FAQ's

Why are daily water requirements important to know, and not necessarily flow per hour?

Unlike conventional electric pumps which pump at a constant rate, once switched on, flow rates for solar pumps are variable over the course of the day. Therefore solar direct pumps start pumping slowly in the morning, with peak flow rate over midday, then dropping off in the afternoon.

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Why are Solar Water Pumps not specified in Horsepower, Watts or Kilowatts?

Although solar pump motors and controllers have nominal power ratings, the power at which solar pumps operate are variable. This  depends on the solar array size,  and time of day ( sun radiation intensity varies over course of the day),  and factors such as temperature, pump geometry and dynamic head of  the application.

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Why is the borehole depth, and pump depth, of minor importance in solar submersible pump selection and sizing?

The important parameter is vertical lift which is NOT determined by the depth of the borehole, or the depth of the pump setting. It is determined by the depth of the water level in the borehole, plus lift ( height or elevation) above ground to the water delivery point.(see diagram)

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PV Modules and Arrays

  • Crystalline and CIS thin-film technology PV modules from selected manufacturers
  • Mounting structures and systems to configure complete PV arrays, from small to large

Lorentz Solar Water Pumps

  • Submersible pumps to lift water from boreholes, dams and rivers for drinking water, irrigation applications etc
  • Surface pumps for swimming pool filtration & circulation, pond management, irrigation

    

Inverters & Control Equipment