QUESTION 2 (20 MARKS) 57.65-kg of water at 1200 kPa are contained in a piston-cylinder device...

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QUESTION 2 (20 MARKS) 57.65-kg of water at 1200 kPa are contained in a piston-cylinder device whose volume is 10.76 m³. The piston is now moved until the volume is one-third its original size. This is done such that the pressure of the water does not change. CONFIDENTIAL (a) Calculate the specific volumes of water at the initial state (state 1) and the final state (state (2 marks) 2). (b) Identify the phase, temperature, and internal energy of the water at the initial state (state 1). Show all important steps when determining the phase and relevant properties. (6 marks) (c) Identify the phase (with quality if applicable), temperature, and internal energy of water at the final state (state 2). Show all important steps when determining the phase and relevant properties. (6 marks) (d) Calculate the total changes in internal energy between state 1 and state 2. (2 marks) (e) Sketch the T-u phase diagram to illustrate the whole process. Label all the relevant info to (4 marks) show your understanding. QUESTION 2 (20 MARKS) 57.65-kg of water at 1200 kPa are contained in a piston-cylinder device whose volume is 10.76 m³. The piston is now moved until the volume is one-third its original size. This is done such that the pressure of the water does not change. CONFIDENTIAL (a) Calculate the specific volumes of water at the initial state (state 1) and the final state (state (2 marks) 2). (b) Identify the phase, temperature, and internal energy of the water at the initial state (state 1). Show all important steps when determining the phase and relevant properties. (6 marks) (c) Identify the phase (with quality if applicable), temperature, and internal energy of water at the final state (state 2). Show all important steps when determining the phase and relevant properties. (6 marks) (d) Calculate the total changes in internal energy between state 1 and state 2. (2 marks) (e) Sketch the T-u phase diagram to illustrate the whole process. Label all the relevant info to (4 marks) show your understanding.

Answer rating: 100% (QA)

a The specific volume of a substance is defined as the volume of the substance per unit mass To calculate the specific volumes of water at the initial and final states we need to divide the volume of ... View the full answer