Package with blocks that convert between different connectors
Information
This package contains blocks to convert between scalar input-output signals
and the composite input-output connectors
Buildings.Fluid.FMI.Interfaces.Inlet
and
Buildings.Fluid.FMI.Interfaces.Outlet.
Extends from Modelica.Icons.Package (Icon for standard packages).
Package Content
Name |
Description |
AirToOutlet
|
Conversion from real signals for a fluid to a Buildings.Fluid.FMI.Interfaces.Outlet connector |
InletToAir
|
Conversion from real signals for a fluid to a Buildings.Fluid.FMI.Interfaces.Inlet connector |
Validation
|
Collection of models that illustrate model use and test models |
Conversion from real signals for a fluid to a Buildings.Fluid.FMI.Interfaces.Outlet connector
Information
Block that takes real inputs for properties of an air-based HVAC
system and converts them to an outlet connector of type
Buildings.Fluid.FMI.Interfaces.Outlet.
See
Buildings.Fluid.FMI.Adaptors.HVAC
for its usage.
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Parameters
Type | Name | Default | Description |
replaceable package Medium | Modelica.Media.Interfaces.Pa... | Medium in the component |
Boolean | allowFlowReversal | true | = true to allow flow reversal, false restricts to design direction (inlet -> outlet) |
Connectors
Type | Name | Description |
replaceable package Medium | Medium in the component |
input RealInput | m_flow | Mass flow rate [kg/s] |
input RealInput | h | Specific enthalpy [J/kg] |
input RealInput | Xi[Medium.nXi] | Water vapor concentration in kg/kg total air [kg/kg] |
input RealInput | C[Medium.nC] | Prescribed boundary trace substances |
Outlet | outlet | Fluid outlet |
output RealOutput | TAirZon | Temperature of the backward flowing medium in the connector outlet [K] |
output RealOutput | X_wZon | Water mass fraction per total air mass of the backward flowing medium in the connector outlet [kg/kg] |
output RealOutput | CZon[Medium.nC] | Trace substances of the backward flowing medium in the connector outlet |
Modelica definition
block AirToOutlet
extends Modelica.Blocks.Icons.Block;
replaceable package Medium =
Modelica.Media.Interfaces.PartialMedium ;
parameter Boolean allowFlowReversal = true
;
Modelica.Blocks.Interfaces.RealInput m_flow(
final unit="kg/s") ;
Modelica.Blocks.Interfaces.RealInput h(
final unit="J/kg")
;
Modelica.Blocks.Interfaces.RealInput Xi[Medium.nXi](
each final unit="kg/kg")
;
Modelica.Blocks.Interfaces.RealInput C[Medium.nC](
final quantity=Medium.extraPropertiesNames)
;
Buildings.Fluid.FMI.Interfaces.Outlet outlet(
redeclare final package Medium =
Medium,
final allowFlowReversal=allowFlowReversal,
final use_p_in=false) ;
Modelica.Blocks.Interfaces.RealOutput TAirZon(
final unit="K",
displayUnit="degC")
if
allowFlowReversal
;
Modelica.Blocks.Interfaces.RealOutput X_wZon(
final unit="kg/kg")
if
Medium.nXi > 0
and allowFlowReversal
;
Modelica.Blocks.Interfaces.RealOutput CZon[Medium.nC](
final quantity=Medium.extraPropertiesNames)
if
allowFlowReversal
;
protected
Modelica.Blocks.Interfaces.RealInput Xi_internal[Medium.nXi](
each final unit = "kg/kg")
;
Modelica.Blocks.Interfaces.RealInput X_w_internal(
final unit = "kg/kg")
;
Buildings.Fluid.FMI.Interfaces.FluidProperties bacPro_internal(
redeclare final package Medium =
Medium)
;
Modelica.Blocks.Interfaces.RealOutput TAirZon_internal(
final unit="K",
displayUnit="degC")
;
Modelica.Blocks.Interfaces.RealOutput X_wZon_internal(
final unit="kg/kg")
;
Modelica.Blocks.Interfaces.RealOutput X_wZon_internal2(
final unit="kg/kg") = 0
if
Medium.nXi == 0
or not allowFlowReversal
;
Modelica.Blocks.Interfaces.RealOutput CZon_internal[Medium.nC]
;
equation
connect(Xi_internal, Xi);
if Medium.nXi == 0
then
Xi_internal =
zeros(Medium.nXi);
end if;
outlet.m_flow = m_flow;
connect(outlet.forward.X_w, X_w_internal);
if m_flow >= 0
then
outlet.forward.T =
Medium.temperature_phX(
p=Medium.p_default,
h=h,
X=
cat(1, Xi_internal, {1-
sum(Xi_internal)}));
X_w_internal =
sum(Xi_internal);
outlet.forward.C = C;
else
outlet.forward.T = Medium.T_default;
X_w_internal = Medium.X_default[1];
outlet.forward.C =
zeros(Medium.nC);
end if;
connect(TAirZon_internal, TAirZon);
bacPro_internal.T = TAirZon_internal;
connect(bacPro_internal.X_w, X_wZon_internal);
connect(CZon_internal, CZon);
bacPro_internal.C = CZon_internal;
connect(X_wZon_internal, X_wZon);
connect(X_wZon_internal, X_wZon_internal2);
if not allowFlowReversal
then
TAirZon_internal = Medium.T_default;
CZon_internal =
zeros(Medium.nC);
end if;
connect(outlet.backward, bacPro_internal);
end AirToOutlet;
Conversion from real signals for a fluid to a Buildings.Fluid.FMI.Interfaces.Inlet connector
Information
Block that takes an inlet connector of type
Buildings.Fluid.FMI.Interfaces.Inlet
and converts
it to real outputs for properties of an air-based
HVAC system.
The output signal m_flow
is equal to
inlet.m_flow
, whereas the output signals
T
, X_w
and C
are set the the properties
inlet.forward
.
Similarly, the properties of
inlet.backward
are set the the values
of the input signals
TAirZon
, X_wZon
and CZon
.
If allowFlowReversal = true
,
input signal connectors are enabled that are used
to set the fluid properties for backflow in the connector
inlet.backward
.
This can be used if this block is used to connect an HVAC
system to a thermal zone, in which case the supply air
properties are in the connector
inlet.forward
,
and the return air properties are in the connector
inlet.backward
.
See
Buildings.Fluid.FMI.Adaptors.ThermalZone
for its usage.
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Parameters
Type | Name | Default | Description |
replaceable package Medium | Modelica.Media.Interfaces.Pa... | Medium in the component |
Boolean | allowFlowReversal | true | = true to allow flow reversal, false restricts to design direction (inlet -> outlet) |
Connectors
Type | Name | Description |
replaceable package Medium | Medium in the component |
Inlet | inlet | Fluid outlet |
input RealInput | TAirZon | Zone air temperature [K] |
input RealInput | X_wZon | Zone air water mass fraction per total air mass [kg/kg] |
input RealInput | CZon[Medium.nC] | Zone air trace substances |
output RealOutput | m_flow | Mass flow rate of the inlet [kg/s] |
output RealOutput | T | Temperature of the inlet [K] |
output RealOutput | X_w | Water mass fraction per total air mass of the inlet [kg/kg] |
output RealOutput | C[Medium.nC] | Trace substances of the inlet |
Modelica definition
block InletToAir
extends Modelica.Blocks.Icons.Block;
replaceable package Medium =
Modelica.Media.Interfaces.PartialMedium ;
parameter Boolean allowFlowReversal = true
;
Buildings.Fluid.FMI.Interfaces.Inlet inlet(
redeclare final package Medium =
Medium,
final allowFlowReversal=allowFlowReversal,
final use_p_in=false) ;
Modelica.Blocks.Interfaces.RealInput TAirZon(
final unit="K",
displayUnit="degC")
if
allowFlowReversal
;
Modelica.Blocks.Interfaces.RealInput X_wZon(
final unit="kg/kg")
if
Medium.nXi > 0
and allowFlowReversal
;
Modelica.Blocks.Interfaces.RealInput CZon[Medium.nC](
final quantity=Medium.extraPropertiesNames)
if
allowFlowReversal
;
Modelica.Blocks.Interfaces.RealOutput m_flow(
final unit="kg/s") ;
Modelica.Blocks.Interfaces.RealOutput T(
final unit="K") ;
Modelica.Blocks.Interfaces.RealOutput X_w(
final unit="kg/kg")
if
Medium.nXi > 0
;
Modelica.Blocks.Interfaces.RealOutput C[Medium.nC](
final quantity=Medium.extraPropertiesNames)
;
protected
Buildings.Fluid.FMI.Interfaces.FluidProperties bacPro_internal(
redeclare final package Medium =
Medium)
;
Modelica.Blocks.Interfaces.RealInput TAirZon_internal(
final unit="K",
displayUnit="degC")
;
Modelica.Blocks.Interfaces.RealInput X_wZon_internal(
final unit="kg/kg")
;
Modelica.Blocks.Interfaces.RealInput X_wZon_internal2(
final unit="kg/kg") = 0
if
Medium.nXi == 0
or not allowFlowReversal
;
Modelica.Blocks.Interfaces.RealInput CZon_internal[Medium.nC]
;
equation
connect(TAirZon_internal, TAirZon);
bacPro_internal.T = TAirZon_internal;
connect(bacPro_internal.X_w, X_wZon_internal);
connect(CZon_internal, CZon);
bacPro_internal.C = CZon_internal;
connect(X_wZon_internal, X_wZon);
connect(X_wZon_internal, X_wZon_internal2);
if not allowFlowReversal
then
TAirZon_internal = Medium.T_default;
CZon_internal =
zeros(Medium.nC);
end if;
connect(inlet.backward, bacPro_internal);
m_flow = inlet.m_flow;
T = inlet.forward.T;
connect(inlet.forward.X_w, X_w);
C = inlet.forward.C;
end InletToAir;