume heat addition process, the pressure ratio is 1.5. Determine the thermal efficiency, heat added, maximum gas pressure, and temperature when this cycle is run at 80 kPa and 20 degree celcius at the start of the compression. Make use of the cold-air assumption. Show complete solution on a paper.
At the beginning of the compression process of an air—standard Diesel cycle operating with a compression ratio of 18, the temperature is 300 K and the pressure is 0.1 MPa. The cutoff ratio for the cycle is 2. Determine (a) the maximum temperature and pressure at the cycle. (b) Determine the thermal efficiency, (c) Determine the mean effective pressure, in atm.
The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and the temperature is 2050 K. Assume constant specific heats evaluated at 300 K. Determine: (a) the compression ratio. (b) the cutoff ratio. (c) the percent thermal efficiency of the cycle. (d) the mean effective pressure, in kPa.
An Otto cycle with the air-standard assumptions (cv=0.717 kJ/kg.K and cp/cv=1.4) has a compression ratio of 10. Before the isentropic compression process, the air is at 1xx kPa, 15°C, and 5yy cm³. The heat transfer to the air per cycle is 1zz0 kJ/kg. The angular speed of the crankshaft for the four-stroke engine is 2xx0 revolutions per minute. Determine (a) the thermal (first law) efficiency, (b) the second law efficiency, (c) the net specific power output of the cycle (in kJ/kg) (d) the mean effective pressure (MEP), (e) the horse power (hp) of the engine Note: You must draw P-V and T-s charts and mark processes to have a score Xx=04, yy=54,zz=84
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 80 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 2150 K. (a) Determine the compression ratio. r = (b) Cutoff Ratio (c) Thermal Efficiency (d) Mean Effective Pressure
MTQ4 The temperature at the beginning of the compression process of an 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
The compression ratio of an air-standard dual cycle is 12, and the pressure at the beginning of compression is 14.7 psia, the volume is 75 in3, and the temperature is 100 F. During the heat-addition processes, 0.4 Btu is transferred at constant volume and 1.0 Btu at constant pressure. Determine: (a) the cycle thermal efficiency (b) the pressure at the beginning of heat rejection.
An ideal Diesel cycle has the air inlet temperature and pressure of 25 °C and 92 kPa respectively. The compression ratio is 18:1 while the maximum cycle temperature is 1,127 °C. Take Specific heat at constant pressure and constant volume for air as 1.008 kJ/kg K and 0.713 kJ/kg K respectively. Calculate the absolute temperature after the isentropic compression process to one decimal place and include the correct unit (absolute temperature). Add units
In a 4-stroke ideal diesel cycle; The cylinder volume is 0.96 liters when the piston is in bottom dead center, and the cylinder volume is 0.06 liters when it is in top dead center. At the beginning of compression, the temperature is T1 = 336 K, P1 = 98 kPa. 1.64 kJ / cycle heat is released as a result of combustion. The mechanical efficiency of the 6-cylinder engine operating at n = 1860 rpm is m = 0.84. Since Cv = 716.5 J / kg K, Cp = 1003.5 J / kg K, R = 287.13 J / kg K; a) Thermodynamic values at the cycle points, b) Effective power of the engine.
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. The Compression Ratio is 23.24 Determine the compression ratio.

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At the beginning of the compression process of an 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 mass flow rate in the system is 1900 kg/hr. Cp = 1.006 kJ/kg K Cv=0.717 kJ/kg K