A hydraulic pump is shown in the following Figure, flow rate is 25 L/min, the diameter of suction pipe is 25mm, and the suction port of pump is higher than the oil surface of tank, the height is h, Kinematic viscosity of oil is 30x10 m²/s, density of oil is 900kg/m³. Only the pressure loss along the straight suction pipe with length his 75 considered, if the vacuum degree at the inlet of pump is not bigger than 4500Pa (2=- R₂ a = 2, g=9.8) (1) Calculate the flow velocity in the suction pipe; (2) Judge the flow state in suction pipe; (3) Calculate the pressure loss along the straight suction pipe; (4) Calculate the oil absorption height h.

A hydraulic pump is shown in the following Figure, flow rate is 25 L/min, the diameter of suction pipe is 25mm, and the suction port of pump is higher than the oil surface of tank, the height is h, Kinematic viscosity of oil is 30x10 m²/s, density of oil is 900kg/m³. Only the pressure loss along the straight suction pipe with length his 75 considered, if the vacuum degree at the inlet of pump is not bigger than 4500Pa (2=- R₂ a = 2, g=9.8) (1) Calculate the flow velocity in the suction pipe; (2) Judge the flow state in suction pipe; (3) Calculate the pressure loss along the straight suction pipe; (4) Calculate the oil absorption height h.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

A hydraulic pump is shown in the following Figure, flow rate is 25 L/min, the diameter
of suction pipe is 25mm, and the suction port of pump is higher than the oil surface of
tank, the height is h, Kinematic viscosity of oil is 30×10m²/s, density of oil is
900kg/m³. Only the pressure loss along the straight suction pipe with length his
75
considered, if the vacuum degree at the inlet of pump is not bigger than 4500Pa (λ =
R₂
a = 2, g=9.8)
(1) Calculate the flow velocity in the suction pipe;
(2) Judge the flow state in suction pipe;
(3) Calculate the pressure loss along the straight suction pipe;
(4) Calculate the oil absorption height h.
1

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