20.5.2. Energy Gradient Line and Hydraulic Gradient Line

Try these first

1. 1.

   Define Energy Gradient Line (EGL).

   Hint

   Think about the energy components we discussed.

2. 2.

   What does Hydraulic Gradient Line (HGL) represent?

   Hint

   Consider what heads are combined for pressure in fluids.

3. 3.

   What does the Energy Gradient Line (EGL) represent?

   • Only potential energy
   • Total mechanical energy in a system
   • Only kinetic energy

   Hint

   Recall the components of energy in fluid systems.

4. 4.

   True or False? The Hydraulic Gradient Line (HGL) is lower than the EGL in all cases.

   • True
   • False

   Hint

   Think about what each line represents.

5. 5.

   Given a pipeline with varying diameters, how would you apply Bernoulli's Equation to determine the pressure drop across a segment?

   Hint

   Remember to factor in both distance and diameter changes.

6. 6.

   Find the friction factor using Moody's chart for a commercial steel pipe with a given Reynolds number.

   Hint

   Interpolation may be necessary if your value falls between two lines.