EFPLAB1: Lab Experiment Pedal Pump
European style Energy Grade Line Diagram
Pump frequency: Hz ( l/s)
Loss coefficient throttle valve: [-]
Geodetic suction height Δz: m
Scheme pedal pump :
specific
energy:
energy:
Formula:
Formula at the position n = :
Result:
Total
etot
etot
\(\frac{p_{amb}}{\rho}+e_{pot,1}+e_W\)
105
Pa
/
998
kg⁄m3
+
J⁄kg +
J⁄kg
J⁄kg
Work
eW
eW
$$e_{v,Pipe,8}+e_{v,Comp.,8} $$ $$+e_{kin,8} +\Delta e_{ pot,1-8}$$
J⁄kg
+
J⁄kg
+
J⁄kg
+
J⁄kg
J⁄kg
Potential
epot
epot
\(g\cdot z_n\)
9.81
m⁄s2
∙
m
J⁄kg
Kinetic
ekin
ekin
\(\frac{v^2_n}{2}\)
(
m⁄s
) 2
/
2
J⁄kg
Pipe friction losses
eL,Pipe
eL,Pipe
\(\sum\limits_{n=3}^{n}\left[\zeta_{Pipe,n}\cdot\frac{v^2_n}{2}\right]\)
∙
(
m⁄s
) 2
/
2
J⁄kg
Component
losses
eL,Comp.
losses
eL,Comp.
\(\sum\limits_{n=1}^{n}\left[\zeta_{Comp.,n}\cdot\frac{v^2_n}{2}\right]\)
∙
(
m⁄s
) 2
/
2
J⁄kg
Pressure
ep
ep
$$e_{tot}-e_{pot}-e_{kin}$$ $$ -e_{v,Pipe}-e_{v,Comp.}$$
J⁄kg
-
J⁄kg
-
J⁄kg
-
J⁄kg
-
J⁄kg
J⁄kg