Grundfos Submersible Pump (SP)

Grundfos SPE represents a series of submersible pumps designed specifically for groundwater applications and operated through frequency control. Crafted from stainless steel, these pumps come in three distinct material types and sizes: 6 inches, 8 inches, and 10 inches.

The 6-inch motor, ranging from 4 to 45 kW, is of the permanent magnet type, boasting remarkable energy efficiency. It necessitates a frequency converter for operation.

Here’s some additional product information about water pump efficiency:

MEI:

  • Serves as a scale evaluating hydraulic pump efficiency at key operational points: optimal (BEP), part load (PL), and overload (OL).
  • EU Regulation mandates a minimum MEI of >0.1 since Jan 1, 2013, and >0.4 since Jan 1, 2015.
  • The benchmark for top-performing pumps as of Jan 1, 2013, is MEI ≥ 0.70.

Impeller Efficiency:

  • Pump efficiency decreases when using a shortened impeller compared to a full impeller diameter.
  • Shortening the impeller aligns the pump to a fixed operating point, thus lowering energy consumption.
  • MEI calculation is based on the full impeller diameter.

Optimized Operation:

  • Variable operating points enhance efficiency and economy.
  • Achieved through mechanisms like variable transmission drives.
  • These mechanisms customize pump operation to match system requirements.
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