Q7 The initial condition for an air-standard Otto cycle operating with acompressionratio of (8:1) are (0.95bar) and (17 °C). At the beginning of the compressionstroke, the Cylinder volume is (3.8 103 m³) and (7.5Kj) of heat are added to thegas. Calculate the Pressure and temperature at the end of each process anddetermine the thermal efficiency and mean effective pressure of the cycle.

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Answered: Q7 The initial condition for an…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Q-4 An air standard Diesel cycle that has acompression ratio of 18 and the cut off ratio of 2.1. At the beginning of the compression Process, the temperature, pressure and volume are 300k, lookpa and 0.005m³ respectively. Calculate ①maximum pressure The temperature at the end of adiabatic expansion 3 work mean effective pressure. For air take Cp = 1.0035 kj/kg.k and R = 0.287 Ki/kg k done
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.
Instead, assume variable specific heat An ideal Diesel cycle has a compression ratio of 17and a cutoff ratio of 1.3. Determine the maximum tempera-ture of the air and the rate of heat addition to this cycle whenit produces 140 kW of power and the state of the air at thebeginning of the compression is 90 kPa and 578C. Use con-stant specific heats at room temperature
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.
Q3: An Otto cycle has a compression ratio of (8.5) at the beginning of the com. Press ion stroke, the temperature is (300K) and the pressure is (90KPa). If the heat input is (800Kj) and the maximum temperature in the cycle is 1100K, determine (a) The mass of air in the cycle. (b)The heat rejection. (c) thermal efficiency. (d) The mean effective pressure.
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
Q3:A small truck has #cylinder ,4 liter compression ignition engine that operates on irstandard Dual cycle with air fuel ratio of 16:1, the compression ratio is 17 and the cylinderdiameter is 14.5Cm. At the start of compression stroke Ta=5O'C and Pa=100 kpa .It can beassumed the half of the heat input is added at constant volume and halt at constant pressureCalculate:-Temperature and pressure at each state of the cycle. -Indicated thermal efficiency.
1.) The ratio of the pressures in an Ericsson Cycle is 8. Determine the Thermal Efficiency in % 2.) The compression ratio of a Stirling Cycle is 11. What is the thermal efficiency in %? 3.) The compression ratio of a Stirling Cycle is 4. Heat is rejected at 90C. What is the highest temperature in the cycle in Celcius? ANSWER SHOULD BE ROUND OFF IN SIX SIGNIFICANT FIGURES
Plz solve in 45min
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
art Il: Power Cycles & Fluid Assume an Otto cycle with compression ratio of CR = 9 1. The intake air is at 100kPa, 20°C, and the volume of the chamber is 500cm prior to the compression stroke. The temperature at the end of the adiabatic expansion is T. 800K. If air specific heat capacity at constant pressure of air at atmospheric pressure and room temperature is c 1.01KJ/kgK Specific heat capacity at constant volume of air at atmospheric pressure and room temperature: Cy = 0.718KJ/kgK Calculate: (i) the mass of the intake air (ii) the temperature T3, (iii) the pressure pa, (iv) the amount of heat added by burning fuel-air mixture (v) the thermal efficiency of the cycle;B (vi) the mean effective pressure (MEP).

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