H.Stars (Guangzhou) Refrigerating Equipment Group Ltd.

  1.Components of  Chilled Water Pump  Head: Evaporator water resistance of the refrigeration unit: typically 5-7m water column (refer to product samples). Water resistance of end devices (air handling units, fan coils): usually 5-7m water column (refer to product samples). Resistance of components such as return water filters, two-way control valves: generally 3-5m water column. Water resistance of headers and manifolds: typically 3m water column. Friction and local resistance losses along the refrigeration system piping: typically 7-10m water column. In summary, the pump head for chilled water is in the range of 26-35m water column, usually around 32-36m water column. Note: Pump head calculation depends on specific refrigeration system conditions; avoid blindly applying empirical values. 2.Components of  Cooling Water Pump  Head: Condenser water resistance of the refrigeration unit: generally 5-7m water column (refer to product samples). Water pressure at cooling tower spray nozzles: