Water Transfer | Vertical Shaft Replacement

Gerdau is one of the main customers using HIGRA equipment for river water collection, industrial water circulation and processes in general. Simple installation, low noise levels, high hydro-energy efficiency and reduced civil works are among the advantages offered by the pumps, as the company’s directors emphasize. “Industry is looking for energy reduction and we have excellent results. At Gerdau, for example, in the rolling mill sector we achieved a very quick return on investment with a significant reduction in installed power compared to the previous equipment.”

Case Hydro-Energy Efficiency: Gerdau

Cosigua

Hydro-Energy Efficiency

Old Scenario

– SULZER Vertical Shaft Pump
– Motor power 125 HP (92kW)
– Total pump flow 1,200m³/h (333 l/s)
– 05 pumps: 6.000m³/h
– Installed power: 625 HP (460Kw)
– Pumping pressure of 10mca
– Hydro-energy index of 0.077 kW/m³/h
– Monthly electricity cost R$ 49,680.00 (R$ 0.15 kWh)
– Annual electricity cost R$ 596,160.00

Current Scenario

– HIGRA M1-305/100B amphibious pump
– Motor power 100CV (73.6W)
– Flow rate per pump 1,200m³/h (333 l/s)
– 05 pumps: 6.000m³/h
– Installed power: 500 HP
– Pumping pressure of 10mca
– Hydro-energy index of 0.061 kW/m³/h
– Monthly electricity cost R$ 39,744.00 (R$ 0.15 kWh)
– Annual electricity cost R$ 476,928.00

Results

– Reduction of power 125 HP
– Hydro-energy gain of 25%
– Investment required R$ 375,000.00
– Monthly savings of R$ 9,936.00
– Annual savings of R$ 119,232.00
– Return on investment in 3.15 years