4) If a 60kW pump is operating at 1200 RPM, and has a Head of 250 ft, and an 8 impeller, what happens to the Head, Power, and speed if the impeller is increased by 50%? 4) If a 60kW pump is o...
5.) A pump operating at 1170 rpm discharges 2000 gpm at a total head of 109 feet. If the pump speed is increased to 1300 rpm, then what is the corresponding brake horse power (HP) if the pump efficiency is 63%?
1.) A pump operating at 1205 rpm discharges 2360 gpm at a total head of 113 feet. If the pump speed is increased to 1380 rpm, then what is the corresponding brake horsepower (BHP) if the pump efficiency is 65%?
fluid Q2: A centrifugal pump with an impeller diameter of 220 mm has to pump 0.02 mº/s of brackish water to an RO unit with following performance data at the best efficiency point: impeller speed =3000 rpm, total head= 68 m, net positive suction head=1.8 m, input power=16 hp. Evaluate the performance of a homologous pump with twice the impeller diameter operating at half the impeller speed. (15 Marks) 2016)
A water pump has been operating at a pump station at speed 1000 rpm. The pipeline system characteristics at the station are as follows. Head loss in pipeline: 80 1 Discharge (LS) 0 20 40 60 Head (m) 4 10 20 The static head is 20 m. The pump characteristics at speed 1000 rpm are provided by the manufacturer and given as follows. Discharge (IS) 0 20 40 50 60 Head (m) 50 45 14 Efficiency (%) 60 69 60...
A water irrigation pump running at 1200 rpm produces a head of 50m and a flow rate of 40m³/h. The NPSHr at this duty point is 3m. 1) If the discharge pressure is to be increased to 540kPa, calculate the speed required to achieve this pressure. 2) Estimate the NPSHr required by the pump at the new speed.
4.45 A two-tank pump/pipe system has a head requirement of 23.4 ft at a flow rate of 100 gpm. The elevation difference between the fluid surfaces in the tanks is 10 ft. The pump is a Bell & Gossett Series e-80 Model 2.5x2.5x9C operating at 1170 rpm with a 7.5-inch impeller. a. Develop an cquation for the system curve. b. Use a computer program to develop an equation for the 7.5-inch impeller using data read from the pump performance curve...
6.) A selected pump operates at 1750 rpm and delivers 4135 gpm at 248 feet of head with a 16-inch impeller. The design of the system requires that the pump deliver only 3700 gpm. What is the new impeller diameter to meet the design flow rate?
A pump operating at 1170 rpm discharges 2000 gpm at a total head of 109 feet. If the pump speed is increased to 1770 rpm, what is the brake horsepower (BHP, in kW) if the pump efficiency is 72% at the new pump speed? Water temperature is 70 °F. Round your answer to the nearest whole kilowatt. (Conversion factor: 1 horsepower = 745.7 W)
Please answer question 7: A centrifugal pump discharges 500 GPM through a 12-inch diameter impeller. The fluid leaves the impeller with a tangential velocity of 17 ft/sec. If water, @ 68°F, enters the impeller via radial flow (I.E. no whirl), and the inner radius and thickness of the impeller are 1.75-inches. (Assume a constant thickness of the impeller) and if the pump speed is 1775 rpm, with a head loss of 4.5-feet. What is the horsepower input to the flow by the pump? QUESTION...
Question 3 Show that the pressure head rise in the impeller of a centrifugal pump when frictional and other losses in the impeler are neglected, is given by (a) where Vni is the velocity of flow at the inlet, while at the outlet of the backward curved blades, u2, m2, and ßz are the blade velocity, velocity of flow and blade angle, respectively. (4 marks) A centrifugal pump rotating at 1450 rpm discharges 0.015 m'ls of water. Its impeller has...