This lesson covers the application of thermodynamics principles to solve practical problems. It delves into the concepts of control volume, steady state operation, energy changes, and entropy changes. The lesson uses a detailed example of a problem involving the flow of air through a pipe at varying pressures, temperatures, and velocities. It explains how to calculate the exit temperature, velocity of the air, and the entropy change for the control volume. The lesson also discusses the concept of isentropic efficiency and how it impacts the entropy change in a system.

- The concept of control volume is crucial in understanding fluid dynamics and thermodynamics.
- The exit temperature and velocity of air can be calculated using the principles of steady state operation and energy changes.
- The entropy change for a control volume can be determined using the rate of entropy change and the mass flow rate.
- In an insulated nozzle, the exit velocity and state of steam can be calculated using the isotropic efficiency and the first law of thermodynamics.

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