Understanding Airflow

2. What is the main obstacle to airflow?

3. In high-friction situations, energy gets ________________.

4. What is the total pressure of an HVAC system?

5. Pressure is always in balance ____________________.

6. Why is the "used car lot" relevant to the topic?

7. True or False: You can build a manometer with a small U-shaped tube and some water to measure inches of water column.

8. ___________________ measure static pressure, and ____________________ measure velocity.

9. The air on the edge of the duct (near the surface) is _________________ the air closer to the center of the duct.

10. The initial static pressure budget (in inches of water column) that we use for duct design is determined by the _____________.