modelPartialCHP
Model consisting of replaceable engine and generator and control interface
Extends from TransiEnt.Basics.Icons.CHP.
Information
1. Purpose of model
Partial model of a configureable CHP with internal combustion engine.
2. Level of detail, physical effects considered, and physical insight
(no remarks)
3. Limits of validity
(no remarks)
4. Interfaces
P_el_set - Electric Power setpoint
T_return - Heating Water Return temperature
T_supply - Heating Water Supply temperature
switch
P_el_pump_set - Electric Pump Power setpoint
epp - Electric Power Port, type can be chosen
gasPortIn - Fuel Gas Input Port
gasPortOut - Fuel Gas Output Port
waterPortOut - Heating Water Output
waterPortIn - Heating Water Input
5. Nomenclature
(no remarks)
6. Governing Equations
(no remarks)
7. Remarks for Usage
(no remarks)
8. Validation
(no validation or testing necessary)
9. References
(no remarks)
10. Version History
Created by Arne Koeppen (arne.koeppen@tuhh.de), Jun 2013
Revised by Lisa Andresen (andresen@tuhh.de), Aug 2013
Model generalized for different electrical power ports by Jan-Peter Heckel (jan.heckel@tuhh.de) in July 2018
Edited by Anne Senkel (anne.senkel@tuhh.de), Feb 2019
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| General › Fundamental | |||
| TILMedia.VLEFluidTypes.BaseVLEFluid | WaterMedium | simCenter.fluid1 | Medium in coolant and heating grid cycles |
| TILMedia.GasTypes.BaseGas | FuelMedium | simCenter.gasModel2 | Fuel medium |
| TILMedia.GasTypes.BaseGas | ExhaustMedium | simCenter.exhaustGasModel | Exhaust medium |
| General › Specification | |||
| SI.Temperature | T_site | 290 | Average ambient temperature at plant site |
| SI.PressureDifference | Delta_p_nom | 1e5 | Nominal pressure drop in heat flow model |
| SI.MassFlowRate | m_flow_nom | motorblock.heatFlowModel.simCenter.m_flow_nom | Nominal mass flow rate in heat flow model |
| General › Combustion | |||
| SI.SpecificEnthalpy | NCV_const | 40e6 | Constant value for net calorific value (set to 0 for medium dependent NCV calculation) |
| Real | lambda | Specification.lambda | Constant combustion air ratio |
| General › Statistics | |||
| TransiEnt.Basics.Types.TypeOfResource | TypeOfResource | TransiEnt.Basics.Types.TypeOfResource.Cogeneration | Type of resource |
| TransiEnt.Basics.Types.TypeOfPrimaryEnergyCarrier | TypeOfEnergyCarrierElectricity | TransiEnt.Basics.Types.TypeOfPrimaryEnergyCarrier.NaturalGas | Type of energy carrier |
| TransiEnt.Basics.Types.TypeOfPrimaryEnergyCarrierHeat | TypeOfEnergyCarrierHeat | TransiEnt.Basics.Types.TypeOfPrimaryEnergyCarrierHeat.NaturalGas | Type of energy carrier |
| TransiEnt.Basics.Units.MonetaryUnitPerEnergy | Cspec_demAndRev_gas_fuel | simCenter.Cfue_GasBoiler | Specific demand-related cost per gas energy |
| Initialization | |||
| Modelica.Units.SI.Temperature | T_init | 293.15 | Initial temperature of medium in heat exchangers |
| Modelica.Units.SI.Pressure | p_init | 6e5 | Initial pressure of medium in heat exchangers |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Interfaces.Electrical.ActivePowerPort | epp | ||
| TransiEnt.Producer.Combined.SmallScaleCHP.Base.ControlBus | controlBus | ||
| TransiEnt.Basics.Interfaces.Gas.IdealGasEnthPortIn | gasPortIn | ||
| TransiEnt.Basics.Interfaces.Gas.IdealGasEnthPortOut | gasPortOut | ||
| TransiEnt.Basics.Interfaces.Thermal.FluidPortOut | waterPortOut | ||
| TransiEnt.Basics.Interfaces.Thermal.FluidPortIn | waterPortIn |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.SimCenter | simCenter | ||
| TransiEnt.ModelStatistics | modelStatistics | ||
| TransiEnt.Producer.Combined.SmallScaleCHP.Specifications.Dachs_HKA_G_5_5kW | Specification | ||
| TransiEnt.Components.Electrical.Machines.ActivePowerGenerator | generator | ||
| TransiEnt.Components.Electrical.Machines.ExcitationSystemsVoltageController.DummyExcitationSystem | Exciter | ||
| SI.Efficiency | eta_el | motorblock.mechanicModel.eta_el | Electric efficiency |
| SI.Efficiency | eta_th | motorblock.mechanicModel.eta_h - motorblock.mechanicModel.eta_el | Thermal efficiency |
| SI.Power | P_el_out | epp.P | Total generated electric power |
| SI.Power | P_el_set_intern | -P_el_set_intern | Set electric power |
| SI.HeatFlowRate | Q_flow_out | Total generated thermal power | |
| SI.HeatFlowRate | Q_flow_fuel | motorblock.Q_flow_fuel | Consumed fuel thermal power (NCV) |
| SI.HeatFlowRate | Q_flow_loss | motorblock.heatFlowModel.Q_flow_loss | Total loss heat flow (radiant and exhaust) |
| SI.MassFlowRate | m_flow_fuel | gasPortIn.m_flow | Fuel mass flow rate |
| SI.MassFlowRate | m_flow_CDE | gasPortOut.xi_outflow[2]*gasPortOut.m_flow | CDE mass flow rate |
| TransiEnt.Basics.Units.MassOfCDEperEnergy | m_CDE | Mass of CO2 equivalents per J fuel input [electrical, thermal] | |
| TransiEnt.Basics.Units.MassOfCDEperEnergy | m_spec_CDE | Total mass of CO2 equivalents per J fuel input | |
| SI.Temperature | T_supply_intern | supplyTemperatureSensor.T | Supply temperature |
| SI.Temperature | T_return_intern | returnTemperatureSensor.T | Supply temperature |
| TransiEnt.Components.Statistics.Collectors.LocalCollectors.CollectGwpEmissionsElectric | collectGwpEmissionsElectrical | ||
| TransiEnt.Components.Statistics.Collectors.LocalCollectors.CollectGwpEmissionsHeat | collectGwpEmissionsHeat | ||
| TransiEnt.Components.Statistics.Collectors.LocalCollectors.CollectElectricPower | collectElectricPower | ||
| TransiEnt.Components.Statistics.Collectors.LocalCollectors.CollectHeatingPower | collectHeatingPower | ||
| TransiEnt.Components.Statistics.Collectors.LocalCollectors.CollectCostsGeneral | collectCosts | ||
| Motorblock | motorblock |
Contents
| Name | Description |
|---|---|
 Motorblock | |
 AllocationMethod | |
 CostRecordCHP |