Water is being pumped from a supply reservoir to an elevated receiving water tank with static head = 8.1 m. The pipe length = 160 m, diameter = 100 mm, Friction factor f = 0.019. If the pump characteristic curve is given by the following equation H= 59[6 - 0.02 Q where H is in m and Q in L/s and the pump efficiency %, E = -0.1(Q-25)-+72, (The equations are valid for for Q less than 40 L/s). 1. Calculate the pump duty points H and Q? (neglect minor losses)? 2. Estimate the pump efficiency %?

Water is being pumped from a supply reservoir to an elevated receiving water tank with static head = 8.1 m. The pipe length = 160 m, diameter = 100 mm, Friction factor f = 0.019. If the pump characteristic curve is given by the following equation H= 59[6 - 0.02 Q where H is in m and Q in L/s and the pump efficiency %, E = -0.1(Q-25)-+72, (The equations are valid for for Q less than 40 L/s). 1. Calculate the pump duty points H and Q? (neglect minor losses)? 2. Estimate the pump efficiency %?

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

HYDRAULICS Engineering Q1; All the pipes have a diameter of 0.28 m in the pipe-reservoir system shown in the Figure. The roughness height of each pipe is k=1 mm. Calculate the flow rate of the pipes. Draw the energy grade line (EGL) on the Figure. Minor loses can be ignored in the calculations. (v=1.01x10-6 m?/s). Z2=115m Z3=85m Zz=25m (2) (3) (1) 125m 95 160m
From a clear water reservoir 4 m deep and maximum water level at 30.00m, water is to be pumped to an elevated reservoir at 75.00m at a constant rate of 900 000 liters/hr over a distance of is 2.5km. Give the economical diameter of the rising main and the Water HorsePower of the pump. Neglect minor losses and assume f=0.04 Economic pipe diameter by Lea equation is: in m³/s D.-1.22√ where Q is discharge
pump is to deliver water from an underground tank against a static head of 40m. The suction pipe = 50m long and is of 25 cm diameter with Darcy-weisbach friction factor, f = 0.02. The delivery pipe of 20 cm diameter, 16m long and has f = 0.022. The pump characteristics can be expressed as: = 100 - 600002 He Where, H = Pump head in meters. p Q = Discharge in m³/sec. Calculate the head and discharge of the pump.
A centrifugal water pump with a suction pipe is shown in Figure 3.5 Pump output is Q=0.03m³/s, the diameter of suction pipe d=250mm, vacuum pressure that the pump can reach is p(og)=6.9 mH2O, and all head losses in the suction pipe hw=1.5mH2O. Determine the utmost elevation he from the pump shaft to the water surface on the pond. he 0. Figure 3.5 Pumping water
The pump whose characteristics are: H, = 80 – 600V²2 %3D n = -1500V² + 700V Elevation = 230 m |(2) (1) Elevation = 200 m 1000 m pipe 40 cm in diameter Pump Figure Q3 is used to pump water (µ=0.001kg/ms) a distance of 1000 m between two reservoirs the elevations of which are shown in Figure Q3 and remain constant. The pipe is 40 cm diameter commercial steel (ɛ=0.046 mm). Ignoring minor losses and assuming fully turbulent flow. Determine d) The volumetric flow rate e) The efficiency at the operating point
A 300mm diameter pipeline 3000m long runs on a constant grade between 2 reservoir of surface elevation 150m and 120m respectively. The flow rate through the line is inadequate and a pump is installed to increase the capacity to 0.17 cubic meter per second. Assuming f= 0.03 a. Calculate the head of water that the pump must supply. b. Calculate the horsepower that must be delivered to the water by the pump. c. Where should the pump be installed and why?
A certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. If a single pump is used to deliver water of a system which requires a total of 8 ft3/s, what is the efficiency of the pump (in %)? Take the specific weight of water to be 62.4 lbf/ft3.
The volumetric flow through the pump in the figure is Q = 0.014 m3 / s. The fluid being pumped is oil with specific gravity SG = 0.86. Losses in the system are caused by the check valve and friction in the pipeline and were estimated at HLT = 1.86 m col of water. Other data available are: PA = -28 kPa (vacuum), PB = 296 kPa (man), ZB = 1 m, DA = 7.62 cm, DB = 5.08 cm. Calculate the POWER in kW that the pump transmits to the oil. Bomba = pump flujo = flow/flux válvula de verificación = check valve
Two homogeneous pumps runs at a same speed of 500 rpm. Pump A has diameter 50 cm and discharges 0.6 m³/s of water under net head of 50 m. If discharge in pump B is 0.3 m³/s, then the diameter of impeller of pump B is [Take 3√2 = 1.26]
Q3: A Derive the relation between the head losses and flow (hL=kQ) which is assumed in the hardy cross method. B.Determine the water power, pump power and the motor loàd 1oi a pump system designed to deliver 027 m'/sec against a total system head of 35 m. assume the efficiencies of the pump and motor are 60% and 80% respectively.
A certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. a. If a single pump is used to deliver water to a system which requires a total of 8 ft3/s, what is the efficiency of the pump (in %)? Take the specific weight of water to be 62.4 lbf/ft3. b. If two of these pumps are connected in series to deliver water to a system whose head requirement is 615 ft, what will be the operating discharge rate in ft3/s of either pump? Assuming the head is equally divided between the two pumps, what is the efficiency of either pump (in %)? Take the specific weight of water to be 62.4 lbf/ft3.
Question 1: For the setup shown in the figure: H = 20 m f = 0.0012 f = 0.0012 D = 250 mm D = 80 mm L = 50 m L = 50 m f = 0.001 D₁ = 150 mm L = 100 m A. Calculate Q in the 150 mm-diameter pipe B. If the NPSHR of the pump is 3 m. Is it feasible to use the pump? You can use: Patm-101 kN/m², and Pvapor = 3.17 kN/m² H₂ = 10 m Pump Q f = 0.0012 D=80 mm L = 50 m Q₁ = 0.2