possible.
- There Are Multiple Parts Per Question Please Be As Clear As Possible 1 (52.72 KiB) Viewed 13 times
There are multiple parts per question, please be as clear as possible.
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answerhappygod
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There are multiple parts per question, please be as clear as possible.
There are multiple parts per question, please be as clear as
possible.
5: A piston cylinder device initially contains 3.7L of air at 133 kPa and 28 C. Air is now compressed to a final state of 825 kPa and 237 C. The useful work input is 1.9 kJ. Assume the surroundings are at 115kPa and 15 C. The gas constant of air is R = 0.287 kPa.m³/kg.K. The specific heats of air at the average temperature of 355 K are cp = 1.009 kJ/kg K and c= 0.722 kJ/kg.K. a. Determine the entropy change per unit mass, (S2 - So). b. Determine the volume change per unit mass, (v2- Vo). c. Determine the exergy of the air at the initial and the final states. d. Determine the minimum work that must be supplied to accomplish this compression process. e. Determine the second law efficiency of this process. ↓ Air
possible.
5: A piston cylinder device initially contains 3.7L of air at 133 kPa and 28 C. Air is now compressed to a final state of 825 kPa and 237 C. The useful work input is 1.9 kJ. Assume the surroundings are at 115kPa and 15 C. The gas constant of air is R = 0.287 kPa.m³/kg.K. The specific heats of air at the average temperature of 355 K are cp = 1.009 kJ/kg K and c= 0.722 kJ/kg.K. a. Determine the entropy change per unit mass, (S2 - So). b. Determine the volume change per unit mass, (v2- Vo). c. Determine the exergy of the air at the initial and the final states. d. Determine the minimum work that must be supplied to accomplish this compression process. e. Determine the second law efficiency of this process. ↓ Air