modelSingleBoiler
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This example model demonstrates a complete system simulation for steam district heating systems. The central plant features a single boiler. For the distribution network, pressure losses on the condensate return pipes are included, while the steam pipes are assumed to be lossless.
References
Kathryn Hinkelman, Saranya Anbarasu, Michael Wetter, Antoine Gautier, Wangda Zuo. 2022. “A Fast and Accurate Modeling Approach for Water and Steam Thermodynamics with Practical Applications in District Heating System Simulation,” Energy, 254(A), pp. 124227. 10.1016/j.energy.2022.124227
Kathryn Hinkelman, Saranya Anbarasu, Michael Wetter, Antoine Gautier, Baptiste Ravache, Wangda Zuo 2022. “Towards Open-Source Modelica Models For Steam-Based District Heating Systems.” Proc. of the 1st International Workshop On Open Source Modelling And Simulation Of Energy Systems (OSMSES 2022), Aachen, German, April 4-5, 2022. 10.1109/OSMSES54027.2022.9769121
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.AbsolutePressure | pSat | 400000 | Saturation pressure, high pressure |
| Modelica.Units.SI.AbsolutePressure | pLow | 200000 | Reduced pressure, after PRV |
| Modelica.Units.SI.Temperature | TSat | MediumSte.saturationTemperature(pSat) | Saturation temperature, at high pressure |
| Integer | N | 3 | Number of buildings |
| Modelica.Units.SI.MassFlowRate | mDis_flow_nominal | sum(bld.m_flow_nominal)*1.2 | Nominal mass flow rate of entire district |
| Modelica.Units.SI.HeatFlowRate | QDis_flow_nominal | QBui_flow_nominal*N | Nominal heat flow rate of entire district |
| Modelica.Units.SI.HeatFlowRate | QBui_flow_nominal | 20000 | Nominal heat flow rate of each building |
| Modelica.Units.SI.PressureDifference | dpPip | 6000 | Pressure drop in the condensate return pipe |
| Buildings.Fluid.Movers.Data.Generic | perPumFW | Performance data for feedwater pump at the plant | |
| Modelica.Units.SI.PressureDifference | dp_nominal | 6000 | Pressure drop of distribution at nominal mass flow rate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.DHC.Loads.Steam.BuildingTimeSeriesAtETS[N] | bld | Buildings | |
| Buildings.DHC.Networks.Steam.DistributionCondensatePipe | dis | Distribution network | |
| Buildings.DHC.Plants.Steam.SingleBoiler | pla | Plant |
Contents
| Name | Description |
|---|---|
 MediumSte | Steam medium |
 MediumWat | Water medium |
Revisions
-
September 15, 2023, by Kathryn Hinkelman:
Added publication references. -
March 3, 2022 by Kathryn Hinkelman:
First implementation.