Suppose the pump of Fig. P14-23 is operating at efficient condition. The pipe diameter after the pump is "X" cm and pipe diameter before the pump is "Y" diameter. The friction losses along the pipe are negligible (no need to use Darcy Equation). But there are minor losses in the system. They are as follows; the sharp inlet is 0.50 m of water, each valve has a loss of 2.4 m of water, and each of the three elbows has a loss of 0.90 m of water. The contraction at the exit reduces the diameter by a factor of 0.60 (60% of the pipe diameter(after the pump)), and the loss of the contraction is 0.15 m of water. The volume flow rate is "K" Lpm. Density= 990kg/m³. dynamic viscosity=1.002 x10³ kg/m-s. Z1-Z2="L". The kinetic energy correction factor is 1. Determine (a) Required Head, (b) Required pump power (water Hp), (c) Reynolds number at the exit.

Suppose the pump of Fig. P14-23 is operating at efficient condition. The pipe diameter after the pump is "X" cm and pipe diameter before the pump is "Y" diameter. The friction losses along the pipe are negligible (no need to use Darcy Equation). But there are minor losses in the system. They are as follows; the sharp inlet is 0.50 m of water, each valve has a loss of 2.4 m of water, and each of the three elbows has a loss of 0.90 m of water. The contraction at the exit reduces the diameter by a factor of 0.60 (60% of the pipe diameter(after the pump)), and the loss of the contraction is 0.15 m of water. The volume flow rate is "K" Lpm. Density= 990kg/m³. dynamic viscosity=1.002 x10³ kg/m-s. Z1-Z2="L". The kinetic energy correction factor is 1. Determine (a) Required Head, (b) Required pump power (water Hp), (c) Reynolds number at the exit.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A hydraulic ram pump lifts 0.005 m3/s of water to a tank 20 m above the ram through a 80 m long and 6.5 cm diameter delivery pipe. Take Darcy friction coefficient ƒ = 0.01 and neglect frictional loss in the supply pipe. If the supply tank is 3 m above the ram and supplies 0.1 m3/s of water; A) Calculate Aubuisson’s efficiency, in %, of the ram pump. B) Calculate the Rankine efficiency, in %, of the ram pump.
04: Three pipes of diameters 300 mm, 200 mm and 400 mm and lengths 450 m, 255 m and 315 m, respectively, are connected in series. The difference in water surface levels in two tanks is 18 m. Determine the rate of water flow if coefficients of friction are 0.0075, 0.0078 and 0.0072, respectively, considering: (a) with minor losses, (b) without (neglecting) ‘minor losses.
Calculate the power required to pump water at 120 kg/s from a supply tank, through an 18 cm diameter galvanised iron pipe to a storage tank located 12m above the supply tank. The length of the pipe is 70 m. All losses other than friction losses are ignored. [Hint: Use Moody Diagram] (For water, ρ = 1000 kg/m3, μ = 1.003 x 10-3 Pa.s)
9.7. Through a hydraulic turbine flow 2.8 m3/s of water. On the 1 m inlet pipe at elevation 43.5,a pressure gage reads 345 kPa. On the 1.5 m discharge pipe at elevation 39, a vacuum gage reads150 mm of mercury. If the total head lost through pipes and turbines between elevations 43.5and 39 is 9 m, what power may be expected from the machine?
C2. A conical tube is fixed vertically with its smaller end upwards and it forms a part of the pipeline. The diameter at the smaller end is 245 mm and at the larger end is 467 mm. The length of the conical tube is 1.8 m and the flow rate of the oil is 128 liters/s. The pressure at the smaller end is equivalent to a head of 9.7 m of oil. Considering the following two cases: (1) Neglecting friction, (without head loss) determine (i) the velocity at the smaller end in m/s, (ii) the velocity at the larger end in m/s, and (iii) the pressure at the larger end of the tube. (2) If a head loss (with head loss) in the tube is hL= 0.0153(V1-V2)2, where V1 is the velocity at the smaller end and V2 is the velocity at the larger end, determine (iv) the head loss in m of oil and (v) the pressure at the larger end of the tube.
Paolo owns a hydroelectric power generating system as shown in HG008. Water flows from an upper reservoir to a lower one passing through a turbine at the rate of 150 lps. The total length of pipe connecting the two reservoir is 100 m. The pipe diameter is 250 mm and the Hazen – Williams coefficient is 120. The water surface elevations of reservoirs 1 and 2 are 197 m and 50 m, respectively. Find the velocity of flow in pipe in m/s.
Provide clear and complete solution as well as diagram. The initial condition of air in an air compressor is 97 kPa and 27 oC and discharges air at 350 kPa. The bore and stroke are 250 mm and 280 mm, respectively with percent clearance of 6 percent running at 310 rpm. Find the volume of air at suction in m3/hr. A. 232.61 C. 156.34B. 289.16 D. 135.23
As shown in Fig. 4.33, the pipe diameter is d = 25 mm. l1 = 8 m; l2 = 1 m;H = 5 m. The nozzle diameter is d0 = 10 mm, and the minor loss coefficientsof inlet and elbow are f1 = 0.5 and f2 = 0.1 respectively. For nozzle, f3 =0.1 (relative to the outflow velocity of nozzle). The friction factor is k = 0:03.Try to determine jet height h.
The head-versus-flow-rate characteristics of a centrifugalpump are shown in Fig.. If this pump drives water at20°C through 120 m of 30-cm-diameter cast iron pipe,what will be the resulting flow rate, in m3/s?
A Francis radial-flow hydroturbine has the following dimensions, where location 2 is the inlet and location 1 is the outlet: r2 = 6.60 ft, r1 = 4.40 ft, b2 = 2.60 ft, and b1 = 7.20 ft. The runner blade angles are ?2 = 82° and ?1 = 46° at the turbine inlet and outlet, respectively. The runner rotates at n. = 120 rpm. The volume flow rate at design conditions is 4.70 ×106 gpm. Irreversible losses are neglected in this preliminary analysis. Calculate the angle ?2 through which the wicket gates should turn the flow, where ?2 is measured from the radial direction at the runner inlet. Calculate the swirl angle ?1, where ?1 is measured from the radial direction at the runner outlet. Does this turbine have forward or reverse swirl? Predict the power output (hp) and required net head (ft).
9. Find the discharge through a rectangular orifice 2.2 m wide and 1.3 m deep fitted to a casier tank. The water level in a team is 2.5 m above the top edge of orifice. 10. Find the discharge through a rectangular orifice 3.2 m wide and 1.7 m deep fitted to a casier tank. The water level in a team is 3.3 m above the top edge of orifice. Take Cd = 0.6 i 11. Loss of head due to friction is a) Inversely proportional to velocity b) Inversely proportional to hydraulic radius d) Directly proportional to gravitational constant b) Directly proportional to hydraulic radius 12. Which among the following does not depend on the friction factor? a) Pipe diameter b) Fluid density ¢) Viscosity d) Weight 12. How do we calculate losses for a larger range of Reynolds number? a) Scatter chart b) Bar chart ¢) Moody chart d) Column histogram ) is formula for friction factor of circular pipes? 14. Which of the following equations is a result of momentum conservation for inviscid steady flows? a) Bernoulli's…
Two identical centrifugal pumps connected in series are used to pump water between two storage tanks that are open to the atmosphere, through a cylindrical pipe with ID of 0.1 m on both the discharge and suction side. The total equivalent length on the suction and discharge sides are 20m and 40m respectively. The change in static head is 7m. Pump Data: Q( m3/s) 0 0.01 0.02 0.03 0.04 Δh (m) 23 21.5 18.5 11 3 Assume the friction factor f to be 0.02 and is constant throughout the range of flowrates. a) Determine the operating point of the system. b) Determine the power requirement for the pumping system if the pump efficiency is 75%.