modelCHPNoControl
Table based CHP model without an internal controller
Extends from AixLib.Fluid.BoilerCHP.BaseClasses.PartialHeatGenerator.
Information
Overview
A table based combined heat and power (CHP) model. The input is the relative part load rate [0...1].
Concept
The dimension of thermal and electrical power outputs and fuel input as well as the electricity profile should be in kW. The dimension of fuel consumption depends on the user's data.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.ThermalConductance | G | 0.003*param.data_CHP[end, 3]/50 | Constant thermal conductance to environment(G=Q_loss/dT) |
| Modelica.Units.SI.HeatCapacity | C | 1.5*param.data_CHP[end, 3] | Heat capacity of metal (J/K) |
| Unit properties | |||
| AixLib.DataBase.CHP.CHPDataSimple.CHPBaseDataDefinition | param | CHP data set | |
| Real | minCapacity | 0 | Minimum allowable working capacity (unit [-]) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | u_rel | Relative | |
| Modelica.Blocks.Interfaces.RealOutput | electricalPower | Electrical power | |
| Modelica.Blocks.Interfaces.RealOutput | thermalPower | Thermal power | |
| Modelica.Blocks.Interfaces.RealOutput | fuelInput | Fuel input | |
| Modelica.Blocks.Interfaces.RealOutput | fuelConsumption | Fuel consumption | |
| Modelica.Blocks.Tables.CombiTable1Ds | combiTable1Ds | Time table to read CHP performance data | |
| Modelica.Blocks.Math.Gain | gain | Conversion factor | |
| Modelica.Blocks.Nonlinear.Limiter | limiter | Limits the rel power between 0 and 1 | |
| Modelica.Blocks.Math.Gain | gain4 | Conversion factor | |
| Modelica.Blocks.Math.Gain | gain1 | Conversion factor | |
| Modelica.Blocks.Math.Gain | gain2 | Conversion factor | |
| Modelica.Blocks.Math.Gain | gain3 | Conversion factor | |
| Modelica.Blocks.Interfaces.RealOutput | T_out | Outflow temperature of the passing fluid | |
| Modelica.Blocks.Interfaces.RealOutput | T_in | Inflow temperature of the passing fluid | |
| Modelica.Blocks.Math.Gain | toPercent | Conversion factor | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | internalCapacity | Boiler thermal capacity (dry weight) | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | ConductanceToEnv | Thermal resistance of the boiler casing | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b | T_amb | Heat port for heat losses to ambient |
Revisions
- August 31, 2020, by Alexander Kümpel:
First implementation.