modelEvaporatorCondenserWithCapacity
Extends from AixLib.Obsolete.YearIndependent.FastHVAC.Interfaces.TwoPortHeatMassExchanger (Model transporting one enthalpy stream with storing mass or energy).
Information
Overview
Evaporator/Condenser model adapted to FastHAVC library.
This model is based on the Fluid model
AixLib.Fluid.HeatPumps.BaseClasses.EvaporatorCondenserWithCapacity.
It includes heat losses to the environment.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Media.Interfaces.Types.Temperature | T_start (from TwoPortHeatMassExchanger) | workingFluid.T0 | |
| Modelica.Units.SI.Mass | m_fluid (from TwoPortHeatMassExchanger) | Mass of working fluid | |
| Media.BaseClasses.MediumSimple | medium (from TwoPortHeatMassExchanger) | AixLib.Obsolete.YearIndependent.FastHVAC.Media.WaterSimple() | Mediums charastics (heat capacity, density, thermal conductivity) |
| Modelica.Units.SI.MassFlowRate | m_flow_start (from TwoPortHeatMassExchanger) | 0 | Start value for m_flow, used to avoid a warning if not set in m_flow, and to avoid m_flow.start in parameter window |
| Boolean | is_con | Type of heat exchanger | |
| Modelica.Units.SI.Volume | V | Volume in condenser | |
| Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nominal (from TwoPortHeatMassExchanger) | Nominal mass flow rate | |
| Advanced | |||
| Modelica.Units.SI.MassFlowRate | m_flow_small (from TwoPortHeatMassExchanger) | 1E-4*abs(m_flow_nominal) | Small mass flow rate for regularization of zero flow |
| Heat losses | |||
| Boolean | use_cap | true | False if capacity and heat losses are neglected |
| Modelica.Units.SI.HeatCapacity | C | Capacity of heat exchanger | |
| Modelica.Units.SI.ThermalConductance | kAOut_nominal | Nominal value for thermal conductance to the ambient | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Interfaces.EnthalpyPort_a | enthalpyPort_a (from TwoPortHeatMassExchanger) | FastHVAC connector a (positive design flow direction is from port_a to port_b) | |
| Interfaces.EnthalpyPort_b | enthalpyPort_b (from TwoPortHeatMassExchanger) | FastHVAC connector b (positive design flow direction is from port_a to port_b) | |
| Modelica.Blocks.Interfaces.RealOutput | kAInn | Formular for calculation of heat transfer coefficient on the inside | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_out | Temperature and heat flow to the ambient | |
| Modelica.Blocks.Interfaces.RealInput | QFlow_in | Heat flow rate to the medium |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.MassFlowRate | m_flow (from TwoPortHeatMassExchanger) | enthalpyPort_a.m_flow | Mass flow rate from port_a to port_b (m_flow > 0 is design flow direction) |
| BaseClasses.WorkingFluid | workingFluid (from TwoPortHeatMassExchanger) | ||
| Modelica.Thermal.HeatTransfer.Components.Convection | conIns | Convection between fluid and solid | |
| Modelica.Thermal.HeatTransfer.Components.Convection | conOut | Convection and conduction between solid and ambient air | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | heatCap | Heat Capacity | |
| Modelica.Blocks.Sources.RealExpression | heatLossIns | Nominal heat loss coefficient to the inside | |
| Modelica.Blocks.Sources.RealExpression | heatLossOut | Nominal heat loss coefficient to the inside | |
| Modelica.Thermal.HeatTransfer.Sources.PrescribedHeatFlow | preHea | Heat flow rate of the condenser |
Revisions
-
January 22, 2019 Niklas Hülsenbeck:
Moved into AixLib