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Questions and Answers
What is the formula for calculating the force applied on a fluid element by an imaginary piston?
What is the formula for calculating the force applied on a fluid element by an imaginary piston?
Which quantity represents the flow work if a fluid is pushed by a distance L?
Which quantity represents the flow work if a fluid is pushed by a distance L?
What is the flow work at the entrance represented by?
What is the flow work at the entrance represented by?
How is the flow work at the exit, $W_{f2}$, computed?
How is the flow work at the exit, $W_{f2}$, computed?
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Which formula is used to calculate the force applied on a fluid element by an imaginary piston?
Which formula is used to calculate the force applied on a fluid element by an imaginary piston?
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What represents the flow work if a fluid is pushed by a distance L?
What represents the flow work if a fluid is pushed by a distance L?
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How is the flow work at the entrance, $W_{f1}$, computed?
How is the flow work at the entrance, $W_{f1}$, computed?
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What formula is used to calculate the flow work at the exit, $W_{f2}$?
What formula is used to calculate the flow work at the exit, $W_{f2}$?
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How would you calculate the force applied on a fluid element by an imaginary piston?
How would you calculate the force applied on a fluid element by an imaginary piston?
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Which formula represents the flow work if a fluid is pushed by a distance L?
Which formula represents the flow work if a fluid is pushed by a distance L?
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Study Notes
Applications of Engineering Thermodynamics
- Automobile Engines, Turbines, Compressors, and Pumps are some of the selected areas of application of engineering thermodynamics.
- Other areas include propulsion systems for Aircraft and Rockets, Combustion Systems, HVAC Systems, Cooling of Electronic Equipment, and Power Stations.
- Alternative Energy Systems, such as Geothermal, Wind, and Solar, are also included.
- Cryogenic Systems, Energy-efficient Homes, and Biomedical Applications, like Life-support Systems and Artificial Organs, are also areas of application.
Macroscopic and Microscopic Point of View
- Every substance is composed of a large number of molecules.
- The properties of the substance depend on the behavior of these molecules.
- The behavior of a system can be investigated from either a macroscopic (big) or microscopic (small) point of view.
- Statistical thermodynamics is essential for applications involving lasers, plasmas, high-speed gas flows, chemical kinetics, and very low temperatures (cryogenics).
Mechanical Work
- Mechanical work is expressed as a product of force (F) and displacement (s): W = F × s
- If the force is not constant, the work done is obtained by adding the differential amounts of work: W = ∫ F ds
- Pressure difference is the driving force for mechanical work.
Moving Boundary Work
- Moving boundary work is associated with real engines and compressors.
- It is a form of mechanical work that occurs when the piston moves in a frictionless piston-cylinder arrangement.
- The work done is given by: W = ∫ p dV
- Flow work is the work done by the fluid at the entrance and exit of the control volume: Wf = P × A × L = P × V
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Description
Test your knowledge on the various applications of engineering thermodynamics, including automobile engines, turbines, combustion systems, power stations, alternative energy systems, and more.
