recordGenericPump
Generic coefficient record for centrifugal pumps
Extends from Modelica.Icons.Record.
Information
The following figures show the normalized head h_n = h/h_peak, the normalized power P_n = P/P_peak and the normalized efficiency eta/eta_peak
at reference speed w = w_ref
in dependency of the normalized volume flow rate V_flow_n = V_flow/V_flow_peak.
Thereby h_peak, P_peak and V_flow_peak are head, power and volume flow rate at the peak efficiency eta_peak.
h_0n ≈ 1.273 ± 0.128, min 1.101, max 1.516is the normalized head at zero volume flow rateV_0n ≈ 1.946 ± 0.087, min 1.784, max 2.090is the normalized volume flow rate at zero headP_0n ≈ 0.499 ± 0.099, min 0.372, max 0.677is the normalized power at zero volume flow rate
Colors refer to different pumps. A mean centrifugal pump curve is displayed as think solid.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Density | rho_ref | 1000 | Reference density |
| SI.AngularVelocity | w_ref | 314.1592653589793 | Reference angular velocity |
| SI.VolumeFlowRate | V_flow_peak | 0 | Volume flow rate at peak efficiency |
| Boolean | setHead | true | = true, if reference head shall be given (= false, if reference pressure rise shall be given instead) |
| SI.Height | head_peak | 0 | Head at peak efficiency |
| SI.PressureDifference | dp_peak | 0 | Pressure rise at peak efficiency |
| Real | eta_peak | 0.8 | Peak efficiency |
| Real | V_0n | 1.946 | Normalized flow V_flow/V_flow_peak at zero head (see doku) |
| Real | h_0n | 1.273 | Normalized head h/h_peak at zero flow (see doku) |
| Real | P_0n | 0.499 | Normalized power P/P_peak at zero flow (see doku) |
| SI.Height | head_ref_internal | if setHead then head_peak else dp_peak/(Modelica.Constants.g_n*rho_ref) |
Revisions
-
May 2025, by Raphael Gebhart (raphael.gebhart@dlr.de):
Initial version.