Bertolini GIARDINAGGIO Serie Manual De Uso Y Mantenimiento página 59

2. Calculate the flow rate of spraying boom D:
D
Where:
indicates the flow rate of the spraying boom (given in l/min)
"D"
"Du" indicates the flow rate of the individual nozzles (given in l/min)
"Nu" indicates the number of nozzles used
3. Calculate the flow rate of pump Dp:
Where:
"Dp" indicates the flow rate of the pump (given in l/min)
indicates the flow rate of the spraying boom (given in l/min)
"D"
indicates a flow rate increase percentage (normally 10% of the
"Dr"
boom's flow rate) so as to allow the regulating valve to maintain the
pressure correctly
"Da" indicates a flow rate increase percentage (normally 5% of the tank
capacity) so as to allow the agitation system to function correctly.
However, it is worthwhile remembering that these are rough calculation methods and
applicable to spraying machines where the liquid is stirred in the tank solely by the part of
the pump flow that returns. The efficiency of the mixing system often depends largely on
the technical solutions used (mixing points and methods) and on the construction features
(shape, materials) of the tank rather than on the extent of the flow rate available for that
operation.
 
Du Nu
  
Dp D Dr Da
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