0063.1 - cylinder The valve is opened air flows into the...

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ME 3322 — Thermodynamics Name: Unit: 3 Level: 3 ID: 0063.1 Date: A pneumatic lift uses a piston-cylinder assembly to raise a load F as shown in the figure. The well-insulated piston-cylinder assembly is connected by a valve to an air supply line that stays at a constant pressure and temperature of 8 bar and 300 K. The load is 10 kN, the piston diameter is 0.2 m, and the atmospheric pressure is 1 bar. Initially, the air in the cylinder is 300 K and the piston is located 0.4 m above the bottom of the

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Unformatted text preview: cylinder. The valve is opened, air flows into the cylinder, the piston rises 20 cm, and then the valve is closed. Determine the final mass and temperature of the air inside the cylinder. Neglect the weight of the piston and friction between the piston and cylinder. Assume that air behaves as an ideal gas with constant specific heats, c p = 1.005 kJ/(kg·K), and R = 0.287 kJ/(kg·K). air supply line valve air F p atm Answer: m 2 = 0.09158 kg and T 2 = 300 K....
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0063.1 - cylinder The valve is opened air flows into the...

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