hergom H-03 Instructions D'installation, De Service Et De Maintenance page 20

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7.4. CHARACTERISTICS OF THE FAN, CURVE.
The longitude and diameter of the air
conduction tubes influence fuel wastage and
when the volume of flow of useful air
transported decreases, fuel wastage
increases, for this reason this must be taken
into account when creating the air system. To
do this correctly the ventilator curve is
needed. On the ordinates, fuel wastage is
represented in mm.c.a. and the volume of
3
flow on the horizontal axis in m /h.
Fig.- 10
20