What does the total dynamic head of a pump include?

The total dynamic head (TDH) of a pump is a critical measure that encompasses all the factors affecting the hydraulic performance of the pump system. This includes the vertical lift required to move the fluid, the friction losses that occur as the fluid travels through pipes and fittings, and any additional pressure losses due to changes in elevation or system design. By considering distance and head loss, the total dynamic head provides a comprehensive view of the energy needed to effectively move water within the system.

The distance is significant since it contributes to both horizontal and vertical movements in the system, while head loss accounts for all forms of energy loss, including friction and minor losses due to fittings, valves, and changes in pipe diameter. Thus, stating that total dynamic head includes distance and head loss captures the entirety of what impacts the pump's efficiency and operational requirements. This understanding is essential for ensuring proper pump selection and system design in water treatment and distribution.