Question

what are head pump, head turbine and head loss and their formulas?

Answer 1

ANS -

1) Pump Head -

The pump head or discharge head of a water pump is a measure of the power of a pump. The greater the pump head, the greater the pressure that the pump can generate. This statistic is measured in meters (or feet) and is calculated by placing a tube on a pump’s discharge and measuring the maximum height to which it can pump water

2) Turbine Head -

Head is the height difference between where the water enters into the hydro system and where it leaves it, measured in metres. Typically this could be the height of a weir at the turbine entrace or if the site is undeveloped it would be between where the hydro intake screen would be and where the water discharges from the turbine and returns to the watercourse.

1 - Inlet

2- Outlet

P = Pressure

V - velocity

g = acceleration due to gravity

3) Head Loss -

Head loss is a measure of the reduction in the total head (sum of elevation head, velocity head and pressure head) of the fluid as it moves through a fluid system. Head loss is unavoidable in real fluids