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Problem 1: One kg of water is placed inside a well-insulated piston. The external pressure PE is being held a constant value of 10 MPa. Heat is being supplied to the water through a heater. The heat is being added slowly to the water so the piston expansion process can be assumed as a reversible process. The temperature of the water is at 20°C before the heating (initial state). The final water temperature reaches 400°C℃ after the heating. a) What is the phase of water at the initial and at the final state, respectively? b) Please determine the volume of the 1kg of water at the initial state and at the final state, respectively. c) Please determine the work done, W[kJ], by the piston; the change in internal energy, AU [kJ], of the system; and the heat transferred, Q [kJ]; for this process. Please plot Q [kJ] vs. T [°C] for this process (from initial T to final T). you can use excel to plot this graph P=10 MPa 1 kg water

Problem 1: One kg of water is placed inside a well-insulated piston. The external pressure PE is being held a constant value of 10 MPa. Heat is being supplied to the water through a heater. The heat is being added slowly to the water so the piston expansion process can be assumed as a reversible process. The temperature of the water is at 20°C before the heating (initial state). The final water temperature reaches 400°C℃ after the heating. a) What is the phase of water at the initial and at the final state, respectively? b) Please determine the volume of the 1kg of water at the initial state and at the final state, respectively. c) Please determine the work done, W[kJ], by the piston; the change in internal energy, AU [kJ], of the system; and the heat transferred, Q [kJ]; for this process. Please plot Q [kJ] vs. T [°C] for this process (from initial T to final T). you can use excel to plot this graph P=10 MPa 1 kg water

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Problem 1: One kg of water is placed inside a well-insulated piston. The external pressure PÅ is being held a constant value of 10 MPa. Heat is being supplied to the water through a heater. The heat is being added slowly to the water so the piston expansion process can be assumed as a reversible process. The temperature of the water is at 20°C before the heating (initial state). The final water temperature reaches 400°C after the heating. a) What is the phase of water at the initial and at the final state, respectively? b) Please determine the volume of the 1kg of water at the initial state and at the final state, respectively. c) Please determine the work done, W[kJ], by the piston; the change in internal energy, AU [kJ], of the system; and the heat transferred, Q [kJ]; for this process. Please plot Q [kJ] vs. T [°C] for this process (from initial T to final T). you can use excel to plot this graph P=10 MPa 1 kg water www
Transcribed Image Text:Problem 1: One kg of water is placed inside a well-insulated piston. The external pressure PÅ is being held a constant value of 10 MPa. Heat is being supplied to the water through a heater. The heat is being added slowly to the water so the piston expansion process can be assumed as a reversible process. The temperature of the water is at 20°C before the heating (initial state). The final water temperature reaches 400°C after the heating. a) What is the phase of water at the initial and at the final state, respectively? b) Please determine the volume of the 1kg of water at the initial state and at the final state, respectively. c) Please determine the work done, W[kJ], by the piston; the change in internal energy, AU [kJ], of the system; and the heat transferred, Q [kJ]; for this process. Please plot Q [kJ] vs. T [°C] for this process (from initial T to final T). you can use excel to plot this graph P=10 MPa 1 kg water www
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