Question

In: Mechanical Engineering

the sources of energy loss contained in fluid power system can include A) fluid viscosity B)...

the sources of energy loss contained in fluid power system can include

A)

fluid viscosity

B)

the configuration of valves and fittings

C)

piping materials

D)

all of the above

Solutions

Expert Solution

Answer -

D) All of the above

  • The resistance to flow is essentially a measure of the viscosity of a fluid. The greater the viscosity of a fluid, the less readily it flows and the more is the energy required to move it. This energy is lost because it is dissipated as heat.
  • For many fluid power applications, the majority of the energy losses occur in valves and fittings in which there is a change in the cross-section of flow path and a change in the direction of the flow.
  • Piping material decides the relative roughness of pipe. Darcy’ equation can be used to find head losses in pipes experiencing turbulent flow. However, the friction factor in turbulent flow is a function of Reynolds number and the relative roughness of the pipe.

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