Question

3. (40 pts.) A vertical cylinder fitted with a frictionless piston contains 10 kg of Water at 0.1 MPa and x = 40%. The system is heated by an external source at 227°C until the specific volume reaches 2.24 m3/kg. The weight of the piston is such that it takes a water pressure of 0.2 MPa for it to start rising 4 (a) Identify the system and draw its boundary (b) Sketch and annotate the overall process on a P-v diagram (c) Calculate the o (d) Calculate the overall heat transfer (k) and indicate its sign (e) Calculate the net change of entropy for the overall process (kl/K) (f) Is this process possible? Why or why not? 5 Cv, verall work (k) and indicate its sign H20 0 Table is provided for your convenience 2 40 100

Answer 1

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