A pump operating at 1170 rpm discharges 2000 gpm at a total head of 109 feet....
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)
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)
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)
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?
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,...