Initially a piston-cylinder contains air at p=3.9 bar (absolute) and the contained volume is V =...

 

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Initially a piston-cylinder contains air at p=3.9 bar (absolute) and the contained volume is V = 100 cm at temperature T-303 K. The air is then compressed with a compression ratio r=V/V-5. The polytropic index of compression is n=1.3. Assuming air is an ideal gas, calculate the mass of air contained in the piston-cylinder. Give your answer in g to 2 decimal places. Estimate the net heat transfer from the air to the surroundings. Give your answer in Joules to 2 decimal places. Initially a piston-cylinder contains air at p=3.9 bar (absolute) and the contained volume is V = 100 cm at temperature T-303 K. The air is then compressed with a compression ratio r=V/V-5. The polytropic index of compression is n=1.3. Assuming air is an ideal gas, calculate the mass of air contained in the piston-cylinder. Give your answer in g to 2 decimal places. Estimate the net heat transfer from the air to the surroundings. Give your answer in Joules to 2 decimal places.

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To calculate the mass of air contained in the pistoncylinder and the net heat transfer you can use the ideal gas law and the first law of thermodynami... View the full answer