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Air at a constant pressure in a piston-cylinder is at 300 K, 300 kPa and V=0.1 m^3. It is heated to 600 K in 30 seconds in a process with constant piston velocity. Find the power delivered to the piston.

Air at a constant pressure in a piston-cylinder is at 300 K, 300 kPa and V=0.1 m^3. It is heated to 600 K in 30 seconds in a process with constant piston velocity. Find the power delivered to the piston. Correct Answer 1 kW

Process: P = constant : dW = P dV V2 = V1× (T2/T1) = 0.1 × (600/300) = 0.2 Rate = P (∆V / ∆t) = 300 × (0.2-0.1)/30 = 1 kW.

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