151. A pump, which is geometrically similar to the one shown below with the 30 cm impeller installed, has an impeller diameter of 60 cm and has a brake horsepower of 160 kW at BEP when pumping a fluid with a density of 680 kg/m³. Determine the BEP head and flow rate and the appropriate speed to run the pump. 70 1750 rpm Water (20°C) 35 cm 60% 70% BEP (n=82%) 80% 60 50 50 30 cm 25 cm 20 cm Head (m) 30 10 40 20 10 10 NPSH 50 25 25 NPSH (m) 0 0 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Flow (L/min)

151. A pump, which is geometrically similar to the one shown below with the 30 cm impeller installed, has an impeller diameter of 60 cm and has a brake horsepower of 160 kW at BEP when pumping a fluid with a density of 680 kg/m³. Determine the BEP head and flow rate and the appropriate speed to run the pump. 70 1750 rpm Water (20°C) 35 cm 60% 70% BEP (n=82%) 80% 60 50 50 30 cm 25 cm 20 cm Head (m) 30 10 40 20 10 10 NPSH 50 25 25 NPSH (m) 0 0 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Flow (L/min)