modelHeatCharacteristic
Calculates house return temperature based on outdoor temperature
Information
Purpose of model
A model of heat characteristics of the dwelling system for a building. The supply and the return temperature is calculated in dependence of the ambient temperature. The heat flow rate is passed from one heat port to the other.
Level of detail, physical effects considered, and physical insight
No physical effects are considered. It is a purely technical component for setting the correct temperatures at the heat ports.
References
The model was used in the following publication:
[1]Vieth, J.; Westphal, J.; Speerforck, A.; District heating network topology optimization and optimal co-planning using dynamic simulations; Advances in Applied Energy; 2025
Version History
Model was inserted by Jan Westphal (j.westphal@tuhh.de) August 2025
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | aS1 | -0.8 | first coefficient of supply temperature for outdoor temperatures lower 5°C |
| Real | bS1 | 50 | second coefficient of supply temperature for outdoor temperatures lower 5°C |
| Real | aS2 | -0.1 | first coefficient of supply temperature for outdoor temperatures lower 15°C |
| Real | bS2 | 46.5 | second coefficient of supply temperature for outdoor temperatures lower 15°C |
| Real | aR1 | -0.6 | first coefficient of supply temperature for outdoor temperatures lower 5°C |
| Real | bR1 | 35 | second coefficient of supply temperature for outdoor temperatures lower 5°C |
| Real | aR2 | -0.2 | first coefficient of supply temperature for outdoor temperatures lower 15°C |
| Real | bR2 | 33 | second coefficient of supply temperature for outdoor temperatures lower 15°C |
| SI.Temperature | TS_15 | 45 + 273.15 | supply temperature at 15 °C outdoor temperature |
| SI.Temperature | TR_15 | 30 + 273.15 | return temperature at 15 °C outdoor temperature |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatPortHouse | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatPortDHN_R | ||
| Modelica.Blocks.Interfaces.RealInput | Toutdoor |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.HeatFlowRate | Q_flow | ||
| SI.Temperature | T_house |