The two-stage pumps are 20 m in length and capable of withstanding the harsh environment of warm subterranean saltwater.
The two-stage pumps are 20 m in length and capable of withstanding the harsh environment of warm subterranean saltwater.

Danish company IRON Pump will provide specially designed pumps with motors from Hoyer Motors, to cool water for a new power plant in the Bahamas.

Four CLVS vertical turbine pumps with a capacity of 2,000 m3/h – 41 mlc will supply cooling water to the seven power plant motors, which will produce 132 megawatts combined.

The cooling water for the newly constructed power plant will be drawn from pockets of saltwater 20 m below the island. The two-stage pumps are 20 m in length and capable of withstanding the harsh environment of warm subterranean saltwater.

The company says that with the shafts 20 m vertically in the ground, the pipes alone are very heavy and so the torque on the shaft is massive and calculations had to be made to avoid the risk of the pump buckling on start-up.

IRON Pump needed four 366 kW motors for the project, each of which operates one of the large turbine pumps. The size 400 motors, supplied by Hoyer Motors, weigh 3.1 tonnes.

The installation will be completed later this year.