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HDCS / HDCSM
10
I
II
III
Min.
Min.
12
CIRCULATING PUMP FLOW CURVES
The graphs below can be used to obtain the hydromotive pressure available in the installation at the
boiler output, taking the boiler pressure drop and pump functioning curves into account. These
graphs show three curves, corresponding to the three speeds of the circulating pumps and the boiler
pressure drop.
1-
Constant speed I, II, III (traditional mode):
The pump operates at a constant, pre-set speed.
2-
Variable differential pressure (Δp-v):
The setpoint value of the differential pressure H increases in a straight line between ½H
and H within the permitted flow margin. The differential pressure generated by the pump
is
adjusted to the appropriate setpoint value of differential pressure.
Содержание HDCS 10/15
Страница 26: ...HDCS HDCSM 24 NOTES ...