The sum of friction head and velocity head is referred to as?

The term that refers to the sum of friction head and velocity head is known as Dynamic Head. This concept is crucial in the field of fluid mechanics and thermodynamics, especially in applications related to refrigeration systems and fluid transport.

Dynamic Head represents the energy associated with the movement and friction of the fluid within pipes or systems. Friction head accounts for the energy losses due to resistance as the fluid flows through a pipe, while velocity head relates to the kinetic energy of the fluid resulting from its velocity. Together, these two components are critical for understanding how effectively a system can transport fluids under various operating conditions.

In refrigeration systems, controlling and evaluating the dynamic head is important for ensuring that the circulatory system operates efficiently, minimizing energy losses and maximizing system performance. This understanding helps operators optimize the design and operation of refrigeration units, ensuring effective cooling or heating in the intended application. The other terms mentioned, such as Static Head, Pressure Head, and Elevation Head, refer to different aspects of fluid energy and do not combine friction and velocity heads in the same manner as Dynamic Head does.