modelSeriesConstantFlow
Extends from Buildings.DHC.Examples.Combined.BaseClasses.PartialSeries (Partial model for series network).
Information
This is a model of a so-called "reservoir network" (Sommer 2020), i.e., a fifth
generation district system with unidirectional mass flow rate in the
district loop, and energy transfer stations connected in series.
In this model, the temperature of the district loop is stabilized through
the operation of the plant and the borefield.
The main circulation pump has a constant mass flow rate.
Each substation takes water from the main district loop and feeds its return water back
into the main district loop downstream from the intake.
The pipes of the main loop are designed for a pressure drop of
dpDis_length_nominal=250 Pa/m at the design flow rate.
References
Sommer T., Sulzer M., Wetter M., Sotnikov A., Mennel S., Stettler C. The reservoir network: A new network topology for district heating and cooling. Energy, Volume 199, 15 May 2020, 117418.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | facMul (from PartialSeries) | 10 | Building loads multiplier factor |
| Real | dpDis_length_nominal (from PartialSeries) | 250 | Pressure drop per pipe length at nominal flow rate - Distribution line |
| Real | dpCon_length_nominal (from PartialSeries) | 250 | Pressure drop per pipe length at nominal flow rate - Connection line |
| Modelica.Units.SI.Length | dhSto (from PartialSeries) | Hydraulic diameter of the distribution pipe before each connection | |
| Modelica.Units.SI.Length | dhPla (from PartialSeries) | Hydraulic diameter of the distribution pipe before each connection | |
| Integer | nBui (from PartialSeries) | datDes.nBui | Number of buildings connected to DHC system |
| Buildings.DHC.Examples.Combined.BaseClasses.DesignDataSeries | datDes (from PartialSeries) | Design data | |
| String[nBui] | filNam | {"modelica://Buildings/Resources/Data/DHC/Loads/Examples/SwissOffice_20190916.mos", "modelica://Buildings/Resources/Data/DHC/Loads/Examples/SwissResidential_20190916.mos", "modelica://Buildings/Resources/Data/DHC/Loads/Examples/SwissHospital_20190916.mos"} | Library paths of the files with thermal loads as time series |
| Assumptions | |||
| Boolean | allowFlowReversalSer (from PartialSeries) | true | Set to true to allow flow reversal in the service lines |
| Boolean | allowFlowReversalBui (from PartialSeries) | false | Set to true to allow flow reversal for in-building systems |
Components
Revisions
-
December 12, 2023, by Ettore Zanetti:
Updated partial class, this is for issue 3431. -
February 23, 2021, by Antoine Gautier:
Refactored with base classes from theDHCpackage.
This is for issue 1769. -
January 12, 2020, by Michael Wetter:
Added documentation.