Principles

Question 1

1st principle of friction loss

Answer 1

‘Doubling the length of hose, doubles the friction loss.’

Question 2

2nd principle of friction loss

Answer 2

‘If flow rate is doubled the friction loss will be four times greater’
FL varies with the square of the increase.
Double flow=4 times original FL
Triple flow=9 times original FL

Question 3

3rd principle of friction loss

Answer 3

FL in a hose will decrease when the diameter of the hose is increased

Question 4

4th principle of friction loss

Answer 4

Velocity of water through a hose line, not pressure, causes FL.

FL is velocity based, meaning the faster you move water, the more FL that occurs.