Q-4 An air standard Diesel cycle that has acompression ratio of 18and the cut off ratio of 2.1. At the beginning of the compressionProcess, the temperature, pressure and volume are 300k, lookpa and0.005m³ respectively. Calculate ①maximum pressureThe temperature at the end of adiabatic expansion 3 workmean effective pressure.For air take Cp = 1.0035 kj/kg.k and R = 0.287 Ki/kg kdone

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Answered: Q-4 An air standard Diesel cycle that…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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A turbojet aircraft moving with a velocity of 790 ft/s at a runway where the pressure& temperature is found to be 14.7psi & 546R. The axial flow compressor provides apressure ratio of 14 to 1. Temperature at the turbine inlet is 2000R. The mass flowrate of airinside the engine is 133 lbm/s. Determine the following:a. T-S diagramb. Pressure & temperature at each statec. Thrust force (lbf)d. Propulsive power developed (BTU/min)e. Propulsive Efficiency
Consider an air standard Diesel cycle. At the beginning of compression, the temperature is 300 K and the pressure is 101.35 kPa. If the compression ratio is 15 and during the process 1860 kJ/kg of air as added as heat, calculate the following: The maximum cycle pressure a. 3726 kPa b. 1109 kPa The maximum cycle temperature a. 1680 K b. 2740 K The thermal efficiency of the cycle a. 55% b. 50% .The MEP a. 2600 kPa b. 800 kPa c. 5890 kPa d. 4495 kPa c. 60% d. 45% c. 3300 K d. 4050 K c. 1300 kPa d. 2900 kPa
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The compression ratio of an Otto cycle is 8, at the beginning of the zanthropic compression process, the pressure of the air is 100 kPa, the temperature is 27 "C, the volume is 550 cm. At the end of the lzantropic expansion process, the temperature of the air is 700 K. Using the specific temperature values at room temperature (according to the cold air standard assumptions) Find the gravity of the air.
A The compression ratio of a diesel cycle is 15.5, and the cutoff occurs at 10% of the stroke. 14 psia and 600 K characterize state 1. Calculate the following for the hot-air standard with k= 1.34 and a starting volume of 2 cu ft: Qin a. Find T2 , P2 , V2 , T3 , V3 , P4 , and T4 3 P = P, b. Compute the heat added (QA), Wout heat rejected (Qr), work (W) and the cycle efficiency (e). P. c. for a rate of circulation of 1000 cfm, Qout compute the horsepower.
1. At the beginning of the compression process in a hot-air-standard Otto cycle, the air is at 100 kPa and 300° K. The heat added to the air is 0.750 and r= 5. Kgm-K If c,=718 and K=1.38, calculate the pressure, temperature and volume at 790 the cardinal pcints. Also compute heat transfer and work done per Kg of air for each precess and the cycle thermal efficiency.
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14. Horsepower produced if engine is 4 stroke type and has 2 cylinders 15. Mean Effective PRessure
Compute the mean effective pressure in kPa and thermal efficiency of an air standard Otto cycle that has a compression ratio of 12. When the compression commences the pressure and temperature of air are 130 kPa and 299K, correspondingly. The heat added is 1750 KJ/kg. Also, find the four-cycle state points.
ηTH?
In a C.I. engine working on the dual combustion cycle the compression ratio is 12.5:1. Air at 101.3kPa and 35°C is compressed adiabatically. Fuel is then added until the pressure reaches 4000kPa, then at constant pressure to a temperature of 1425°C. After adiabatic expansion to the initial volume exhaust takes place. Calculate: (a). work done/kg air (b). thermal efficiency

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