Geodetic Head

The geodetic head Hgeo is the portion of the head that results from the difference between the elevation of the suction-side and pressure-side liquid levels.

For closed system installations (e.g. heating or cooling circuits), the geodetic head is zero.

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System Curve

The system H-Q curve is essentially a parabolic curve representing the relation between the head (pressure) required to handle the respective rate of flow within a pipe system.

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