modelDistributionCondensatePipe
Example model for the steam heating distribution network
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This model demonstrates the performance of the distribution network block for steam heating systems with two connected buildings with unique heating load profiles.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.AbsolutePressure | pSat | 150000 | Saturation pressure |
| Modelica.Units.SI.Temperature | TSat | MediumSte.saturationTemperature(pSat) | Saturation temperature |
| Modelica.Units.SI.SpecificEnthalpy | dh_nominal | MediumSte.specificEnthalpy(MediumSte.setState_pTX(p = pSat, T = TSat, X = MediumSte.X_default)) - MediumWat.specificEnthalpy(MediumWat.setState_pTX(p = pSat, T = TSat, X = MediumWat.X_default)) | Nominal change in enthalpy due to vaporization |
| Modelica.Units.SI.Power | Q1_flow_nominal | 200E3 | Nominal heat flow rate, building 1 |
| Modelica.Units.SI.Power | Q2_flow_nominal | 300E3 | Nominal heat flow rate, building 2 |
| Real[:,:] | QHeaLoa1 | [0, 200E3; 6, 200E3; 6, 50E3; 18, 50E3; 18, 75E3; 24, 75E3] | Heating load profile for the building 1 |
| Real[:,:] | QHeaLoa2 | [0, 100E3; 6, 200E3; 6, 200E3; 10, 300E3; 18, 300E3; 24, 100E3] | Heating load profile for the building 2 |
| Modelica.Units.SI.PressureDifference | dp_nominal | 6000 | Pressure drop at nominal mass flow rate |
| Modelica.Units.SI.MassFlowRate | m1_flow_nominal | Q1_flow_nominal/dh_nominal | Nominal mass flow rate, building 1 |
| Modelica.Units.SI.MassFlowRate | m2_flow_nominal | Q2_flow_nominal/dh_nominal | Nominal mass flow rate, building 2 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.Sources.Boundary_pT | souSte | Steam source | |
| Buildings.Fluid.Sources.Boundary_pT | sinWat | Water condensate sink | |
| Buildings.DHC.Networks.Steam.DistributionCondensatePipe | dis | ||
| Buildings.DHC.Loads.Steam.BuildingTimeSeriesAtETS[2] | bui | Building vector consisting of 2 buildings |
Contents
| Name | Description |
|---|---|
 MediumSte | Steam medium |
 MediumWat | Water medium |
Revisions
-
March 2, 2022, by Kathryn Hinkelman:
First implementation.