modelHT_Single_Buried_L2
Extends from HT_PlugFlow_Base_L2 (Base class for PlugFlow Heat Transfer Models).
Information
1. Purpose of model
Calculates heat loss of a single buried district heating pipe
2. Level of detail, physical effects considered, and physical insight
Based upon Dynamic equation-based thermo-hydraulic pipe model for district heating and cooling systems by B. van der Heide et al.
3. Limits of validity
(no remarks)
4. Interfaces
(no remarks)
5. Nomenclature
(no remarks)
6. Governing Equations
(no remarks)
7. Remarks for Usage
(no remarks)
8. Validation
(no remarks)
9. References
B. van der Heijde, M. Fuchs, C. Ribas Tugores "Dynamic equation-based thermo-hydraulic pipe model for district heating and cooling systems", 2017
10. Version History
Model created by Philipp Huismann (huismann@gwi-essen.de) on 10.10.2018
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Length | diameter_i (from HT_PlugFlow_Base_L2) | pipe_parameter.diameter_i | Inner Diameter of the Pipe |
| SI.Length | diameter_o (from HT_PlugFlow_Base_L2) | pipe_parameter.diameter_o | Outer Diameter of the Pipe |
| SI.Length | pipe_wall_thickness (from HT_PlugFlow_Base_L2) | pipe_parameter.pipe_wall_thickness | Pipe Wall Thickness |
| SI.Length | length (from HT_PlugFlow_Base_L2) | pipe_parameter.length | Length of the pipe |
| SI.ThermalConductivity | lambda_insulation (from HT_PlugFlow_Base_L2) | pipe_parameter.lambda_insulation | Thermal Conductivity of the Insulation |
| SI.Length | depth | pipe_parameter.depth | Depth of the pipe |
| SI.ThermalConductivity | lambda_ground | simCenter.lambda_ground | Thermal conductivity of the soil |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Interfaces.Thermal.FluidPortIn | waterPortIn (from HT_PlugFlow_Base_L2) | Inlet port | |
| TransiEnt.Basics.Interfaces.Thermal.FluidPortOut | waterPortOut (from HT_PlugFlow_Base_L2) | Outlet port | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heat (from HT_PlugFlow_Base_L2) | ||
| Modelica.Blocks.Interfaces.RealInput | residence_time (from HT_PlugFlow_Base_L2) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.SimCenter | simCenter (from HT_PlugFlow_Base_L2) | ||
| TransiEnt.Components.Heat.VolumesValvesFittings.Pipes.Base.pipe_parameters | pipe_parameter (from HT_PlugFlow_Base_L2) | ||
| Real | R (from HT_PlugFlow_Base_L2) | Thermal Resistance of the Pipe per meter | |
| Real | C (from HT_PlugFlow_Base_L2) | Heat Capacity per meter | |
| SI.MassFlowRate | m_flow | waterPortIn.m_flow | |
| SI.SpecificEnthalpy | h_in | waterPortIn.h_outflow | |
| SI.SpecificEnthalpy | h_out | fluidOut.h | |
| SI.Temperature | T_in | ||
| SI.Temperature | T_out | ||
| TILMedia.VLEFluid_pT | fluidIn | ||
| TILMedia.VLEFluid_pT | fluidOut |