i. ii. iii. A rigid and sealed tank contains pressurised and heated air at a gauge pressure of 900 kPa and temperature of 200 °C. The tank does not have any thermal insulation and is left in an environment with pressure of 100 kPa and temperature of 25 °C. Assuming that the tank has been in contact with the environment for a long time, answer the following questions: What is the mass of the air inside the tank? How much heat has been transferred from the tank to the environment? Sketch the P-V diagram of this cooling process? [3] [3] [2]
i. ii. iii. A rigid and sealed tank contains pressurised and heated air at a gauge pressure of 900 kPa and temperature of 200 °C. The tank does not have any thermal insulation and is left in an environment with pressure of 100 kPa and temperature of 25 °C. Assuming that the tank has been in contact with the environment for a long time, answer the following questions: What is the mass of the air inside the tank? How much heat has been transferred from the tank to the environment? Sketch the P-V diagram of this cooling process? [3] [3] [2]
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![i.
ii.
iii.
A rigid and sealed tank contains pressurised and heated air at a gauge pressure
of 900 kPa and temperature of 200 °C. The tank does not have any thermal
insulation and is left in an environment with pressure of 100 kPa and
temperature of 25 °C.
Assuming that the tank has been in contact with the environment for a long time,
answer the following questions:
What is the mass of the air inside the tank?
How much heat has been transferred from the tank to the environment?
Sketch the P-V diagram of this cooling process?
[3]
[3]
[2]
Note: the solution of this question requires the value of R (0.287 kJ/kg K) and
Cv (0.7 kJ/kg K) for air.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe875a456-3d0b-4a51-88f1-95129dcab190%2F2b317bcf-ce6a-436c-b1c6-2298df766294%2Fkwql1y_processed.jpeg&w=3840&q=75)
Transcribed Image Text:i.
ii.
iii.
A rigid and sealed tank contains pressurised and heated air at a gauge pressure
of 900 kPa and temperature of 200 °C. The tank does not have any thermal
insulation and is left in an environment with pressure of 100 kPa and
temperature of 25 °C.
Assuming that the tank has been in contact with the environment for a long time,
answer the following questions:
What is the mass of the air inside the tank?
How much heat has been transferred from the tank to the environment?
Sketch the P-V diagram of this cooling process?
[3]
[3]
[2]
Note: the solution of this question requires the value of R (0.287 kJ/kg K) and
Cv (0.7 kJ/kg K) for air.
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