Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer

Information

Package Content

Name	Description
EvenGap	Input for even gap
General	Input for generic correlation
HelicalPipe	Input for helical pipe
Plate	Input for plate
StraightPipe	Input for straight pipe
TwoPhaseFlowHT_IN_con	Base record for two phase heat transfer coefficient
TwoPhaseFlowHT_IN_var	Base record for two phase heat transfer coefficient

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.EvenGap

Information

Parameters

Type	Name	Default	Description
Even gap
kc_evenGap	target	Dissipation.Utilities.Types....	Target variable of calculation
Length	h	0.1	Height of cross sectional area [m]
Length	s	0.05	Distance between parallel plates in cross sectional area [m]
Length	L	1	Overflowed length of gap [m]

Modelica definition

record EvenGap "Input for even gap"
  extends Modelica.Icons.Record;

  //choices
  Modelica.Fluid.Dissipation.Utilities.Types.kc_evenGap target=Dissipation.Utilities.Types.kc_evenGap.DevBoth 
    "Target variable of calculation";

  SI.Length h=0.1 "Height of cross sectional area";
  SI.Length s=0.05 "Distance between parallel plates in cross sectional area";
  SI.Length L=1 "Overflowed length of gap";
end EvenGap;

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.General

Information

Parameters

Type	Name	Default	Description
Generic variables
kc_general	target	Dissipation.Utilities.Types....	Target correlation
Area	A_cross	Modelica.Constants.pi*0.1^2/4	Cross sectional area [m2]
Length	perimeter	Modelica.Constants.pi*0.1	Wetted perimeter [m]

Modelica definition

record General "Input for generic correlation"
  extends Modelica.Icons.Record;

  //choices
  Modelica.Fluid.Dissipation.Utilities.Types.kc_general target=Dissipation.Utilities.Types.kc_general.Finest 
    "Target correlation";

  //geometry
  SI.Area A_cross=Modelica.Constants.pi*0.1^2/4 "Cross sectional area";
  SI.Length perimeter=Modelica.Constants.pi*0.1 "Wetted perimeter";
end General;

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.HelicalPipe

Information

Parameters

Type	Name	Default	Description
HelicalPipe
Real	n_nt	1	Total number of turns
Diameter	d_hyd	0.1	Hydraulic diameter [m]
Length	h	0.01	Distance between turns [m]
Length	L	1	Total length of helical pipe [m]

Modelica definition

record HelicalPipe "Input for helical pipe"
  extends Modelica.Icons.Record;

  Real n_nt=1 "Total number of turns";
  SI.Diameter d_hyd=0.1 "Hydraulic diameter";
  SI.Length h=0.01 "Distance between turns";
  SI.Length L=1 "Total length of helical pipe";

end HelicalPipe;

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.Plate

Information

Parameters

Type	Name	Default	Description
Plate
Length	L	1	Length of plate [m]

Modelica definition

record Plate "Input for plate"
  extends Modelica.Icons.Record;

  SI.Length L=1 "Length of plate";

end Plate;

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.StraightPipe

Information

Parameters

Type	Name	Default	Description
Straight pipe
Diameter	d_hyd	0.1	Hydraulic diameter [m]
Length	L	1	Length [m]

Modelica definition

record StraightPipe "Input for straight pipe"
  extends Modelica.Icons.Record;

  SI.Diameter d_hyd=0.1 "Hydraulic diameter";
  SI.Length L=1 "Length";
end StraightPipe;

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.TwoPhaseFlowHT_IN_con

Information

Parameters

Type	Name	Default	Description
Choices
TwoPhaseHeatTransferTarget	target	Modelica.Fluid.Dissipation.U...	Choice of (horizontal/vertical) boiling or (horizontal) condensation in pipe
Geometry
Area	A_cross	Modelica.Constants.pi*0.1^2/4	Cross sectional area [m2]
Length	perimeter	Modelica.Constants.pi*0.1	Wettet perimeter [m]
Fluid properties
MolarMass	MM	0.018015268	Molar mass of fluid [kg/mol]
Pressure	p_crit		Critical pressure of fluid [Pa]

Modelica definition

record TwoPhaseFlowHT_IN_con 
  "Base record for two phase heat transfer coefficient"
  extends Modelica.Icons.Record;

  //choices
  Modelica.Fluid.Dissipation.Utilities.Types.TwoPhaseHeatTransferTarget
    target=
      Modelica.Fluid.Dissipation.Utilities.Types.TwoPhaseHeatTransferTarget.BoilHor 
    "Choice of (horizontal/vertical) boiling or (horizontal) condensation in pipe";

  SI.Area A_cross=Modelica.Constants.pi*0.1^2/4 "Cross sectional area";
  SI.Length perimeter=Modelica.Constants.pi*0.1 "Wettet perimeter";

  SI.MolarMass MM=0.018015268 "Molar mass of fluid";
  SI.Pressure p_crit "Critical pressure of fluid";

end TwoPhaseFlowHT_IN_con;

Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.TwoPhaseFlowHT_IN_var

Information

Parameters

Type	Name	Default	Description
Choices
TwoPhaseHeatTransferTarget	target	Modelica.Fluid.Dissipation.U...	Choice of (horizontal/vertical) boiling or (horizontal) condensation in pipe
Fluid properties
SpecificHeatCapacityAtConstantPressure	cp_l		Specific heat capacity of liquid [J/(kg.K)]
ThermalConductivity	lambda_l		Thermal conductivity of liquid [W/(m.K)]
Density	rho_g		Density of gas [kg/m3]
Density	rho_l		Density of liquid [kg/m3]
DynamicViscosity	eta_g		Dynamic viscosity of gas [Pa.s]
DynamicViscosity	eta_l		Dynamic viscosity of liquid [Pa.s]
Pressure	pressure		Mean pressure of fluid [Pa]
SpecificEnthalpy	dh_lg		Evaporation enthalpy of fluid [J/kg]
Input
MassFlowRate	m_flow		Mass flow rate [kg/s]
HeatFlux	qdot_A	0	Heat flux at boiling [W/m2]
Real	x_flow	0	Mass flow rate quality

Modelica definition

record TwoPhaseFlowHT_IN_var 
  "Base record for two phase heat transfer coefficient"
  extends Modelica.Icons.Record;

  //choices
  Modelica.Fluid.Dissipation.Utilities.Types.TwoPhaseHeatTransferTarget
    target=
      Modelica.Fluid.Dissipation.Utilities.Types.TwoPhaseHeatTransferTarget.BoilHor 
    "Choice of (horizontal/vertical) boiling or (horizontal) condensation in pipe";

  //fluid properties
  SI.SpecificHeatCapacityAtConstantPressure cp_l 
    "Specific heat capacity of liquid";
  SI.ThermalConductivity lambda_l "Thermal conductivity of liquid";
  SI.Density rho_g "Density of gas";
  SI.Density rho_l "Density of liquid";
  SI.DynamicViscosity eta_g "Dynamic viscosity of gas";
  SI.DynamicViscosity eta_l "Dynamic viscosity of liquid";

  SI.Pressure pressure "Mean pressure of fluid";
  SI.SpecificEnthalpy dh_lg "Evaporation enthalpy of fluid";

  //input variables
  SI.MassFlowRate m_flow "Mass flow rate";
  SI.HeatFlux qdot_A=0 "Heat flux at boiling";

  Real x_flow=0 "Mass flow rate quality";
end TwoPhaseFlowHT_IN_var;