What is nozzle efficiency

Delivery rate [l / min]

Q = dp² x π x s x nk x zp x λ / 4,000,000

Pump output [kW]

P = p x Q / 600 x η

mean piston speed [m / s]

V = s x n / 3.0000

Rod force 346

F = dp² x π x p / 4 x 12.74

Torque [Nm]

M = P x 9,550 / n

Nozzle diameter [mm]

dD. = √Q / (0.665 x μ x φ x p x zD.)

Recoil force 346

F.R. = 0.15 x p x dD.² x µ

Nozzle throughput [l / min]

Q = 0.665 x μ x φ x dD.² x p x zD.

Flow velocity [m / s]

v = Q x 21.2 / d²

Pressure loss [bar]

      Δp = 1 x Q² x 44 / dl5

Pipe wall thickness min. [Mm]

k = p x dl / (20 x σperm)

Size and unity
Q=Delivery volume [l / min]
dp=Plunger diameter [mm]
s=Plunger stroke [mm]
nk=Crankshaft speed [1 / min]
zp=Number of plungers [pieces]
λ=Degree of delivery [0.85 .... 0.95]
P.=Pump power kW
η=Pump efficiency [0.85 ..... 0.95]
p=Pressure [bar]
V=Piston speed [m / s]
F.=Rod force 346
M.=Torque [Nm]
n=Drive speed [1 / min]
dD.=Nozzle diameter [mm]
μ=Nozzle efficiency [0.55 .... 0.95]
φ=Speed ​​number [0.97 .... 0.99]
zD.=Number of nozzles [pieces]
F.R.=Recoil force 346
v=Flow velocity [m / s]
Δp=Pressure loss [bar]
l=Cable length [m]
dl=Cable diameter [mm]
k=Pipe wall thickness [mm]
σperm=Yield strength permissible [N / mm²]

Conversion values
1 kW=1.36 hp
1 hp=0.74 kW
1 bar=0.10 N / mm²
1 bar=1,000,000 Pa
1 bar=14.50 psi
1 psi=0.00689 bar