## 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*. Both vectors,

_{V}^{i}< r_{V}^{i+1}*r*and

_{V}*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

## 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_{ΔT}^{i}=
ΔT^{i} ⁄ ΔT_{nominal}
=
(T_{w}^{i}-T_{z})
⁄
(T_{w,nominal}-T_{z}),

where
*T _{w}^{i}* is the water inlet temperature,

*T*is the zone air temperature and

_{z}*T*is the nominal water inlet temperature.

_{w,nominal}
The normalized temperature difference *r _{ΔT}* must be strictly increasing, i.e.,

*r*. Both vectors,

_{ΔT}^{i}< r_{ΔT}^{i+1}*r*and

_{ΔT}*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

## 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*. Both vectors,

_{V}^{i}< r_{V}^{i+1}*r*and

_{V}*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] |