[ H_total = H_f + H_eq ]
Obtain from chiller, AHU coil, and control valve datasheets at design flow. Typical ranges: chilled water pump head calculation
where:
This is the energy lost due to water rubbing against the pipe walls. [ H_total = H_f + H_eq ] Obtain
$$TDH = H_friction + H_static + H_pressure\ differential$$ chilled water pump head calculation
The chilled water pump head calculation involves the following steps: