Map the pressure-energy path

Identify the high-pressure reject stream, recovered-pressure destination, pumps and electrical drives. Danfoss describes an arrangement containing a pressure exchanger, booster pump and motor. That example shows why recovery is an integrated hydraulic task, not a stand-alone negative electrical load. Other technologies can differ; use their applicable documents rather than transfer one device's arrangement or saving percentage.

Keep hydraulic and electrical quantities separate

For an illustrative incompressible-flow point, a pressure difference of 6 million pascals multiplied by 0.001 cubic metre per second represents 6 kW of hydraulic power. It does not establish 6 kW of AC saving. The invented operating point omits actual efficiency and system changes. Electrical benefit requires the corresponding before/after pump and auxiliary input at consistent boundaries.

A recovery-device claim should retain the membrane-system condition it assumes. Changed feed salinity or production duty can alter the electrical comparison, so nominal recovered pressure alone does not validate the claimed net input reduction.

Compare equal accepted-water output

Match feed conditions, production rate, recovery and owner-defined product acceptance. If those change, identify the changed service before interpreting lower kWh per cubic metre. Include any added motor input once and retain startup/nonproduction states. Give the wind integrator the accepted net electrical trajectory rather than subtracting a hydraulic rating from a site meter. This page provides no RO pressure or flow settings and establishes no water-quality result, MARSTON energy-recovery product or compatibility with a third-party desalination system.