Lesson Sign-off

This lesson considered the factors which contribute to pressure loss when fluid follows through a pipe or duct system. We examined in detail, the factors which contribute to frictional pressure losses and also losses due to the presence of fittings in the pipeline.

You should now be able to:

  1. Describe the contribution and causes of frictional and fitting pressure losses to the pressure drop in a pipe or duct system.

  2. Apply the Darcy-Weisbach equation and Moody diagram to quantify frictional pressure drop.

  3. Apply the loss coefficient approach to quantify pressure losses due to pipe fittings.

  4. Specify typical design pipe and duct velocities and pressure drops.

A self-assessment lesson will now follow. This will give you the opportunity to determine the level to which you have met these learning outcomes.

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