Problem 2 (25 points) A pump operating at 1170 rpm discharges 2000 gpm at a total...
Problem 2 (25 points) 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)
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)
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%?
#1 plz HW24 、049 wish to design a pumping system with an effective head (total dynamic head - TDH is to be 90 gpm. a. If the system is lossless what is the required input power in Watts? b. If the system has an efficiency of 58% what is the input power in Watts? 2. Recall the system layout at the top of Page 1 in WS24. The input electrical power is 2600 W. The motor is an induction motor...
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...
A pump station must fill a 15-million-gallon tank within 10 hours. The pump must overcome a total head of 115 feet (this include both elevation head and friction). Assume the pump and motor efficiency are 0.75 and 0.90, respectively. Water temperature is 80°F. Assume the cost of electricity is $0.22/(kW-h). What is the yearly cost to operate the pump station? Round your answer to the nearest whole dollar. (Conversion factor: 1 horsepower = 745.7 W)
A pump station must fill a 15-million-gallon tank within 10 hours. The pump must overcome a total head of 115 feet (this include both elevation head and friction). Assume the pump and motor efficiency are 0.75 and 0.90, respectively. Water temperature is 80 °F. Assume the cost of electricity is $0.22/(kW-h). What is the yearly cost to operate the pump station? Round your answer to the nearest whole dollar. (Conversion factor: 1 horsepower = 745.7 W)
Problem 3: The 32-in diameter pump (see Figure below) is to operate at a speed of 1170 rpm to pump water at 60° F from one reservoir to another 120 ft higher through 1500 ft of 18 in ID pipe with a friction factor f = 0.015. If minor losses are ignored; what will the operating point and efficiency be? n = 1170 r/min 800 50 40 NPSH NPSH, ft 700 36-in dia. 30 20 = 600 88% Total head,...
(100 points) Water at 25°C is pumped at a rate of 0.075m'/s from a reservoir 20m above a pump to a free discharge (this means discharged to atmosphere) 35m above the pump. The pressure on the intake side of the pump is 150kPa and the pressure on the discharge side of the pump is 450kPa. The pipe between the reservoir and the pump is 3 meters of 5in diameter cast iron. From the pump to the discharge the pipe is...