A 90° elbow as shown in Figure Q2b is used to direct water flow at a rate of 30 kg/s in a horizontal pipe upward. The diameter of the pipe is 10 cm and the elbow discharges water into the atmosphere and thus the pressure at the exit is the local atmospheric pressure. The elevation difference between the centers of the exit and the inlet of the elbow is 35 cm. The weight of the elbow and the water is assumed to be negligible. i. Apply a proper form of energy conservation principle, determine the anchoring force needed to hold the pipe bend in place. ii. Then, recommend a suitable angle in between 20° to 120° from the flow direction to reduce the anchoring force. Justify your recommendation. Figure Q2b 35 cm Water 30 kg/s Figure Q2b

A 90° elbow as shown in Figure Q2b is used to direct water flow at a rate of 30 kg/s in a horizontal pipe upward. The diameter of the pipe is 10 cm and the elbow discharges water into the atmosphere and thus the pressure at the exit is the local atmospheric pressure. The elevation difference between the centers of the exit and the inlet of the elbow is 35 cm. The weight of the elbow and the water is assumed to be negligible. i. Apply a proper form of energy conservation principle, determine the anchoring force needed to hold the pipe bend in place. ii. Then, recommend a suitable angle in between 20° to 120° from the flow direction to reduce the anchoring force. Justify your recommendation. Figure Q2b 35 cm Water 30 kg/s Figure Q2b

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

The water tank in the figure below stands on a frictionless cart and feeds a jet of diameter 4 cm and velocity 6.2 m/s, which is deflected 63° by a vane.
A centrifugal pump is required to handle 50 lit/sec of gasoline against a net pressure of 4 kg/cm², Determine the head in m of liquid and the HP required by the pump, if its overall efficiency is 62%. Take the specific gravity of gasoline as 0.7. (57 and 43) A centrifugal pump draws water from a sump through a vertical 15 cm pipe. The pump has a horizontal discharge pipe 10 cm diameter which is 3.5 m above water level in the sump. While pumping 35 lit/sec, gauges near the pump at entrance and discharge read kg/cm respectively. The discharge gauge is 0.5 m above the suction gauge. Determine the horsepower output of the pump. 0.35 kg/cm and+1.8 (10.82) - To p. edict the performance of a loge centrifugal pump, its model, having р. the following specification, was made: P=24 IIP H=8 m N=925 rpm Diameter of model pump impeller is 9 times smaller than that of the prototype. The prototype pump has to work against a head of 30 m. Find its working speed and HP required to drive it. Determine…
3.) An air compressor handles 8.5 m’/min of with a density of 1.26 kg/m³ and a pressure of 1 atm, and it discharges at 445 kPa (gage) with a density of 4.86 kg/m³. The change in specific internal energy across the compressor is 82 kJ/kg, and the heat loss by cooling is 24 kJ/kg. Neglecting changes in kinetic and potential energies, find (a) the work in kJ/kg and (b) the power in kW.
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. 35 L/s 15 L/s 45 L/s 25 L/s
A nozzle 12.5 cm by 5 cm is trained vertically upward. At a point 30 cm below the tip, the pressure is maintained at 235 KPa. If the available power in the jet is 8000 watts, find the height through which the jet of water will rise (neglecting air friction), the coefficient of velocity, and the head loss on the nozzle.
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 your free body diagram.a.35 L/s b.25 L/s c.15 L/s d.45 L/s
(4) A water hose connected to a nozzle is used to fill a 10 L container. The internal diameter of the hose is 2 cm and the nozzle exit has an inner diameter of 1.7 cm. It takes 30 s to fill up the container. If the inlet pressure is 2 atm and the nozzle exit is 0.8 m above the hosea. What is the velocity (m/s) of water at the outlet stream and at the inlet stream?b. What is the water pressure (atm) at the outlet stream c. What is the mass flow rate of water (kg/s)?
The discharge pressure of an air compressor is 6 times the suction pressure. If volume flow rate at the suction is 0.8 cubic meter per second, what is the compressor power (kW) for n = 1.38 and suction pressure is 101 kPaa?
A closed vessel contains water up to a height of 2 m and over the water surface there is air having pressure 8.829 N/cm^2 above atmospher. At the bottom of the vessel there is an orifice of diameter of 15 cm. Find the rate of flow of water from orifice. Take Cd=0.60. 125.75 L/s 135.75 L/s 115.75 L/s 155.75 L/s
Water from a reservoir is pumped over a hill through a pipe 900 mm in diameter and a pressure of one kg/cm? is maintained at the pipe discharge where the pipe is 85 m from the pump centerline. The pump have a positive suction head of 5 m. Pumping rate of the pump at 1000 pm is 1.5 m/sec. Friction losses is equivalent to 3 m of head loss. What amount of energy must be furnished by the pump in KW?
A 10 ft diameter tank with a quick opening value to a sump has a 10 ft depth of liquid. How long does it take to drain the tank if the valve is assumed to be equivalent to a 4 in Diameter orifice? The liquid density is 60 lb/ft3 700 gpm of water are being discharged by a centrifugal pump 5 ft above the pump inlet. The inlet pressure is 4 inHg above atmospheric and the discharge pressure is 29 psia. If the pump has an 8 in inlet diameter and 4 in discharge diameter.Calculate (a) the pump efficiency (b) the new flowrate and brake horse power if the pump speed is increased from 1600 to 3200 rp,. Assume the pump input is 8 Hp For measuring liquid level in an inaccessible underground tank, the scheme as shown in the figure below is employed. The manometer fluid has a density of 2.5 g/ml while that of the liquid in the tank is 1.05 g/ml. Air flow is controlled so that the frictional, contraction, and expansion losses in the feed line amount to 97 ft. Velocity in 1/4" tubing is 2.13 ft/s…
Water is pumped up to 8 m height. The pump operates in steady state, and it is perfectly insulated. Pressure increase over the pump is 850 kPa. The velocity of the water at the pump inlet w is 1 m/s and at the outlet w₂7 m/s. The diameter of the inlet d' is 0.12 m. The water is saturated at the inlet, and the temperature Tis 18 °C. The density of the water is assumed to be constant. The efficiency of the pump n is 77.0 %. Reduce the equation for energy balance with the given assumptions, and calculate the power of the pump and the fraction of kinetic energy. 0 = P + + qmh₂ h₁ + Read from h,s-chart Specific volume of inlet water v Power of pump P 2 w² - w² 2 The share of kinetic energy of the total pump power -2₁)) + g(²₂ — Z₁)