If the absolute pressure of the air in the cylinder is 14.7 psi at the beginning...
If the absolute pressure of the air in the cylinder is 14.7 psi at the beginning of the compression stroke, and the air pressure at the end of the stroke is 429.8885 an compressed to 15.5:1 of its original volume, what is the polytropic (n) value?
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If the absolute pressure of the air in the cylinder is 14.7 psi
at the beginning...
The pressure at HDC measures 577 psi. Atmospheric pressure is 14.2 psi at the beginning of...
The pressure at HDC measures 577 psi. Atmospheric pressure is 14.2 psi at the beginning of the compression stroke. With a polyropic value of n = 1.35, what is the compression ratio? Show work
A Jaguar XK8 convertible has an eight-cylinder engine. At the beginning of its compression stroke, one...
A Jaguar XK8 convertible has an eight-cylinder engine. At the beginning of its compression stroke, one of the cylinders contains 499 cm3 of air at atmospheric pressure (1.01×105 Pa) and a temperature of 27.0?C. At the end of the stroke, the air has been compressed to a volume of 46.2 cm3 and the gauge pressure has increased to 2.72×10^6 Pa. Calculate the final temperature Tf
A Jaguar XK8 convertible has an eight-cylinder engine. At the beginning of its compression stroke, one...
A Jaguar XK8 convertible has an eight-cylinder engine. At the beginning of its compression stroke, one of the cylinders contains 496 cm3 of air at atmospheric pressure (1.01×105 Pa) and a temperature of 27.0∘C. At the end of the stroke, the air has been compressed to a volume of 47.0 cm3 and the gauge pressure has increased to 2.80×106 Pa . Compute the final temperature. Express your answer in ∘C.
(6). (12 points) A piston-cylinder device contains 0.25 kg of air initially at 1.8 MPa and...
(6). (12 points) A piston-cylinder device contains 0.25 kg of
air initially at 1.8 MPa and 360 °C. The air is first expanded
isothermally to 400 kPa, then compressed polytropically, with a
polytropic exponent of 1.2 to the initial pressure, and finally
compressed at the constant pressure to the initial state. Pease
find: (a) (3p) The boundary work for the isothermal expansion
process. (b) (3p) The boundary work for the polytropic compression
process. (c) (3p)The boundary work for the constant...
11. A 5-L compressed gas cylinder has a pressure of 3000 psi at 25°C. The cylinder...
11. A 5-L compressed gas cylinder has a pressure of 3000 psi at 25°C. The cylinder contains breathing air. If a person is breathing 10 L/min at normal pressure, how many minutes can the person breathe the air in the cylinder? Show your work (5 points)
A piston cylinder device contains air with a volume of 0.05 m3 at 25oC and 100...
A piston cylinder device contains air with a volume of 0.05 m3 at 25oC and 100 kPa pressure. The gas is now compressed to a final temperature of 95oC at 250 kPa. This compression is polytropic and follows PVn=constant. a. Determine how much boundary work was added to the gas [in kJ] b. How much heat was added or removed from this system during this process? [in kJ]
Air in a cylinder with a volume of 500 cm3 is compressed by a piston to...
Air in a cylinder with a volume of 500 cm3 is compressed by a piston to a volume of 150 cm3. If the initial air pressure is 5 x 104 Pa (N/m2), what is the pressure in the cylinder after compression? (Assume that this is a slow process , and that T remains constant.) Pa?
Constants PartA In an internal combustion engine, air at atmospheric pressure and a temperature of about...
Constants PartA In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 °C is compressed in the cylinder by a piston to 5.0 Estimate the temperature of the compressed air, assuming the pressure reaches 38 atm of its original volume (compression ratio 8.0). oC Submit est Ans Provide Feedback
6. A four-cylinder, four-stroke internal combustion engine operates at 3200 RPM. The processes within each cylinder...
6. A four-cylinder, four-stroke internal combustion engine operates at 3200 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.7 lbf/in2, a temperature of 85 °F, and a volume of 0.025 ft at the beginning of compression. The compression ratio is 12, and maximum pressure in the cycle is 1150 lbf/in.2 Determine, using a cold air-standard analysis with k 1.4, the power developed by the engine, in horsepower, and the mean effective...
A gas cylinder containing oxygen has a volume of 10.30 litres. If the cylinder absolute pressure...
A gas cylinder containing oxygen has a volume of 10.30 litres. If the cylinder absolute pressure is 2900 psi at a temperature of 29.00 deg. C what will the absolute pressure be if the temperature is increased to 73.0 deg. C?
(6). (12 points) A piston-cylinder device contains 0.25 kg of
air initially at 1.8 MPa and 360 °C. The air is first expanded
isothermally to 400 kPa, then compressed polytropically, with a
polytropic exponent of 1.2 to the initial pressure, and finally
compressed at the constant pressure to the initial state. Pease
find: (a) (3p) The boundary work for the isothermal expansion
process. (b) (3p) The boundary work for the polytropic compression
process. (c) (3p)The boundary work for the constant...
11. A 5-L compressed gas cylinder has a pressure of 3000 psi at 25°C. The cylinder contains breathing air. If a person is breathing 10 L/min at normal pressure, how many minutes can the person breathe the air in the cylinder? Show your work (5 points)
Constants PartA In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 °C is compressed in the cylinder by a piston to 5.0 Estimate the temperature of the compressed air, assuming the pressure reaches 38 atm of its original volume (compression ratio 8.0). oC Submit est Ans Provide Feedback
6. A four-cylinder, four-stroke internal combustion engine operates at 3200 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.7 lbf/in2, a temperature of 85 °F, and a volume of 0.025 ft at the beginning of compression. The compression ratio is 12, and maximum pressure in the cycle is 1150 lbf/in.2 Determine, using a cold air-standard analysis with k 1.4, the power developed by the engine, in horsepower, and the mean effective...
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