True or False: Dynamic pressure losses occur due to changes in direction and velocity of airflow.

Dynamic pressure losses refer to the energy lost due to changes in airflow characteristics, particularly direction and velocity. When air flows through a system, various changes can occur, such as bends, turns, or changes in duct size that cause the airflow to accelerate or decelerate.

These changes in direction and speed lead to turbulence and eddies within the airflow, which ultimately results in a loss of pressure. This phenomenon is crucial in HVAC design because it affects system efficiency and performance. Recognizing that dynamic pressure losses are related to airflow changes helps HVAC professionals design duct systems that minimize these losses, ensuring more effective and efficient air distribution.

The concept of dynamic pressure loss is applicable across various duct types and is not limited to just round ducts or high-speed conditions, which is why other options do not accurately capture this fundamental principle of fluid dynamics in HVAC systems.