Engine Aircraft Turboprop engine with free power turbine has the following data:H = 6 kmin, = 3= 15 kg/sT₁ = 249 KP₁ = 47.2 kPaMo = 0.6P04 = 9.96P0374 = 0.95C.C= 0.98g=0.95CPc1.01 kJ/kg KQR = 43.000 kJ/kgPol=6PozTo4 = 1120 Knc = 0.87' = IFPT = D =0.97PY=0.8CP₁ = CPT=Cp.= 1.14 kJ/kg KThe power in the gases leaving the gas generator turbine is divided between the free powerturbine and the nozzle based on the optimum condition a = dopt. Calculate the ESHP and.the ESFC.

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Answered: Turboprop engine with free power…

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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The Fifth Question: A six-cylinder, 4-stroke petrol engine develops 62 H.P at 3000 r.p.m. The volumetric efficiency at N.T.P. is 85%. The bore is equal to the stroke and thermal efficiency of 25 % may be assumed. Calorific value of petrol is 44100 kj/kg. Air-fuel ratio is to be 15:1. Calculate the cylinder bore and stroke.
Complete the Carnot cycle performed by air if the parameters in points 1 and 3 are the following: Point 1: P_1=2MPa, T_1=600kPoint 3: P_2=120 KPa, T_2= 300K R=287 J/(Kg K)-air only. Please type answer no write by hend.
John’s automobile has a three-liter SI-V6 engine that operates on a four-stroke cycle at 3600 RPM. The compression ratio is 9.5, the length of connecting rods is 16.6 cm, and the engine is square (B=S). at this speed, combustion ends at 20o at T.D.C. This engine is connected to Dynamometer which gives a brake output torque reading of 205 N-m. At his speed, air enters the cylinders at 85 kPa and 60o C, and the mechanical efficiency of the engine is 85%. Calculate: (a) Brake power, HP || (b) Indicated Power, HP || (c) Brake Mean Effective Pressure, Bmep , Psia || (d) Indicated Mean Effective Pressure, Imep, Psia || (e) Friction Mean Effective Pressure, Fmep, Psia
In a diesel engine, r=18, α=2.8, T1=336 K, P1=100 kPa, Vh=740 cm3. The polythropic exponent in the compression process is nc=1.32 and the polythropic exponent in the expansion process is ne=1.36. The speed is n=2100 rpm and the number of cylinders is 6. Cp=1.0035 kJ/kgK, R=0.287 kJ/kgK, lower heating value of the fuel Hu=42.636 Mj/kg, combustion efficiency ɳc=0.96. a) Find the thermodynamic coordinates of the cycle. b) Find the indicated work and power. c) Find the amount of fuel the engine will consume per hour. d) If the cycle took place in an adiabatic state change: what would be the highest pressure and temperature in the cycle? Calculate.
COMBUSTION ENGINEERING In an air-standard Otto cycle engine, the following data were obtained: k = 1.4 , C, = 1.0045 ,C, = 0.7175 , P1 = 103 kPa , t, = 26°C, t2 = 414°C, tz = 2527°C, kgK kg-K t4 = 945.8°C. To be done: a. Find the compression ratio r. A. 6,5 В. 7 C. 7.5 D. 8.0 E. None of these b. Find the pressure at the end of the compression stroke p2. А. 1804 КРа В. 1894 КРа С. 1994 КPа D. 2004 КРа c. Find the pressure at the end of heat addition. A. 7700 kPa B. 7719 kPa C. 8019 kPa D. 8800 kPa E. None of these d. Find the pressure at the end of the expansion stroke P4. A. 410 kPa В. 420 kPa C. 8019 kPa D. 460 kPa E. None of these e. Find the Heat added qa to the cycle, in kJ/kg air. A. 1615 kJ/kg C. 1555 kJ/kg E. None of these B. 1575 kJ/kg D. 1516 kJ/kg f. Find the work of the cycle wey, in kJ/kg air. A. 866.1- kg air B. 877.1 k) kg air C. 880.2- D. 900- E. None of these kg air E. None of these kg air Page 1 of 2 g. Calculate the cycle efficiency for the cycle, in percent. A. Ncy =…
5. A 6-cylinder reciprocating engine operates on air-standard Diesel cycle, each cylinder having 115 mm bore and 125 mm stroke and a speed of 2000 rpm. The temperature and pressure at the beginning of compression stroke are 300 K and 100 kPa respectively and the maximum temperature permitted is 1650 K. The clearance volume is one-eighth of the stroke volume. Assume air as an ideal gas with Cp = 1.005 kJ/kg K and Cy = 0.718 kJ/kg K. Calculate: (a) The compression ratio (b) The temperature and pressure after compression
5. A 6-cylinder reciprocating engine operates on air-standard Diesel cycle, each cylinder having 115 mm bore and 125 mm stroke and a speed of 2000 rpm. The temperature and pressure at the beginning of compression stroke are 300 K and 100 kPa respectively and the maximum temperature permitted is 1650 K. The clearance volume is one-eighth of the stroke volume. Assume air as an ideal gas with Cp = 1.005 kJ/kg K and Cy = 0.718 kJ/kg K. Calculate: (c) The thermal efficiency (d) The power output from the engine.
5. A 6-cylinder reciprocating engine operates on air-standard Diesel cycle, each cylinder having 115 mm bore and 125 mm stroke and a speed of 2000 rpm. The temperature and pressure at the beginning of compression stroke are 300 K and 100 kPa respectively and the maximum temperature permitted is 1650 K. The clearance volume is one-eighth of the stroke volume. Assume air as an ideal gas with Cp = 1.005 kJ/kg K and Cy = 0.718 kJ/kg K. Calculate: (a) The compression ratio (b) The temperature and pressure after compression (c) The thermal efficiency (d) The power output from the engine.
You have been asked to help with the low-pressure compressor (LPC) design for a turbofan engine with a bypass ratio of 8.4. The preliminary cycle design calls for the LPC to produce a pressure ratio of 9.4 with the following operating conditions and constraints. .Inlet Conditions TO2 Poz Core Air Mass Flowrate (kg/s) (K) (kPa) 282 24.6 47.0 Design Constraints Maximum Polytropic Efficiency 94.1% Maximum Stage Pr 1.55 Estimate the minimum number of stages required for this LPC. Then assuming the 1st stage of the LPC operates at the maximum allowable pressure ratio, determine the stagnation temperature exiting the 1st stage, and the stage's adiabatic efficiency. Also determine the power (W) required to operate the full LPC (not just 1st stage). Finally, what would be the percent change in the required power if the polytropic efficiency was only 90.0%.
An air-standard dual cycle has a compression ratio of 8.6 and displacement of Vd = 2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 4.5 kJ, with one quarter added at constant volume and the rest added at constant pressure. T2 = 670K T3 = 1152K T4 = 2139 K T5 = 1339K FIND: 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.
Calculate the percentage loss in the ideal efficiency of a diesel engine withcompression ratio 14 if the fuel cut-off is delayed from 5% to 8%
A pickup truck has a five-liter, V6, SI -1 engine operating at 2400 RPM. The compression ratio rc = 10.2:1, the volumetric efficiency = 0.91, and the bore and stroke are related as stroke S = 0.92 B. The Stroke * -:length will be

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