Buildings.Fluid.Movers.SpeedControlled_y fan(
    redeclare package Medium = Medium,
      per(pressure(V_flow={0,m_flow_nominal,2*m_flow_nominal}/1.2,
                   dp={2*dp_nominal,dp_nominal,0}))) "Fan";

record Generic "Generic data record for movers" extends Modelica.Icons.Record; // Pressure requires default values to avoid in Dymola the message // Failed to expand the variable pressure.V_flow. parameter Buildings.Fluid.Movers.BaseClasses.Characteristics.flowParameters pressure( V_flow = {0, 0}, dp = {0, 0}) "Volume flow rate vs. total pressure rise"; final parameter Modelica.Units.SI.VolumeFlowRate V_flow_max= if havePressureCurve then (pressure.V_flow[end] -(pressure.V_flow[end] - pressure.V_flow[end - 1]) /(pressure.dp[end] - pressure.dp[end - 1]) * pressure.dp[end]) else 0 "Volume flow rate on the curve when pressure rise is zero"; final parameter Modelica.Units.SI.PressureDifference dpMax( displayUnit="Pa")= if havePressureCurve then (pressure.dp[1] -(pressure.dp[1] - pressure.dp[2]) /(pressure.V_flow[1] - pressure.V_flow[2]) * pressure.V_flow[1]) else 0 "Pressure rise on the curve when flow rate is zero"; // Efficiency computation choices parameter Buildings.Fluid.Movers.BaseClasses.Types.HydraulicEfficiencyMethod etaHydMet= Buildings.Fluid.Movers.BaseClasses.Types.HydraulicEfficiencyMethod.EulerNumber "Efficiency computation method for the hydraulic efficiency etaHyd"; parameter Buildings.Fluid.Movers.BaseClasses.Types.MotorEfficiencyMethod etaMotMet= if powerOrEfficiencyIsHydraulic then Buildings.Fluid.Movers.BaseClasses.Types.MotorEfficiencyMethod.GenericCurve else Buildings.Fluid.Movers.BaseClasses.Types.MotorEfficiencyMethod.NotProvided "Efficiency computation method for the motor efficiency etaMot"; parameter Boolean powerOrEfficiencyIsHydraulic=true "=true if hydraulic power or efficiency is provided, instead of total"; // Arrays for efficiency values parameter Buildings.Fluid.Movers.BaseClasses.Characteristics.efficiencyParameters efficiency( V_flow={0}, eta={0.7}) "Total or hydraulic efficiency vs. volumetric flow rate"; parameter Buildings.Fluid.Movers.BaseClasses.Characteristics.efficiencyParameters motorEfficiency( V_flow={0}, eta={0.7}) "Motor efficiency vs. volumetric flow rate"; parameter Buildings.Fluid.Movers.BaseClasses.Characteristics.efficiencyParameters_yMot motorEfficiency_yMot(y={0}, eta={0.7}) "Motor efficiency vs. part load ratio yMot, where yMot = WHyd/WMot_nominal"; // Power curve // It requires default values to suppress Dymola message // "Failed to expand the variable Power.V_flow" parameter Buildings.Fluid.Movers.BaseClasses.Characteristics.powerParameters power( V_flow={0}, P={0}) "Power (either consumed or hydraulic) vs. volumetric flow rate"; // Peak condition parameter Buildings.Fluid.Movers.BaseClasses.Euler.peak peak( V_flow=peak_internal.V_flow, dp=peak_internal.dp, eta=peak_internal.eta) "Volume flow rate, pressure rise, and efficiency (either total or hydraulic) at peak condition"; final parameter Buildings.Fluid.Movers.BaseClasses.Euler.peak peak_internal= Buildings.Fluid.Movers.BaseClasses.Euler.getPeak(pressure=pressure,power=power) "Internal peak variable"; // The getPeak() function automatically handles the estimation of peak point // when insufficient information is provided from the pressure curve. // Motor parameter Boolean motorCooledByFluid=true "If true, then motor heat is added to fluid stream"; parameter Modelica.Units.SI.Power WMot_nominal= if max(power.P)>Modelica.Constants.eps then if powerOrEfficiencyIsHydraulic then max(power.P)*1.2 else max(power.P) else if havePressureCurve then V_flow_max/2 * dpMax/2 /0.7*1.2 else 0 "Rated motor power"; parameter Modelica.Units.SI.Efficiency etaMot_max(max=1)= 0.7 "Maximum motor efficiency"; final parameter Buildings.Fluid.Movers.BaseClasses.Characteristics.efficiencyParameters_yMot motorEfficiency_yMot_generic= Buildings.Fluid.Movers.BaseClasses.Characteristics.motorEfficiencyCurve( P_nominal=WMot_nominal, eta_max=etaMot_max) "Motor efficiency vs. part load ratio"; final parameter Boolean haveWMot_nominal=WMot_nominal > Modelica.Constants.eps "= true, if the rated motor power is provided"; // Speed parameter Real speed_nominal( final min=0, final unit="1") = 1 "Nominal rotational speed for flow characteristic"; parameter Real constantSpeed(final min=0, final unit="1") = 1 "Normalized speed set point, used if inputType = Buildings.Fluid.Types.InputType.Constant"; parameter Real[:] speeds(each final min = 0, each final unit="1") = {1} "Vector of normalized speed set points, used if inputType = Buildings.Fluid.Types.InputType.Stages"; // Set a parameter in order for // (a) FlowControlled_m_flow and FlowControlled_dp to be able to set a reasonable // default pressure curve if it is not specified here, and // (b) SpeedControlled_y to be able to issue an assert // if no pressure curve is specified. final parameter Boolean havePressureCurve= sum(pressure.V_flow) > Modelica.Constants.eps and sum(pressure.dp) > Modelica.Constants.eps "= true, if default record values are being used"; end Generic;