5.4 Calculation of selecting nozzles, hydraulic calculations and design pipeline network
5.4.1.Lua select nozzle
Specifications of rain nozzle includes: magnitude raindrops, spray radius range, traffic nozzle rain, rain intensity of the hose.
- the magnitude raindrops:
type nozzles in irrigation systems to ensure the required magnitude smaller raindrops not ruin crops. Raindrop size depends on the working pressure of the hose (H) and diameter hose (d). For large raindrops indicating the standard size relationship H / d = k. To ensure that the requirements of the vegetables, then k> = 4000 (ISO 9170-2012).
- Spraying radius of the nozzle (R):
The radius of the nozzle Spraying is the distance from the nozzle to the point spraying farthest. Radius values of rain depends on the working pressure of the hose, the magnitude and direction of the wind velocity, radius magnitude nozzles, nozzle angle with the body lying ngangV (28o - 35o)
- Save spraying of the nozzle (q)
Flow spraying of nozzles depends on nozzle diameter (d) and the working pressure at the nozzle
Based on the technical characteristics of the type of nozzle rain, select hose Gyronet spray called Turbo Rainport form by cave Netafim (Tsranel) production with specifications provided by the manufacturer as follows:
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