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During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to...
18-3 During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm...
18-3 During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to 20.5 atm. The process is adiabatic and the air–fuel mixture behaves as a diatomic ideal gas. (a) By what factor does the volume change? Vfinal = Vinitial (b) By what factor does the temperature change? Tfinal = Tinitial Assume the compression starts with 0.016 mole of gas at 26.0°C. (c) Find the value of Q that characterizes the process. J (d) Find the value of...
A diesel engine with a compression ratio of 14.5 starts the compression stroke with air at...
A diesel engine with a compression ratio of 14.5 starts the compression stroke with air at 101 kPa and 42ºC. Fuel with a heating value of 43,260 kJ/kg is used with a fuel/air ratio of 0.03 kg fuel/kg air. At full throttle the airflow to engine is measured to be 0.1 m3/s and 5% of the fuel does not burn due to poor fuel-air mixing. Model the engine as airstandard with variable specific heats, draw the cycle on a P-V...
An ideal gas undergoes an adiabatic compression from p = 1.00 atm, V = 1.00 x...
An ideal gas undergoes an adiabatic compression from p = 1.00 atm, V = 1.00 x 106 L T = 0.00°C to p = 1.00 x 10s atm, V = 1.00 x 103 L. (a) Is the gas monatomic, diatomic, or polyatomic? (b) What is its final temperature? (c) How many moles of gas are present? What is the total translational kinetic energy per mole (d) before and (e) after the compression? (f) What is the ratio of the squares...
1. In the compression stroke of a gas engine, the work done on the gas by...
1. In the compression stroke of a gas engine, the work done on the gas by the piston is 70 kJ/kg, and the heat rejected to the cooling water is 42 kJ/kg. Calculate lthe change of specific internal energy, stating whether it is a gain or a loss. 2. A closed system undergoes 5 separate processes. These processes are summarised in the following table Q (kJ) E, (kJ) 20 50 Process E, (kJ) AE (k 50 20 -20 80 90...
Given a four stroke, four-cylinder engine. Bore = 2.95, Stroke = 3.1, compression ratio = 9.1....
Given a four stroke, four-cylinder engine. Bore = 2.95, Stroke = 3.1, compression ratio = 9.1. RPM =3500, fuel consumption rate = 2 Gallons/hour, heating value = 114,000 Btu/gallon Assuming ambient conditions of T = 537 R and P = 14.7 psia. You will get multiple ratings if solved correctly. Thank you Find: (a) the total volume V(BDC) for all cylinders (b) mass of air, and (c) specific heat input (q) in Btu/lbm
Q5. An efficiency consultant is studying the power stroke of a four-stroke engine and determines the following: As the...
Q5. An efficiency consultant is studying the power stroke of a
four-stroke engine and determines the following:
As the piston is forced down, the mixture of combustion
products and air undergoes an adiabatic expansion.
The engine is running at 3,100 cycles/min.
The gauge pressure immediately before the expansion is 25.0
atm.
The volumes of the mixture immediately before and after the
expansion are 50.0 cm3 and 400 cm3,
respectively (figure below).
The time interval for the expansion is one-fourth the...
A gas is compressed from an initial volume of 5.75L to a final volume of 1.24 L by an external pressure of 1.00 ATM...
A gas is compressed from an initial volume of 5.75L to a final volume of 1.24 L by an external pressure of 1.00 ATM. During the compression the gas releases 125 J of heat. What is the change in internal energy of the gas?
A gas is compressed from an initial volume of 5.75L to a final volume of 1.24 L by an external pressure of 1.00 ATM...
A gas is compressed from an initial volume of 5.75L to a final volume of 1.24 L by an external pressure of 1.00 ATM. During the compression the gas releases 125 J of heat. What is the change in internal energy of the gas?
1)A gas is compressed at a constant pressure of 0.800 atm from 8.00 L to 1.00...
1)A gas is compressed at a constant pressure of 0.800 atm from
8.00 L to 1.00 L. In the process, 410 J of energy leaves the gas by
heat. (a) What is the work done on the gas? J
(b) What is the change in its internal energy? J
2) A gas increases in pressure from 2.00 atm to 6.00 atm at a
constant volume of 1.00 m3 and then expands at constant
pressure to a volume of 3.00 m3...
Please help me about Physics, Thanks. A sample of 1.00 mole of a diatomic ideal gas...
Please help me about Physics, Thanks. A sample of 1.00 mole of a
diatomic ideal gas is intially at temperature 265K...........
Thermodynamic Processes involving Ideal Gases-in-class worksheet-(5 points) PHYS 181 Question B (B.) A sample of 1.00 mole of a diatomic ideal gas is initially at temperature 265 K and volume 0.200 m. The gas first undergoes an isobaric expansion, such that its temperature increases by 120.0 K. It then undergoes an adiabatic expansion so that its final volume is...
An ideal gas undergoes an adiabatic compression from p = 1.00 atm, V = 1.00 x 106 L T = 0.00°C to p = 1.00 x 10s atm, V = 1.00 x 103 L. (a) Is the gas monatomic, diatomic, or polyatomic? (b) What is its final temperature? (c) How many moles of gas are present? What is the total translational kinetic energy per mole (d) before and (e) after the compression? (f) What is the ratio of the squares...
1. In the compression stroke of a gas engine, the work done on the gas by the piston is 70 kJ/kg, and the heat rejected to the cooling water is 42 kJ/kg. Calculate lthe change of specific internal energy, stating whether it is a gain or a loss. 2. A closed system undergoes 5 separate processes. These processes are summarised in the following table Q (kJ) E, (kJ) 20 50 Process E, (kJ) AE (k 50 20 -20 80 90...
Q5. An efficiency consultant is studying the power stroke of a
four-stroke engine and determines the following:
As the piston is forced down, the mixture of combustion
products and air undergoes an adiabatic expansion.
The engine is running at 3,100 cycles/min.
The gauge pressure immediately before the expansion is 25.0
atm.
The volumes of the mixture immediately before and after the
expansion are 50.0 cm3 and 400 cm3,
respectively (figure below).
The time interval for the expansion is one-fourth the...
1)A gas is compressed at a constant pressure of 0.800 atm from
8.00 L to 1.00 L. In the process, 410 J of energy leaves the gas by
heat. (a) What is the work done on the gas? J
(b) What is the change in its internal energy? J
2) A gas increases in pressure from 2.00 atm to 6.00 atm at a
constant volume of 1.00 m3 and then expands at constant
pressure to a volume of 3.00 m3...
Please help me about Physics, Thanks. A sample of 1.00 mole of a
diatomic ideal gas is intially at temperature 265K...........
Thermodynamic Processes involving Ideal Gases-in-class worksheet-(5 points) PHYS 181 Question B (B.) A sample of 1.00 mole of a diatomic ideal gas is initially at temperature 265 K and volume 0.200 m. The gas first undergoes an isobaric expansion, such that its temperature increases by 120.0 K. It then undergoes an adiabatic expansion so that its final volume is...
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