Lesson 7 The Energy Equation

## Goals

- Concepts. You can explain/apply key concepts
^{1}: Energy, Work, Power, Pump, Turbine, Shaft Work, Flow Work, KE correction factor, Pump Head, Turbine Head, Head Loss, Efficiency, Head Loss.

- Energy eqn. Your knowledge
^{2}allows you to explain or answer questions about the eqn. You can derive the eqn. You can apply the energy equation to practical problems such as calculating power requirements for a pump, determining pressure drop in a pipe or component, …

- Power Eqn. You can apply the power eqn. to relate head and flow rate.

- Efficiency Eqn. You can apply the efficiency eqn. to relate input power to output power.

- HGL & EGL. You can sketch EGLs & HGLs, explain how and why, explain trends in the sketches.

## Resources

Chapter 7

## Plan to Reach Goals

- Goals. Find reasons to learn the energy eqn or applications that interest you. Write down your own goals.
- KC. Create MEAC sheets for key concepts. Create an ESS for the energy eqn. Write down your questions & bring to class.
- Grid. Do text problem 7.4.
- Setup for Design Problem.
- Design Problem.
- Example Problems. 7.9, 7.26
- Text Problems. 7.9, 7.15, 7.19, 7.27. Apply the SII Process to improve your professional practice.
- Lecture. head, head loss, example 7.32, Power Eqn. Example 7.3
- Text problems 7.34, 7.51
- Lecture. Meta = Limited but deep knowledge. Replacement Picture = Process + F2. Topics = Power Eqn. Head Loss. Head Loss in SE.
- Example Problems. 7.62, 7.63. Solve as a class. Focus on Idea/Planning Step.
- Text Problems 7.60, 7.62. Apply the SII Process to improve your professional practice.
- Answer learning questions about the HGL & EGL.
- Instructor Feedback on KC. Yes! approach.
- Examples or HGL & EGL (pipe from a reservoir; hair dryer)
- Example 7.71 (team); feedback, Example 7.77 (focus on ideas/plan)
- Use the description of quality of a derivation to improve your derivation of the energy equation. Note that your derivation will be problem #1 of exam #3. Bring your derivation to class.
- Text Problems. 7.72, 7.77, 7.80. Use Reflective Thinking (either SII or reflective writing) to learn from your experience.

- Text Problems 7.51, 7.52, 7.53. Apply the SII Process to improve your professional practice.
- Text Problems TBA