Transcription of DETERMINING TOTAL DYNAMIC HEAD
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DETERMINING TOTAL DYNAMIC HEAD
DETERMINING TOTAL DYNAMIC HEAD The TOTAL DYNAMIC head of a water system must be considered when DETERMINING the size of pumping equipment to be installed. It determines the various head losses that the pump must overcome. TOTAL DYNAMIC head = elevation head + friction head loss + pressure head. A. Elevation head - is the vertical distance which the water must be pumped. It is the elevation difference in feet between the pumping level in the well and the pressure tank. B. Friction head loss is the loss of pressure due to the flow of water through pipe and fittings. Determine diameter, length, and type of pipe material through which the water flows from the well to the pressure tank. Using the pump flow rate as determined from the Residential Unit Method or Fixture Method, refer to Table I (Friction Loss Charts) and Table 2 (Resistance of Valves and Fittings to Flow of Fluids) to determine friction head loss due to pipe and fittings.
Determine Pressure Head 12. What is the pressure switch pump cut -out setting? _____ psi Example: The pump cut-out setting is the pressure at which the pump will shut
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