What is velocity pressure?

Velocity pressure refers to the pressure built up due to the kinetic energy of moving air in a duct system. When air flows through the duct, it creates a force that is measurable and is directly associated with the speed of the airflow. This pressure is important because it helps to determine how effectively air is transported through the ductwork.

In the context of duct systems, understanding velocity pressure is crucial for designing effective HVAC systems. It plays a key role in calculating airflow rates, system efficiency, and the overall performance of air distribution. Knowing the velocity pressure helps HVAC technicians to ensure that the system is operating within its optimal parameters, providing sufficient airflow to spaces without excessive energy consumption.

Other options refer to different types of pressures or aspects of airflow that do not align with the definition of velocity pressure. The focus here is solely on the pressure generated by moving air, which is a fundamental concept in the study of fluid dynamics within HVAC systems.