This lesson covers the application of the second law of thermodynamics to various steady flow processes. It provides a detailed explanation of how to calculate the second law efficiency of different devices such as a compressor, a steam turbine, a feed water heater, and a heat engine. The lesson also discusses the concept of exergy and how it can be used to evaluate the performance of these devices. For instance, it explains how to calculate the rate of exergy destruction and the second law efficiency of a compressor. The lesson also provides examples of how to apply these concepts to real-world scenarios, such as determining the mass flow rate of steam required in a feed water heater.

- Steady flow applications are crucial in understanding the workings of various devices like compressors, turbines, and heaters.
- The second law efficiency of a device can be determined by evaluating the rate of exergy destruction and the actual power output.
- Lost work is an important concept that affects the actual work done by a device.
- Thermodynamic cycles like the Rankine cycle, air standard cycle, and vapor compression refrigeration cycle provide insights into the performance of heat engines.

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