Buildings.Fluid.HeatExchangers.ActiveBeams.Data.BaseClasses

Base classes for performance data

Information

This package contains performance curves for the active beam models.

Package Content

Name	Description
AirFlow	Record for primary air parameters
TemperatureDifference	Record for temperature difference
WaterFlow	Record for water parameters

Buildings.Fluid.HeatExchangers.ActiveBeams.Data.BaseClasses.AirFlow

Record for primary air parameters

Information

Data record for performance data that describe the air volume flow rate versus the change in the rate of heating or cooling.

The normamlized volume flow rate r_V must be strictly increasing, i.e., r_Vⁱ < r_Vⁱ⁺¹. Both vectors, r_V and f must have the same size.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

Type	Name	Default	Description
Real	r_V[:]		Normalized air volume flow rate at user-selected operating points [1]
Real	f[size(r_V, 1)]		Normalized performance factor at these flow rates [1]

Modelica definition

record AirFlow "Record for primary air parameters" extends Modelica.Icons.Record; parameter Real r_V[:](each min=0, each final unit="1") "Normalized air volume flow rate at user-selected operating points"; parameter Real f[size(r_V, 1)](each min=0, each final unit="1") "Normalized performance factor at these flow rates"; end AirFlow;

Buildings.Fluid.HeatExchangers.ActiveBeams.Data.BaseClasses.TemperatureDifference

Record for temperature difference

Information

Data record for performance data that describe the normalized temperature difference versus the change in the rate of heating or cooling. The normalized temperature difference is defined as

r_ΔTⁱ= ΔTⁱ ⁄ ΔT_nominal = (T_wⁱ-T_z) ⁄ (T_w,nominal-T_z),

where T_wⁱ is the water inlet temperature, T_z is the zone air temperature and T_w,nominal is the nominal water inlet temperature.

The normalized temperature difference r_ΔT must be strictly increasing, i.e., r_ΔTⁱ < r_ΔTⁱ⁺¹. Both vectors, r_ΔT and f must have the same size.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

Type	Name	Default	Description
Real	r_dT[:]		Normalized temperature difference, e.g., temperature difference at user-selected operating points divided by nominal temperature difference. Must be positive. [1]
Real	f[size(r_dT, 1)]		Normalized performance factor at these normalized temperature differences [1]

Modelica definition

record TemperatureDifference "Record for temperature difference" extends Modelica.Icons.Record; parameter Real r_dT[:](each min=0, each final unit="1") "Normalized temperature difference, e.g., temperature difference at user-selected operating points divided by nominal temperature difference. Must be positive."; parameter Real f[size(r_dT, 1)](each min=0, each final unit="1") "Normalized performance factor at these normalized temperature differences"; end TemperatureDifference;

Buildings.Fluid.HeatExchangers.ActiveBeams.Data.BaseClasses.WaterFlow

Record for water parameters

Information

Data record for performance data that describe the water volume flow rate versus the change in the rate of heating or cooling.

The normamlized volume flow rate r_V must be strictly increasing, i.e., r_Vⁱ < r_Vⁱ⁺¹. Both vectors, r_V and f must have the same size.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

Type	Name	Default	Description
Real	r_V[:]		Normalized water volume flow rate at user-selected operating points [1]
Real	f[size(r_V, 1)]		Normalized performance factor at these flow rates [1]

Modelica definition

record WaterFlow "Record for water parameters" extends Modelica.Icons.Record; parameter Real r_V[:](each min=0, each final unit="1") "Normalized water volume flow rate at user-selected operating points"; parameter Real f[size(r_V, 1)](each min=0, each unit="1") "Normalized performance factor at these flow rates"; end WaterFlow;