Which equation represents the relationship between static pressure and velocity pressure?

The relationship between static pressure and velocity pressure is correctly represented by the equation that states total pressure equals static pressure plus velocity pressure. This understanding is rooted in the principles of fluid dynamics, where total pressure is defined as the sum of static pressure (the pressure exerted by the fluid regardless of its movement) and velocity pressure (the pressure associated with the motion of the fluid).

In practical terms, total pressure is the pressure that would be measured if a fluid were brought to a stop. Hence, if we know either static pressure or velocity pressure, we can use this relationship to find the other when the total pressure is also known. This equation is fundamental in fields like HVAC (heating, ventilation, and air conditioning) and is crucial for ensuring proper system design and efficiency.

Understanding this relationship allows technicians and engineers to calculate various important parameters in air distribution systems, ensuring that they achieve optimal airflow and system performance.