Chapter 3: Energy and Power Flashcards
Define Hydraulic Power
Rate of doing work or expanding energy.
Define Hydraulic Energy.
Ability to perform work and energy transfer is the key consideration of operation in Hydraulic System.
Purpose of Prime Mover and Example of Prime Mover.
Delivers Input Energy to a Pump of the Hydraulic System via rotating shaft. Examples are Electric Motor and Internal Combustion Engine.
Purpose of Pump.
Convert Mechanical energy into Hydraulic energy by increasing Fluid’s Pressure and Velocity.
What is the purpose of Hydraulic Circuit.
Control pressure and flow rates throughout the Hydraulic System.
How does Fluid flows to an actuator.
Flow to actuator via Hydraulic Circuit that consists of Pipelines and containing valves and other control components.
What is the purpose of a Actuator.
Convert Hydraulic Energy from the Fluid into Mechanical Energy to drive External Load.
Example of a Actuator.
Motor or Hydraulic Cylinder.
Why does loss of Hydraulic Energy of Fluid occurs and lost in what form.
Due to friction as fluid flows through Pipes, Valves, Fittings and other Control Components as Heat Energy.
Lost Energy will be transferred to where and provide example as evident.
Either the environment or/and into fluid, the increase in Fluid Temperature as evident.
Are the lost energy useful and how.
No, Heat energy is not available to perform useful work.
Define Conservation of Energy Law and Express by equation.
Energy can be neither created nor destroyed. Equation: Input Mechanical Energy - Lost Heat Energy = Output Mechanical Energy.
How to determine Power Output.
Requirements of external load and speed of work must be done.
What is kind of system is Hydraulic System.
Energy Transfer System.
Define Three Laws of Motion that Sir Isaac Newton Formulated dealing with the effect a force has on a body.
A force is required to change the motion of a body. Secondly, if a body is acted on by a force, the body will have an acceleration proportional to the magnitude of the force and inverse to the mass of the body, and lastly, if one body exerts a force on a second body, the second body must exert an equal but opposite force on the first body.
