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A piston cylinder contains 1 kg of liquid water at 20°C and 300 kPa. There is a linear spring mounted on the piston such that when the water is heated the pressure reaches 3 MPa with a volume of 0.1m^3. Find the final temperature.

A piston cylinder contains 1 kg of liquid water at 20°C and 300 kPa. There is a linear spring mounted on the piston such that when the water is heated the pressure reaches 3 MPa with a volume of 0.1m^3. Find the final temperature. Correct Answer 404°C

State 1: Compressed liquid, take saturated liquid at same temperature. v1 = vf @20°C = 0.001002 m^3/kg State 2: v2 = V2/m = 0.1/1 = 0.1 m^3/kg and P = 3000 kPa Superheated vapor close to T = 400°C Interpolate: T2 = 404°C.

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