20.6. Problem Solving Using Bernoulli's Equations

Try these first

1. 1.

   What does Bernoulli's equation relate?

   Hint

   Think about what factors influence fluid movement.

2. 2.

   Define flow rate.

   Hint

   Consider the definition in the context of fluid movement.

3. 3.

   What is the purpose of Bernoulli's equation?

   • To calculate flow rate
   • To relate pressure and velocity
   • To define mass conservation

   Hint

   Recall what the equation includes.

4. 4.

   True or False: A globe valve has lower energy losses than a gate valve.

   • True
   • False

   Hint

   Consider the operational conditions of both valves.

5. 5.

   Calculate the head loss in a horizontal pipe that's 150 m long with a diameter of 0.1 m and a flow rate of 0.03 m³/s, considering friction.

   Hint

   Determine the flow speed and apply the formula accordingly.

6. 6.

   Design a system using a globe valve to achieve a desired flow rate and calculate the expected energy losses throughout the system.

   Hint

   Think about how each component contributes to overall energy usage.