recordGeneric
Data record for passive rear door heat exchanger
Extends from Modelica.Icons.Record (Icon for records).
Information
Generic data record for a rear door heat exchanger used in hybrid IT racks.
The rear door heat exchanger is placed at the air outlet of the rack.
It removes heat from the warm exhaust air using a liquid coolant.
The heat exchanger effectiveness eps_nominal is computed from
the design heat duty, the inlet temperatures, and the minimum capacity flow rate.
The parameter cpCoo_nominal is the specific heat capacity
of the coolant at nominal conditions, which defaults to the value for water.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.SpecificHeatCapacity | cpCoo_nominal | Buildings.Media.Water.cp_const | Specific heat capacity of rear door heat exchanger coolant fluid |
| Modelica.Units.SI.SpecificHeatCapacity | cpAir_nominal | Buildings.Utilities.Psychrometrics.Constants.cpAir | Specific heat capacity of air |
| Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | mAir_flow_nominal | Design air mass flow rate for heat exchanger | |
| Modelica.Units.SI.MassFlowRate | mCoo_flow_nominal | Design coolant flow rate for heat exchanger parameterization | |
| Modelica.Units.SI.HeatFlowRate | Q_flow_nominal | Cooling capacity at design condition (negative number) | |
| Modelica.Units.SI.Temperature | TAirIn_nominal | Air inlet nominal temperature (air entering rear door heat exchanger) | |
| Modelica.Units.SI.Temperature | TCooIn_nominal | Rear door coolant inlet nominal temperature | |
| Modelica.Units.SI.PressureDifference | dpCoo_nominal | 10000 | Coolant-side pressure drop at nominal flow rate |
| Modelica.Units.SI.PressureDifference | dpAir_nominal | 200 | Air-side pressure drop at nominal flow rate |
Revisions
-
September 12, 2026, by Michael Wetter:
First implementation.