A pump discharges 500 l/s at a total head of 25m. The drive motor delivers 150 kW of power to the pump. At what efficiency is the pump operating?
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- A plant has installed a single suction centrifugal pump with a discharge of 68 m3/hr under 60 m head and running at 1200 rpm. It is proposed to install another pump with double suction but of the same type to operate at 37.22 m head and deliver 90 m3/hr. Determine the speed of the new pump.A plant has installed a single suction centrifugal pump with a discharge of 68 m3/hr under 60 m head and running at 1200 rpm. It is proposed to install another pump with double suction but of the same type to operate at 30 m head`and deliver 90 m3/hr. What must be the impeller diameter of the proposed pump if the diameter of the existing pump is 150 mm?Water is pumped at a flow rate of 15 m3/s from the lower reservoir through a pipe with a diameter of 1.50 m. How much power does the water need to be powered to produce this much flow?
- A centrifugal pump discharging 10 lps against 25 m of head and operating with an efficiency of 60% requires 4.1 kW at 1000 rpm. What is the theoretical discharge if the speed is increased to 1500 rpm assuming the efficiency remains constant? What is the theoretical head and kW at 1500 rpm?A manufacturing facility consumes 40 m^3/h of water taken from a nearby river located 15 m below the factory tank.Calculate the daily pumping cost if water is conveyed through a 3in, 240 m-long pipe, including friction losses. The cost of electrical energy is 0.831 pesos/kilowatt-hour and the pump operates with 80% efficiency.a cylindrical tank stands vertically on the top of the platform. an orifice is placed at the vertical side of the tank and located 3.2m above the ground. if the head of the water is 3.2 m above the center of the orifice, how long will the jet reach the ground?
- 22. A 350 mm pipeline 3000 m long runs on a constant grade between two reservoir of surface elevation 134 m and 129 m respectively. The flow rate through the lines is inadequate and a pump is installed to increase the capacity to 0.26 m3/s. Assuming f = 0.017 compute for the energy produce by the pump?Water is issued vertically at the rate of 30 liters per second through a 50mm diameter nozzle. Neglecting losses, how high above the nozzle tip can the water jet support a load of 250N?Find the work required to pump all of the water from a rectangular tank with an 8mx5m base and a height of 7m through a spout 1m high on the top of the tank. Assume water has a density of 1000kg per cubic meter and g=9.8 meters per second
- 22. A 350 mm pipeline 3000 m long runs on a constant grade between two reservoir of surface elevation 134 m and 129 m respectively. The flow rate through the lines is inadequate and a pump is installed to increase the capacity to 0.26 m3/s. Assuming f = 0.017 compute for the energy produce by the pump?49 m32 m56 m21 mIf a net head of 150 m is to be generated through pumps of specific speed 30, rotational velocity 1450 RPM, and discharge rate of 0.2 m3/s, determine the number of pumps required.Water is pumped 14.5 km from a reservoir at elevation 30 m to another reservoirat elevation 70 m. The steel pipeline connecting the reservoirs has a nominal diameter of 1400mm (the actual inside diameter is 1372 mm) with C = 90. If the flow is 1.18 m3/s, the pumpingefficiency is 82%, and electricity costs $0.14/kWh. Assuming that the density of water is 1000kg/m3, what will be the monthly power bill? Sketch the hydraulic and energy grade lines.