8.24. A small blower is required to supply 250 cfm with a static pres- sure rise of 8 in. wg and an air weight density of pg = 0.053 lbf /ft°. Develop a centrifugal flow path for an SWSI configuration. Use the optimal d/D ratio for minimum W1, estimate the slip using the Stodola formula (µE ~ 0.9), assume polytropic density change across the blade row (using Cordier efficiency), and size the impeller outlet width by constraining 25° < B* < 35°.

8.24. A small blower is required to supply 250 cfm with a static pres- sure rise of 8 in. wg and an air weight density of pg = 0.053 lbf /ft°. Develop a centrifugal flow path for an SWSI configuration. Use the optimal d/D ratio for minimum W1, estimate the slip using the Stodola formula (µE ~ 0.9), assume polytropic density change across the blade row (using Cordier efficiency), and size the impeller outlet width by constraining 25° < B* < 35°.

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

V,=5m/s Water enters a 120- horizontal reducing pipe with a velocity of 5m/s and a pressure of 78.48 kNm2. If the diameters atthe entrance and exit sections are 30 cm and 20 cm respecí vely and assuming no degradation of energy within the pipe, find: 60 15. The flow rate passing through the pipe is a) 0.09 m³/s b) 0.1571 m/s c) 0.3534 m/s d) 1.5 m/s 16. The velocity of flow at the exit is a) 11.25 m/s b) 1.77 m/s c) 5.0 m/s d) 25.0m/s 17. The pressure at the exit of the pipe is a) 27.7 kN/m? b) 78.48 kN/m? c) 15.2 kN/m2 d) 81.3 kNm2 18. The horizontal component of the force on the pipe from the water is b) 7315 N a) 7750.7 N c) 5549N d) 9739 N 19. The vertical component of the force on the pipe from the water on pipe is b)4216 N a) 2701 N c) 3459 N d) 5673 N 20. The direction of the resultant force relative to the horizontal direction is b) 23.4. a) 66.6. c) 30. d) 70-
orI (P=880 k9 /m ) Flow under head 3o min Pr Pe (L= 3000 m of Cooling Viscosity a long the PiPo length Will Chanje and equal to o.s Pa-s for ISoo m and 1. 14Pa.s for the Yemain length of PiPe Prove tha t the flow is laminar and find the f low ra te . , D= 0- 3 m) becanse %3D
The pipe diameter is 800mm. The ultrasonic measurements recorded are: Pipe centerline velocity = 4.9 m/s %3D Velocity at radius 100mm = 4.4 m/s %3D Solve for the Friction factor f using turbulent flow profile.
In an annular section built with commercial steel pipe, the outer diameter is said to be 13 inches and inside a commercial steel pipe the inner diameter is found to be 23 inches which carries a water flowrate of 500L/sec. The total length of the section is 8m. Calculate the frictional loss in meters of water at a temperature of 60F
Q2. Flowrate of water through bend pipe (90°) is 0.21 m/s. The pipe diameter at the inlet is 150 mm and the outlet diameter is 75 mm. The outlet is higher than the inlet by 2 m. Frictional losses in the pipe is equal a loss factor of 0.5 applied to the inlet velocity head. The pressure head at the inlet is 8.6 m and the volume of water in the bend is 0.6 m?. Calculate the resultant force and its direction.
The gage pressure (psig) at point a is nearest (a) 13.7 (b) 14.7 (c) 101.3 (d) 0 (e) 1 Oil a 3 in SG = 0.69 SThe gage pressure (psig) at point c is nearest (a) 57.2 (b) 1.4 (c) 6.7 (d) 0.4 8 in Water The absolute pressure (psia) the natural gas pipeline is nearest h, = 22 in (a) 8.4 (b) 65 (c) 9 (e) 23 16 in SThe gage pressure osig) in the natural gas pipeline is Natural gas Dif the pipeline pressure was increased by 50%, what cost- effective manometer modification(s) might be needed? (b) More mercury, less oil (c) Add 2 more manometer loops (d) Replace the manometer with a high-pressure gage (e) Rotate the gas line to a vertical alignment Mercury SG = 13.6
Design an ESP that is 98,5% efficient in treating 8050 m3/min of gas, Assume the plates are 6.1 m high and 4.1 m long. The effective drift velocity of the particles is 5.2 m/imn. The design should include the plate design (total area, layout, number), channel width, gas velocity, number of ducts, aspect ratio, number of mechanical fields and number of electrical sections total, and actual area.
Question In fully developed laminar flow in a circular pipe, if the velocity at midway between the wall surface and the centerline is measured to be 6 m/s, then the velocity at the centre of pipe is
For the selection of friction factor, f from the Moody diagram, select the most appropriate answer. O For smooth-walled pipes, we need to know Re only. O All the answers are correct. O For laminar flow, we need to know Re only. O For rough turbulent flow, we need to know Re vs ks/D.
Q3. SAE 30 oil (Sp. Gr. =0.833) with a dynamic viscosity 0.28 N.S/m? flows in a 4-cm-diameter pipe which is inclined with an angle 37°. For the pressure measurement shown, determine A. Whether the flow is up or down The flow rate in m'/h C. The shear stress and velocity 1 cm from the boundary Draw the shear stress and velocity profile with the section of the pipe. В. D. P-180 kPa P- sOokPa 15m 20m
Solve the pipe network shown in the figure. The 12 in and 16-in are of new cast iron, while the 18 and 24 in are of average concrete. Assume n=2.0 and use the values of f from figure 8.11 for complete turbulence. If the pressure at h is 80 psi, find the pressure at f
Problem 2: A centrifugal pump with an overall efficiency of 0.56 rotates at 1650 rpm. The flow is purely radial at the inlet of the rotor. The pump has the following characteristics: Flow rate Inlet diameter Outlet diameter Head Width at the inlet Width at the outlet Leakage Mechanical loss Blade angle at the outlet The water density Atmospheric pressure |Q=72 L/s DI = 90 mm D2 = 280 mm H= 25m bl -20 mm b2 = 18 mm q =2 L/s Pm = 1.41 kW B2 = 35 p = 998 kg/m³ 101 kPa