Template:Pump2 Setting Data Section

From SysCAD Documentation
Jump to navigation Jump to search

|- | On || Tick Box || This allows the user to disable the Pump. If the Pump is Off then the pressure boost from the Pump = 0. |- | EquipID || Input || This field is optional. The user may type in an unique ID for the Pump. |- | valign="top" rowspan="2" | ProcessType || Isentropic Process || Pressure change across the pump is a nominally isentropic process. |- | Isothermal Process || Pressure change across the pump is a nominally isothermal process. |- | EffIsen || Input || Visible only if ProcessType selected is Isentropic Process - Ratio of enthalpy change for isentropic process to actual enthalpy change. |- | EffIso || Input || Visible only if ProcessType selected is Isothermal Process - Ratio of enthalpy change for isothermal process to actual enthalpy change. |- | colspan="3" font style="background: #ebebeb" | There are two different operating modes for the Pump:

  1. Simple Pumps - these are fixed speed pumps and the user has no control over the speed.
  2. Controlled Pumps - the Pump speed may be changed by the user and the pressure boost changes based on the Pump speed.

|- | valign="top" rowspan="7" | OpType || Fixed Boost (Simple) || The user may specify a fixed pressure boost from the Pump. |- | Fixed ExitP (Simple) || The user may specify a fixed exit pressure from the Pump. |- | Fixed AtmosP (Simple) || The exit pressure from the Pump = atmospheric pressure. |- | Boost Prop to mass Flow (Simple) || The pressure boost from the Pump will be proportional to the mass flow through the Pump. The user may NOT set the Pump speed if this operating mode is used, as the mass flow is the only variable used to calculate pressure boost. |- | Fixed Head (Simple) || The user may specify a fixed head from the Pump. |- | Boost prop to Speed (Controlled) || The pressure boost from the Pump will be proportional to the user defined speed. |- | Head prop to Speed (Controlled) || The head from the Pump will be proportional to the user defined speed. |- |- | colspan="3" font style="background: #ebebeb" | There are several different methods for specifying Pump curves. The curves are specified for maximum pump speed and will be modified for speeds less than the maximum. |- | valign="top" rowspan="5" | OpType || Simple Quadratic (Controlled) || The user may specify Pump head at zero flow and Pump flow at zero head. A monotonic decreasing curve will be fitted to these points. |- | Points Quadratic (Controlled) || The user may specify Pump head at zero flow, runout flow rate (maximum safe flow rate) and Pump head at runout flow rate and at half of the runout flow rate. |- | Points Cubic (Controlled) || The user may specify Pump head at zero flow, runout flow rate (maximum safe flow rate) and Pump head at runout flow rate, one third of the runout flow rate and two thirds of the runout flow rate. |- | User Cubic (Controlled) || The user may specify Pump head at zero flow and coefficient value for terms in the flow, square of the flow rate and cube of the flow rate. |- | Positive Displacement (Controlled)) || The user may specify maximum flow at full speed, maximum head, and other ratios. |- | colspan="3" font style="background: #ebebeb" | Fixed Boost (Simple) The following field is visible with this mode. |- | FixedBoost || Input || The required pressure boost when the Pump is running. |- | colspan="3" font style="background: #ebebeb" | Fixed ExitP (Simple) The following field is visible with this mode. |- | FixedP || Input || The required outlet pressure from the Pump when it is running. |- | colspan="3" font style="background: #ebebeb" | Boost prop to MassFlow (Simple) The following 3 fields are visible with this mode. |- | PressBoost.NoFlowPBoost || Input || The required pressure boost when there in no flow through the Pump. |- | PressBoost.NominalFlow || Input || The required pressure boost when there is nominal flow (specified below) through the Pump. |- | NominalFlow || Input || The nominal flow through the Pump. Used for the pressure boost calculations. |- | colspan="3" font style="background: #ebebeb" | Fixed Head (Simple) The following field is visible with this mode. |- | FixedHead || Input || The required pressure Head when the Pump is running. |- | colspan="3" font style="background: #ebebeb" | Boost Proportional to Speed (Controlled) The following 2 fields are visible with this mode. |- | PressBoost.Running || Input || The required pressure boost when the Pump is running at 100%. |- | PressBoost.Stopped || Input || The required pressure boost when the Pump is stopped. |- | colspan="3" font style="background: #ebebeb" | Head Proportional to Speed (Controlled) The following 2 fields are visible with this mode. |- | Head.Running || Input || The required head when the Pump is running at 100%. |- | Head.Stopped || Input || The required head when the Pump is stopped. |- | colspan="3" font style="background: #ebebeb" | Simple Quadratic (Controlled) The following fields are visible with this mode. |- | CutOffHead || Input || The Pump head at zero flow. |- | A1, A2, A3 || Result || Calculated coefficients of the general cubic pump curve. A0 is the cut off head. |- | ZeroHeadFlow || Input || The Pump flow rate at zero head. |- | colspan="3" font style="background: #ebebeb" | Points Quadratic (Controlled) The following fields are visible with this mode. |- | UnstableOK || Tick Box || The user inputs may generate a Pump curve which is unstable: that is, the head initially increases from the cut off value as flow increases from zero. Tick if this behaviour is as required |- | CutOffHead || Input || The Pump head at zero flow. |- | A1, A2, A3 || Result || Calculated coefficients of the general cubic pump curve. A0 is the cut off head. |- | ZeroHeadFlow || Result || The Pump flow rate at zero head, calculated from input data. |- | HalfFlowHead || Input || The Pump head at half of the run out flow. |- | RunOutHead || Input || The Pump head at the run out flow. This may be greater than zero. |- | RunOutFlow || Input || The Pump maximum safe flow rate. |- | colspan="3" font style="background: #ebebeb" | Points Cubic (Controlled) The following fields are visible with this mode. |- | UnstableOK || Tick Box || The user inputs may generate a Pump curve which is unstable: that is, the head initially increases from the cut off value as flow increases from zero. Tick if this behaviour is as required |- | CutOffHead || Input || The Pump head at zero flow. |- | A1, A2, A3 || Result || Calculated coefficients of the general cubic pump curve. A0 is the cut off head. |- | ZeroHeadFlow || Result || The Pump flow rate at zero head, calculated from input data. |- | OneThirdFlowHead || Input || The Pump head at one third of the run out flow. |- | TwoThirdsFlowHead || Input || The Pump head at two thirds of the run out flow. |- | RunOutHead || Input || The Pump head at the run out flow. This may be greater than zero. |- | RunOutFlow || Input || The Pump maximum safe flow rate. |- | colspan="3" font style="background: #ebebeb" | User Cubic (Controlled) The following fields are visible with this mode. |- | UnstableOK || Tick Box || The user inputs may generate a Pump curve which is unstable: that is, the head initially increases from the cut off value as flow increases from zero. Tick if this behaviour is as required |- | CutOffHead || Input || The Pump head at zero flow |- | A1, A2, A3 || Input || User Calculated coefficients of the general cubic pump curve. A0 is the cut off head. The values of the coefficient must be such that the curve has exactly one positive real root. |- | ZeroHeadFlow || Result || The Pump flow rate at zero head, calculated from input data. |- | RunOutHead || Input || The Pump head at the run out flow. This may be greater than zero. |- | RunOutFlow || Input || The Pump maximum safe flow rate. This should exceed the calculated zero head flow rate. |- | colspan="3" font style="background: #ebebeb" | Positive Displacment (Controlled) The following fields are visible with this mode. |- | MaxHead || Input || The Pump maximum head. |- | MaxFlow || Result || The Pump maximum flow rate at maximum speed |- | MaxVolEff || Input || Max volumetric efficiency. |- | MaxSlip || Result || The Pump maximum slip, which the difference between the zero head flow rate and the maximum head flow rate. |- | CutOffSpeed || Result || The Pump minimum operating speed as a percentage of the pump maximum speed. |- | colspan="3" font style="background: #ebebeb" | With RPM The following fields are visible if this tick box is enabled. |- | RPM.Running || Input || The speed of the Pump in RPM for the values defined by the user (at 100%). |- | RPM.Stopped || Input || The speed of the Pump in RPM when the pump is at 0%. |- | colspan="3" font style="background: #ebebeb" | Stroke Times The following fields are visible if a Controlled mode is chosen. |- | valign="top" rowspan="3" | StrokeTimeMode || None || The actual Pump Speed will change to the required speed with no delay time. |- | Single Stroke Time || There will be a fixed delay between setting the required Pump speed and when the Pump reaches the required speed. |- | Open/Close Stroke Time || The delay between setting the required Pump speed and when the Pump reaches the required speed will be different for starting and stopping settings. |- | StrokeTime || Input || The required delay between setting the required Pump speed and when the Pump reaches the required speed. Visible if Single Stroke Time is selected. |- | OpenStrokeTime || Input || The required delay between setting the required Pump speed and when the Pump reaches the required speed, if the Pump is starting. Visible if Open/Close Stroke Time is selected. |- | CloseStrokeTime || Input || The required delay between setting the required Pump speed and when the Pump reaches the required speed, if the Pump is stopping. Visible if Open/Close Stroke Time is selected.

Retrieved from "https://help.syscad.net/index.php?title=Template:Pump2_Setting_Data_Section&oldid=55278"