Unformatted text preview: a rigid, well insulated tank until only saturated vapor remains. Determine the amount of energy transfer by work, if the volume of tank is 1 m 3 and the initial pressure is equal to 100 kPa. Problem 4. (25 points) A 1-m long sealed cylindrical tank is divided in half by a piston with negligible weight. The top and bottom sections are filled with argon with P = 100 kPa and T = 300 K. The top section is gradually heated to 900 K. The bottom section is maintained at 300 K. Find the resulting displacement x of the piston. Closed System First Law: net net W Q U − = Δ Ideal Gas Relations: M R RT Pv mRT PV u = = = Quality relations: total g m m x = fg f xh h xu xv v + = + = + = Energy Efficiency: total in useful out total in useful out Power Power E E / / / / = = η 1 m x...
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- Spring '08
- Thermodynamics, Mass flow rate, 1-m