A centrifugal pump operating under steady flow conditions delivers 2,270 kg/min of water from an initial pressure of 82,740 Pa to a final pressure of 275,800 Pa. The diameter of the inlet pipe to the pump is 24 cm and the diameter of the discharge pipe is 10.16 cm. What is the work done? a. 458.1 kJ/min b. -458.1 kJ/min c. 438.4 kJ/min d. -438.4 kJ/min

An acceptance test was conducted on a centrifugal pump having a suction pipe 25.4 cm in diameter and a discharge pipe 12.7 cm in diameter. Flow was 186 m³/hr of clear cold water. Pressure at suction was 114.3 mmHg vac and discharge pressure was 107 kPag at a point 91 cm above the point where the suction pressure was measured. Input to the pump was 15 hp. a. Determine the pump efficiency b. If the pump runs at 1750 rpm, what net flow, head, and brake hp would be developed and required if the pump speed were increased to 3500 rpm? Assume constant efficiency.

A three lobe rotary pump moves 0.0825 gal of a coal slurry in each lobe volume. The volume flow rate of the slurry (in gpm) for the case where n = 150 rpm is 86.625 gpm 74.25 gpm 57.75 gpm 28.875 gpm 14.44 gpm O

1. As a junior city engineer of a municipality, you are tasked to design the specifications of the pump with 3650 cu.m/day. The water source in the municipality is from an open reservoir and will supply to a pressure tank that will distribute to the municipality. open 4l Pressure reservoir Tank 70 m 15 m Pump Determine the following specifications of the pump and piping system (assume fluid stagnation at the pump). Velocity head at pt.1 to 2 if the diameter of the pipe is a.) 200 mm b.) Suction pressure of the pump in kPa (Pressure at pt. 2). c.) Velocíty head at pt.3 to 4 if the diameter of the pipe is 150 mm d.) Discharge pressure of the pump in kPa (Pressure at pt. 4). Assume atmospheric pressure at the pump. If an air vent is installed at the pipe just right before the pressure tank with diameter of 20 mm, what is the velocity of discharge in m/s? The height of the pressure tank is 12 m, what is the flowrate in cu.m/hr at pt.5 if the diameter of the pipe is 150 mm? e.) f.)

.

1. A centrifugal pump delivers 900 ?3/ℎ? of sea water (sp.gr.= 1.03) from a source wherethe water level varies 2 m from high to low tide level. The pump centerline is located2.6 m above the surface of the water at high tide. The pump discharges into theatmospheric surface condenser, 3 m above the pump centerline. Loss of head due tofriction in the suction pipe is 0.8 m and that in the discharge side is 3 m. Pump is directlycoupled to a 1750 rpm, 460 volts, 3 phase, 60 Hz. Calculate:  a) total dynamic headb) pump theoretical powerc) power to drive the pump if pump efficiency is 82%

2. A centrifugal pump having extermal and intemal diamcters as 750 mm and 400 mm respectively is operating at 1000 r.p.m. The vancs are curved hack at 35° to the tangent at outlet. If the velocity of flow is constant at 6 m/s, find (a) vane angle at inlet, and (b) work done per kN of water. (Ans. 16°; 123 kJ)

A pump rated at 65% efficiency is used to transport water from a large open reservoir to a point 10m above at a rate of 450 L/min, into a vented tank. Assuming friction is negligible and that the efficiency of the motor is 77%, how much electricity is required to keep the process running for 24 hours? Choices: A. 29.37 kWh B. 35.28 kWh  C. 56.71 kWh D. 43.21 kWh

Need solution asap..

A centrifugal pump running at 750r.p.m. discharges water at 0. Im3/s against a head of 10 m at its best efficiency. A second pump of the same homologous series, when working at 500r.p.m., is to deliver water at 0.05m3/s at its best efficiency. What will be the design head of the second pump and what is the scale ratio between the first and the second?