modelWetCoilCounterFlowLowWaterFlowRate
Model that tests a heat exchanger with prescribed boundary conditions, in terms of properties of inlet water and inlet air
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This is a validation case in which the air flow rate is about a third of the design flow rate, and the water mass flow rate is ramped to zero. The validation verifies that the outlet temperatures approach the inlet temperature of the air.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.MassFlowRate | mWat_flow_nominal | 0.44732114 | Nominal mass flow rate |
| Modelica.Units.SI.MassFlowRate | mAir_flow_nominal | 0.65844 | Nominal mass flow rate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.HeatExchangers.WetCoilCounterFlow | hex | Cooling coil | |
| Buildings.Fluid.Sources.MassFlowSource_T | sou_w | Source for water | |
| Buildings.Fluid.Sources.Boundary_pT | sin_w | sink for water | |
| Buildings.Fluid.Sources.MassFlowSource_T | sou_a | Source for air | |
| Buildings.Fluid.Sources.Boundary_pT | sin_a | sink for air | |
| Controls.OBC.CDL.Reals.Sources.Ramp | ram | ||
| Sensors.TemperatureTwoPort | senTemWatIn | Temperature sensor | |
| Sensors.TemperatureTwoPort | senTemWatOut | Temperature sensor | |
| Sensors.TemperatureTwoPort | senTemAirIn | Temperature sensor | |
| Sensors.TemperatureTwoPort | senTemAirOut | Temperature sensor |
Contents
| Name | Description |
|---|---|
 Medium1 | Medium model for water |
 Medium2 | Medium model for air |
Revisions
-
July 5, 2022, by Antoine Gautier:
Modify air source boundary condition so air enters coil at 99.5% relative humidity.
This is for issue 3065. -
May 26, 2022, by Michael Wetter:
First implementation.
This is for issue 3027.