1. A fuel pump is delivering 10 gallons per minute of oil with a specific gravity of 0.83. the total head is 9.15m. Find how much energy/power does the pump consumes in kJ per hour.
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- 6. A pump is delivering water from the surface of a lake to a tank 20m above at a rate of 70L/s while the pump label suggests it consumes 18kW of electric power. If all the loses and any changes of kinetic energy are negligible, a. What is the pump efficiency? b. What is the pressure rise of water in the pump?2. A pump draws water from a lake delivered to a height of 50 meters above the lake and encounters 15 meters of headloss. Determine the pump power requirement in Kilo-Watts to deliver a constant supply of 500 Liters per second? The correct answer has a margin of 1 from exact answer. Velocity head is neglected.Q2: A reaction turbine has guide vanes at an angle of 30° and the runner blades make an angle of 80° relative to the tangent at inlet. The blades width at the inlet is % of the outer diameter. The water does not have any tangential velocity at the outlet. The head is 25 m and the rotational speed of the runner is 16.67 rotations per second. The turbine efficiency is 88 %. Determine the turbine runner diameter at the inlet and the power developed.
- 4. A centrifugal pump delivers 1500 L/min of water from an initial pressure of 156 kPa to a final pressure of 328 kPa. The area of the inlet pipe is 315 cm² and the area of the discharge pipe is 80 cm?. Solve for the power input to the pump, kW.A fountain and a water tank will be powered by water from a nearby lake. The elevations and pipe connections are depicted in the diagram below. The fountain's jet water should reach a height of at least 2.5 m from the nozzle outlet. The tank, on the other hand, is elevated to allow gravity to distribute water. The table below contains the specifications for nozzles, suction and discharge pipes. What is the minimum power input to the pump in kW, assuming negligible minor head losses? Assume that the pump efficiency is 88 percent and the motor efficiency is 95 percent. The fountain's water is returned to the lake via a drainage system.1- A centrifugal fan supplies 4.7m3/s of air at a total static pressure of 325Pa. If the fan efficiency is %60 and rotates at a speed of 950rpm and supplies air with a velocity of 12m/s, determine the fan total pressure, air power, and fan power? Ans. 411 Pa
- Q3. A storage tank is filled with water from a river by using a pump at a rate of 100 L/s, as shown in the below figure. Storage tank 15 m Pump The motor is operated at an energy consumption of 250V and 80 amp with the shift rotating speed of 950 RPM at a torque of 8.5 N.m. By ignoring the changes in the kinetic energy and the frictional losses in the pipe, Calculate the following: a) pump-motor unit efficiency. b) motor efficiency. c) difference in pressure between the inlet and the exit of the pumpA 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 kWhProblem 2. A garden hose with an attached nozzle is used to fill a container with water. The nozzle starts at a diameter of 2 cm and is then reduced to 0.8 cm at the exit. In 50 seconds, the nozzle and hose are able to fill the container with 10 gallons of water. Find the volumetric flow rate (m³/s), the mass flow rate (kg/s), and the average velocity (m/s) at the at the nozzle exit. Assume the density p of water is 1000 kg/m³.
- +. A pump extracted water 60 meters below the ground and discharge to a tank 5 meters above the ground. Suction pipe is 10 cm in diameter while discharge pipe has 15 cm diameter. Pump eftficiency is 85% and discharge 15 liters/second of water. Calculate the required motor horsepower to drive the pump.A compressor draws in 500 E of air whose density is 0.079 - and discharges ft3 min it with density of 0.304- At the suction, P1 = 15- and at the discharge, P2 = in The increase in the specific internal energy is 33.8 Btu and the heat from lb 80 air by cooling is 13 . Neglecting changes of potential and kinetic energy, Btu determine the work done on the air in - and horsepower,hp. min1. 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.)