modelPartialDistribution1Pipe
Partial model for one-pipe distribution network
Extends from PartialDistribution (Partial model for distribution network).
Information
Partial model of a one-pipe distribution network.
An array of replaceable partial models is used to represent the connections along the network, including the pipe segment immediately upstream of each connection.
A replaceable partial model is used to represent the pipe segment of the return line after the last connection.
Optionally the heat flow rate transferred to each connected load can be output.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | show_entFlo | false | Set to true to output enthalpy flow rate difference at each connection |
| Boolean | show_TOut | false | Set to true to output temperature at connection outlet |
| General | |||
| Integer | nCon (from PartialDistribution2Medium) | Number of connections | |
| Assumptions | |||
| Boolean | allowFlowReversal (from PartialDistribution2Medium) | false | = true to allow flow reversal, false restricts to design direction (port_a -> port_b) |
| General › Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | mDis_flow_nominal | Nominal mass flow rate in the distribution line | |
| Modelica.Units.SI.MassFlowRate[nCon] | mCon_flow_nominal | Nominal mass flow rate in each connection line | |
| Dynamics › Conservation equations | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics | Modelica.Fluid.Types.Dynamics.FixedInitial | Type of energy balance: dynamic (3 initialization options) or steady state |
| Dynamics › Nominal condition | |||
| Modelica.Units.SI.Time | tau | 10 | Time constant at nominal flow for dynamic energy and momentum balance |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Interfaces.FluidPorts_a[nCon] | ports_aCon (from PartialDistribution2Medium) | Connection return ports | |
| Modelica.Fluid.Interfaces.FluidPorts_b[nCon] | ports_bCon (from PartialDistribution2Medium) | Connection supply ports | |
| Modelica.Fluid.Interfaces.FluidPort_a | port_aDisSup (from PartialDistribution2Medium) | Distribution supply inlet port | |
| Modelica.Fluid.Interfaces.FluidPort_b | port_bDisSup (from PartialDistribution2Medium) | Distribution supply outlet port | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput[nCon] | dH_flow | Difference in enthalpy flow rate between connection supply and return | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput[nCon] | mCon_flow | Connection supply mass flow rate (measured) | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput[nCon] | mByp_flow | Bypass mass flow rate | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput[nCon] | TOut | Temperature in distribution line at each connection outlet |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| PartialConnection1Pipe[nCon] | con | Connection to agent | |
| Model_pipDis | pipEnd | Pipe representing the end of the distribution line (after last connection) |
Contents
| Name | Description |
|---|---|
 Model_pipDis | Model for distribution pipe |
Revisions
-
February 21, 2020, by Antoine Gautier:
First implementation.