A pump delivers 0.05 m³/s of water with a head of 55 m and runs at a speed of 1470 rpm for 8 hours per day. The efficiency of the pump is 78%. The electric motor driving the pump has an efficiency of 88% and the cost of electricity is 10.5 c/kWh. Determine: (1) (11) (III) The shaft power The shaft torque The cost of electricity per day to run the pump

A pump delivers 0.05 m³/s of water with a head of 55 m and runs at a speed of 1470 rpm for 8 hours per day. The efficiency of the pump is 78%. The electric motor driving the pump has an efficiency of 88% and the cost of electricity is 10.5 c/kWh. Determine: (1) (11) (III) The shaft power The shaft torque The cost of electricity per day to run the pump

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. Reservoir A 200 mm pipe Pump 150 mm Reservoir B
Q1: For a centrifugal pump has a power of 12KW, the efficiencies of the pump and the motor are 60% and 80% respectively, the discharge of the pump is 20 l/sec. Find: 1-The head of the pump. 2-If the cost of the current is 600 I.D. per KW; ecompute the monthly cost of the operations if the daily flow average is 720 m². 3-The head, discharge and power if the pump speed changed to 1850 rpm instead of 1100 rpm. V. Q UT
The discharge through pump is 10 cubic metre per second and the total head is 100 feet. So calculate the unit power of pump
How many kW are delivered by the water flow to the turbine? O 62 kW O 85 kW O 77 kW O 70 kW
The pump draws water at 30 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is three times the velocity head in the 150mm diameter pipe and the head loss from 2 to B is twenty times the velocity head in the 100mm diameter pipe. Which of the following most nearly gives the powet delivered by the pump? Choices: 59.38 kW 75.14 kW 44.82 kW 53.96 kW
The following figure shows a pump that extracts water from a reservoir with a volumetric discharge rate of Q L/s. Assume all losses are negligible. a) What would be the pressure at points A and B, when the pump-motor system extracts P kW from the electric grid. The combined efficiency of the pump-motor system is 60%. b) Draw the Energy Grade Line (EGL) and Hydraulic Grade Line (HGL) for this system. Q = 0.055 L/s; P= 20 kW B 1.2 m Atmosphere C 3.0 m Diameter: 10 cm Pump Diameter: 15 cm
The water system consists of a reservoir with a the pipe entrance is sharp-edged pipe entrance, a turbine and a globe valve. If the flowrate is 0.004 m3/s, what power, in W, is extracted by the turbine? Use the following: v = 1 x 10-6 m2/s Kentrance = 0.5 Kexit = 1 Kvalve = 6.9 f = 0.0316 γ = 9810 N/m3 Choices: 850.33 908.01 842.09 911.94 None of the choices
9.The pump shown delivers 115 li/s of oil, sg = 0.84, toreservoir D at elevation 72 m. The energy lost in thesuction line is 3.2 J/N and in the discharge line is 7.6 J/N. a.Compute the total head added by the pump. b.How many kW does the pump supply the system? c.If the pump is 85% efficient, how much power does it need?
The figure shows a pump delivering 840 L/min of crude oil (sg = 0.85) from an underground storage drum to the first stage of a processing system. (a) If the total energy loss in the system is 4.2 N-m/N of oil flowing, calculate the power delivered by the pump. (b) If the energy loss in the suction pipe is 1.4 N-m/N of oil flowing, calculate the pressure at the pump inlet. Suction pipe DN 65 Schedule 40 1.5m 10 m Pump Flow 3m Air at 825 kPa
In the figure shown below, it is desired to pump 5408732 lit/day of water from a stream to a pool. El. A = 60m while El. B = 92 m. If the combined pump and motor efficiency is 81%, calculate the monthly power cost in pesos if electricity rate is P12 per kW-hr. Assume that the pump operates for 24 hours and take 1 month = 31 days; Pipe 1: 1613 m, 223 mm, 128 (Length, diameter, Hazen Coefficient) Pipe 2: 1987 m, 287 mm, 123 (Length, diameter, Hazen Coefficient) Pipe 3: 813 m, 206 mm, 134 (Length, diameter, Hazen Coefficient) Round your answer to 4 decimal places.
A four-stage (parallel) pump delivers 15 m3 1950 rpm. It is desired to construct a pump at a certain number of stages in series that should run at 1450 rpm delivering 18m/min with 280m of head in total. What should be the new diameter of the impeller and number of stages? per minute of liquid. The total head obtained is 27m. Initially, the impeller measures 24cm in diameter running at
Pls answer ASAP. A hydroelectric power plant takes in 1060 ft³/s of water through its turbine and discharges it to the atmosphere at 7 ft/s. The head loss in the penstock is 66 ft. Estimate the power extracted by the turbine in horsepower. Show fbd.