On the Friction-Loss of Head and Pressure Vibration in Polyethylene Flexible Pipe for Sprinkler Irrigation

Abstract

Friction loss of head of polyethylene flexible pipe for sprinkler irrigation (d=3.81cm, l=38.7m, trade name s polynite) was tested.
Fig. 3 shows the result obtained in comparison with other experiments (eq. (3) or (4)) for turbulent flow in smooth pipe. Eq. (5) is the experimental formula.
From fig. 3, it is distinct that head loss due to friction of polyethylene pipe is less than any other ones, i.e. polyethylene pipe has a extreme hydraulic property.
In addition that, it is so light, flexible and excellent to anti-weather that we can most suitably use it for portable sprinkler irrigation.