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Physical Properties of Hydraulic and Pneumatic Fluids

Physical Properties of Hydraulic and Pneumatic Fluids. Mohammad I. Kilani Mechatronics Engineering Department University of Jordan. Introduction.

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Physical Properties of Hydraulic and Pneumatic Fluids

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  1. Physical Properties of Hydraulic and Pneumatic Fluids Mohammad I. Kilani Mechatronics Engineering Department University of Jordan

  2. Introduction • The transfer of power and energy is a key consideration in hydraulic systems. As seen in Chapter 1, a hydraulic power transmission system may be considered as a back-to-back converter. • A pump converts mechanical energy from a prime mover such as an electric motor or internal combustion engine into hydraulic energy by increasing the pressure of the fluid. The fluid flows to an actuator via a hydraulic circuit that consists of pipeline containing valves other control components. The actuator converts hydraulic energy back to mechanical energy to drive an external load. Hydraulic Cylinder F x v Electric Motor Hydraulic Pump P x Q V x I T x ω Hydraulic Motor T x ω

  3. F 2 kN L Example Hydraulic System: Hydraulic Jack

  4. F 2 kN L Example Hydraulic System: Hydraulic Jack

  5. Example Hydraulic System: Hydraulic Jack

  6. Example Hydraulic System: Pressure Intensifier (Booster)

  7. Example Hydraulic System: Pressure Intensifier (Booster)

  8. F 2 kN L Continuity Equation (Conservation of Mass)

  9. F 2 kN L Bernoulli Equation (Conservation of Mechanical Energy)

  10. Example: Flow in a reducing section

  11. Example: Automobile Gas Tank

  12. Frictional Losses in Pipelines

  13. Frictional Losses in Pipelines: Laminar Flow

  14. Frictional Losses in Pipelines: Fully Turbulent Flow

  15. Frictional Losses in Pipelines: Transition Region Flow

  16. Frictional Losses in Pipelines: The Friction Factor

  17. Frictional Losses in Pipelines: The Friction Factor

  18. Frictional Losses in Pipelines: Transition Region Flow

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