# Hydraulics 318 option 6

Affiliates: 0,12 \$ — how to earn
Sold: 1
Refunds: 0

Content: 30222230411463.rar (1211,64 kB)
Loyalty discount! If the total amount of your purchases from the seller olga13 more than:
 600 \$ the discount is 10% 400 \$ the discount is 5% 200 \$ the discount is 3%

# Description

Problem number 4
To fill the pipeline fire reservoir used length L = 300 m. Determine the required pump head when the reservoir elevation above the source Z = 18 m hydraulic gradient i = 0,01, free head at the end of the line NSV = 9.
Problem number 5
To determine the maximum height of the axis of the centrifugal pump above the source water h, if the flow of water from pump Q = 45 l / s, the diameter of the suction pipe d = 200 mm. Vacuum pressure generated in the intake pipe PB = 5 x 104 Pa pressure loss in the suction line of 1 m.
Problem number 6
To preserve the integrity of fire water storage tank in the suction line is equipped with an air tube, the upper section is located at the level of the stock in the tank fire. It is assumed that when the level of water to the fire the stock due to the air-vozniknove of vacuum in the section, which are welded to the tube penetrates into the suction side of the pump, there will be failure of the pump and the water intake end.
Determine whether to save the emergency supply of water if the uro-Wen water is at a height h = 3 m above the axis of the suction pipe. Pipe Diameter D = 125 mm, flow rate Q = 50 l / s. The tube is equipped with a suction valve grid (ξ1 = 6) and has a foot (ξ1 = 0,5).
Objective number 7
Determine an increase in pressure in the pipe length L = 600 m dia-meter d = 0,3 m and a wall thickness δ = 3,3 mm when the hydraulic shock if Q = water flow rate of 20 l / s, the moduli of elasticity of the pipe walls Em = 2 x 1011 Pa and water hedgehog = 2 x 109 Pa. The closing time of the valve in the pipeline with t3 = 2,4.