z=174 m z=152 m H z=104 m B z=91 m Pump G C F 2. A pump is used to deliver water from a reservoir to a large tank for a flowrate of 1310 L/s at 20 °C. The connecting pipe connects the reservoir at B with a square- edged entrance. From B to C, the pipe is 760 m long and has three gate valves and two 90° elbows. Gage pressure at C is 197 kPa. From F to G, the pipe is 760 m long and contains two gate valves (Kg,v=0.136), four 90° elbows (K90=0.51) and connects the tank with an exit (Kext=1). All pipe is 508 mm in diameter (D) and made by cast iron (e = 0.26 mm). 1) Calculate the average velocity of water in the pipe. (10 pts) 2) Calculate the gage pressure at F. (15 pts) 3) If the pump's efficiency is 80%, calculate the power input to the pump. (10 pts) 4) If the shear stress can be calculated using the equation Д др T = 4 дх др and ≈pg дх hL,major L Calculate the average wall shear stress in section F-G. (15 pts)

z=174 m z=152 m H z=104 m B z=91 m Pump G C F 2. A pump is used to deliver water from a reservoir to a large tank for a flowrate of 1310 L/s at 20 °C. The connecting pipe connects the reservoir at B with a square- edged entrance. From B to C, the pipe is 760 m long and has three gate valves and two 90° elbows. Gage pressure at C is 197 kPa. From F to G, the pipe is 760 m long and contains two gate valves (Kg,v=0.136), four 90° elbows (K90=0.51) and connects the tank with an exit (Kext=1). All pipe is 508 mm in diameter (D) and made by cast iron (e = 0.26 mm). 1) Calculate the average velocity of water in the pipe. (10 pts) 2) Calculate the gage pressure at F. (15 pts) 3) If the pump's efficiency is 80%, calculate the power input to the pump. (10 pts) 4) If the shear stress can be calculated using the equation Д др T = 4 дх др and ≈pg дх hL,major L Calculate the average wall shear stress in section F-G. (15 pts)

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

What is the maximum flow rate Q1 and minimum flow rate Q2? In m3/h
The suction water level of a reservoir A is 5m above pump centerline and discharge water level is 50m above pump centerline. The discharge is 2m with suction pipe of 100mm diameter and 90mm diameter discharge pipe. The total head loss is 50% of the velocity head a suction pipe. If pump runs at 360rpm, find the torque developed by the shaft of motor if pump efficiency is 76%. ANSWER: 5.4 KN-m
Design a pipe system to supply water at 20° C from the elevated tank to the demand point at the discharge rate of 2.5 m3/s (see figure below). Take these steps:1. Identify your system elements. You have 400 m long pipe system that has one 90° bends. 2. Account for minor losses caused by the bend (use K = 0.18), by the valve (use K = 0.2), entrance loss from elevated tank to pipe (use K = 1) and exit loss from pipe to demand point (use K = 0.5) 3. Set the Energy equation to find the total head loss magnitude (hL). 4. Break down the total loss into friction (hf) and minor losses (hM). Use D-W and minor loss equations to find a relationship between Diameter (D) and Friction Factor (f) (both are unknown). In the equation, replace velocity with Q/A to have only D and f as unknowns. 5. Your other equation to find the 2 unknowns is the Moody diagram. Because both equations are non-linear, numerical iteration is needed. After contacting a nearby vendor, you realize that a convenient pipe…
M1
I need the answer as soon as possible
Water at 20 oC is pumped at a rate of 9.0 m3/h from a large tank resting on the floor(open to the atmosphere) to the top of an absorption tower, 5.0 m above the floor. Thedischarge is at atmospheric pressure. The pipe is 50 mm ID, and the friction losses are 2.5J/kg. The pump can supply 0.1 kW to the fluid. Find the minimum water level in the tank thatyou can achieve with a pump with that power.
A pump is required to transfer water at the rate of 350 kg/s from an open sump to an open storage tank located 30m above the pump. The sucLon pipe is 350mm in diameter and 12m in length and the delivery pipe is 550mm in diameter and 40m in length. Calculate:(a) The maximum height at which the pump may be placed above the sump, so that pressure at the inlet is not less than -80 kPa (gauge) (b) the energy to be supplied by the pump per unit mass of water transferred (c) The input power required by the pump, which is 60 % efficient
4. A venturi meter with a 10.16 cm throat is installed in a 15.24 cm pipe which is inclined upward at an angle of 45 degrees to the horizontal. If the distance between the pressure tape along the pipe is 1.5 m, the differential pressure is 70kPa, and the water temperature is 70°C, what is the discharge of water in m3/sec?. Assume coefficient of 0.985.
Two chambers, Chamber 1 and Chamber 2 where pressure at chamber 1 p1=70 kPa, at chamber 2 the pressure p2 = 5kPa. There is an orifice between the two chambers with diameter of 6 cm, Cc= 1.00, Cv=0.95 and the head of the liquid(s=2.50) over the orifice is 1.80 m. Find the actual flow rate through the orifice. Include the free body diagram if needed. a.45 L/s b.15 L/s c.35 L/s d.25 L/s
Water at 20°C is being pumped from tank 1 to tank 2 with given conditions. Calculate the power of pump used in the system. (Both tanks are open to atmosphere). Volume flow rate = 10L/s Pipe material = cast iron
Tank 1 Tank 2 g Question 1 Consider the flow of water (p= 10³ kg/m³, u = 10³ Pa-s) from tank 1 to tank 2. A centrifugal pump is installed in this piping system with length L = 300 m and diameter D = 40 cm cast-iron pipe. The water surface of tank 1 is 15 m higher than the water surface of tank 2. You may neglect minor losses but not major losses. The gravity cannot be neglected. Assume steady-state and no friction in the tanks. (a) Simplify the equation of the system curve Ap vs Q. Do not place numerical data. (b) Plot the system curve Ap vs Q (0 ≤Q≤2 m³/s). (c) Find the volumetric flow rate when the pump is not operating. (d) Find the power supplied to the water and to the pump if n = 0.9 and 1 m³/s. (e) Consider a pump: Ap = 106 105 Q², where Ap in Pa and Q in m³/s. Find the operating point. What is the minimum and maximum volumetric flow rate that this pump can deliver?
A water pump is used to pump the water to a large water tank as shown in Figure. The free surfaces of both water tanks are under atmospheric pressure. Dimensions and local losses are given below. The flow rate of the pump is determined as 16.2 L/min. Calculate the required manometric head of the pump and the required motor power if the total efficiency is 76.2 percent. The water at 10oC. density r = 996.2 kg/m3, dynamic viscosity µ = 1.362x10-3kg /ms. z2-z1 = 7.62 m (height difference), D = 2.62 cm (pipe diameter), L = 176.2 m (total pipe length), ɛ = 0.2562 mm (pipe roughness value) Local loss coefficients: KL,inlet = 0.562 (pipe inlet) KL,valve = 16.2 (valve), KL,elbow = 0.9262 (there are 5 elbows totally in pipe line), KL,outlet = 1.0562 (pipe outlet).