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FAQs on Steady Flow Energy Equation - Thermodynamics - Mechanical Engineering

1. What is the steady flow energy equation?
Ans. The steady flow energy equation is a fundamental concept in thermodynamics that relates the energy transfer in a fluid system undergoing steady flow. It states that the total energy of a fluid flowing through a control volume remains constant, neglecting any external work and heat transfer.
2. How is the steady flow energy equation derived?
Ans. The steady flow energy equation can be derived by applying the first law of thermodynamics to a control volume. By considering the energy transfers due to work, heat, and flow, and neglecting any changes in potential and kinetic energy, the equation is obtained as the balance between the enthalpy, flow work, and heat transfer terms.
3. What are the assumptions made in the steady flow energy equation?
Ans. The steady flow energy equation assumes several conditions to be valid. These include steady flow, neglecting changes in potential and kinetic energy, neglecting any external work and heat transfer, and considering a control volume with no internal energy generation or destruction.
4. How is the steady flow energy equation applied in practice?
Ans. The steady flow energy equation is widely used in engineering and thermodynamics to analyze and design fluid systems. It allows engineers to calculate the energy transfer in various components, such as turbines, compressors, and heat exchangers, and ensures energy conservation is maintained throughout the system.
5. Can the steady flow energy equation be used for compressible fluids?
Ans. Yes, the steady flow energy equation can be applied to compressible fluids as long as certain modifications are made. For compressible flow, the equation includes terms related to changes in specific volume and internal energy, accounting for the variations in density and compressibility of the fluid.
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