Manual for the Design of Pipe Systems and Pumps - GEA ...

Example 1 - Negative supply
Hd,geo = 25 m
Hv,d = 10 m
Hs,geo = 6 m (suction pressure)
= 3 m
H v,s
Hv,d Hv,s H v
= Hd,geo + Hv,d = 25 m + 10 m = 35 m
= Hs,geo + Hv,s + p = 6 m + 3 m + 0 m = 9 m
= H v,d + H v,s = 35 m + 9 m = 44 m
Example 2 - Supply under atmospheric pressure
Hd,geo = 10 m
Hv,d = 5 m
Hz,geo = - 3 m (supply pressure)
= 2 m
H v,s
Hv,d Hv,s H v
= Hd,geo + Hv,d = 10 m + 5 m = 15 m
= Hz,geo + Hv,s + p = -3 m + 2 m + 0 m = -1 m
= H v,d + H v,s = 15 m - 1 m = 14 m
Example 3 - Supply from pressure tank
Hd,geo = 15 m
Hv,d = 3 m
Hz,geo = -2 m
Hv,s = 1 m
p = 8 m
Hv,d Hv,s H v
= Hd,geo + Hv,d = 15 m + 3 m = 18 m
= Hz,geo + Hv,s + p = -2 m + 1 m + (-8 m) = -9 m
= H v,d + H v,s = 18 m + (-9 m) = 9 m
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GEA Tuchenhagen
Fig. 16 - Negative supply
h s,geo
h d,geo
h d,geo
h s,geo
Fig. 17 - Supply under atmospheric pressure
h s,geo
p
Fig. 18 - Supply from pressure tank
h d,geo