In our area we do not have electricity in our farms, we generally use 5HP Diesel pump set to irrigate our fields. Our main crops
are Maize and Paddy.
I checked with 3 suppliers of Rain gun and out of them 2 said Rain Guns can not be run on Diesel pumpset, because the diesel
machine is not able to generate enough pressure due to lower rpm of such machines.
The alternative suggested by them was electric motor running on diesel generator.
However this is not economically viable due to high running cost. Since starting up an electric motor requires almost 3 times more power at start-up the generator will need to be of higher capacity and hence consume more diesel.
One of the suppliers mentioned rain gun can run on 10 HP and above diesel pump however the head of pump should be minimum 40 meters. There are not many agricultural pumps with that capacity. One of the pumps that i was able to find is attached.
I want to understand why a Diesel Engine will not be able to run this pump and generate enough pressure i.e. around 3 kg/m
to run an Rain Gun.
Will not pressure being generated also be dependent upon water table. Fortunately water table in our area is very high. We
are able to find water at 10-15 meters.
I am very keen to try out rain gun on our farm however this constraint regarding electric motor is the obstacle for which i need to find a solution.
Kirloskar Pump - CE Front - Back.pdf (333 KB)