Riser diameter and its effect on impact sprinkler performanc / [electronic resource].

Year book of Misr Society of Agricultural Engineering : The 20 th. Annual Conference of the Misr Society of Agricultural Engineering "Agricultural Engineering and Country Challenges"

Includes references.

The laboratory experiments carried out at the National Irrigation
Laboratory of Agricultural Engineering Research Institute. At this study
we evaluate two types of application for impact sprinkler (24 mm
diameter), first type: the riser highest was 0.75 m, a diameter 2-1 mm
(withollt header), second type the riser highest was 0.25 m, a diameter 24
mm (header) + 0.5 m, a diameter 16 mm (with header). The sprinkler was
evaluated under different operating pressure 1.75, 2.00, 2.50 and 3.00
barandformeasuringsprinklerflow rates anddeterminingprecipitation
rate andflow rate. Thefollowing results werefolmd:
1-At using riser highest 0.75 m, a diameter 24 mm (without header) the
flow rate were 1.20, 1.41, 1..:/9 and 1.62 m3/h, at lIsing riser highest
0.25 m, a diameter 24 mm (header) + 0.5 m, a diameter 16 mm (with header) the flow rate were 1.30, 1.44, 1.50 and 1.62 m3/h, under operating pressure 1.75,2.00,2.50 and 3.00 bar, respectively.
2- At using riser highest 0.75 m, a diameter 24 mm (without header) the
precipitation rate were 14.80, 15.37, 16.49 and 17.65 mm/h, at lIsing
riser highest 0.25 m,. a diameter 24 mm (header) + 0.5 m, a diameter
16 mm the precipitation rate were 15.85, 16.71, 17.23 and 19.77 mm/h
(with header) under operating pressure 1.75, 2.00, 2.50 and 3.00 bar,
respectively.

Summary in Arabic