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02.03 Work Associated with Flow
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- Chapter 1 - Basic concepts
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Chapter 2 - The energy balance
- 02.01 Expansion/Contraction Work
- 02.03 Work Associated with Flow
- 02.04 Lost Work Versus Reversibility
- 02.06 Path Properties and State Properties
- 02.07 The Closed-System Energy Balance
- 02.08 The Open-System, Steady-State Energy Balance
- 02.09 The Complete Energy Balance
- 02.10 Internal Energy, Enthalpy, and Heat Capacities
- 02.11 Reference States
- 02.13 Energy Balances for Process Equipment
- 02.15 Closed and Steady-State Open Systems
- 02.16 Unsteady State Open Systems
- 02.18 Chapter 2 Summary
- Chapter 3 - Energy balances for composite systems.
- Chapter 4 - Entropy
- Chapter 5 - Thermodynamics of Processes
- Chapter 6 - Classical Thermodynamics - Generalization to any Fluid
- Chapter 7 - Engineering Equations of State for PVT Properties
- Chapter 8 - Departure functions
- Chapter 9 - Phase Equlibrium in a Pure Fluid
- Chapter 10 - Introduction to Multicomponent Systems
- Chapter 11 - An Introduction to Activity Models
- Chapter 12 - Van der Waals Activity Models
- Chapter 13 - Local Composition Activity Models
- Chapter 14 - Liquid-liquid and solid-liquid equilibria
- Chapter 16 - Advanced Phase Diagrams
- Chapter 15 - Phase Equilibria in Mixtures by an Equation of State
- Chapter 17 - Reaction Equilibria
- Chapter 18 - Electrolyte Solutions
Energy and Enthalpy Concepts
Energy and Enthalpy Misunderstandings (LearnChemE.com) (3:20) Three examples related to enthalpy and work changes that are often confusing...
Comprehension Questions:
1. During one stroke of a steam engine, the pressure inside the (~frictionless) cylinder is maintained at 3MPa from a supply line at 500 C while the pressure created by the force on the cam shaft and atmosphere combined is 2.5 MPa. The volume swept by the cylinder during one stroke is 10 L. Compute the work achieved by this process (kJ).
2. Was there any "lost work" in the above process? If so, compute its magnitude (kJ) and explain where those kJ are now.
3. Consider N2 in a closed cylinder with a piston initially at 1 bar and 300K. The system is heated to 400K such that the piston moves to maintain constant pressure. Is it true that Q = Cp dT for this system or should it be Cv dT or something else? Explain using a detailed analysis of the energy balance.