A centrifugal pump compresses 3000 liters/min of water from 98 kPa to 300 kPa. The inlet and outlet temperatures are 25°C. The inlet and discharge piping are on the same level, but the diameter of the inlet piping is 15 cm, whereas that of the discharge piping is 10 cm. Determine the pump power in kilowatts.

A pump operates at 78% efficiency when it is pumping water (density = 1000 kg/m³) at a volume flow rate of 0.3 m³/s with a head of 17 m. The gravitational acceleration g = 9.81 m/s². The pump impeller's shaft power is kW.

When water is pumped into a water tank 20 m above a lake with a flow rate of 70 l/s, 20.4kW of electrical power is consumed. Determine the efficiency of the pump-motor group by ignoring the friction losses in the pipes and the change in kinetic energy. Determine the pressure difference between the inlet and outlet of the pump.

A pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb. The pump and its motor have an overall efficiency of 55 %. i. Determine Delta Z (Z2 - Z1) in ft. ii. What is the actual shaft work needed for this particular mass flow rate in (ft-lbf)/s. iii. What is the mass flow rate of the water in lbm/s?