Question

Steam at 5 MPa and 400°C expands polytropically to 1.0 MPa according to pV1.3 = C. Determine the work of nonflow and steady flow, the heat transferred, ∆h, and ∆s. Ans. 298.9 kJ/kg, 388.6 kJ/kg, -7.6 kJ/kg. -396.2 kJkg, -0.0127 kJ/kg•K.