Hydraulic Power and Energy

The mechanical power of a Hydraulic flow is basically the product of the fluid flowrate, by the head at which it is transferred.

When using usual units in PVsyst:

     P hydr [W] = FlowR [m³/h] * Head [Bar] * 1000 / 36
or P hydr [kW] = FlowR [m³/h] * Head [Bar] * 1 / 36

In the same way, the energy is related to the total water volume transferred

     E hydr [kWh] = Flow [m³] * Head [Bar] * 1 / 36
or E hydr [MJ] = Flow [m³] * Head [Bar] * 1 / 10

Calculation tool

You have a calculation tool for the evaluation of the Hydraulic power in any units, in the "System" dialog, page "Pump definition".