functioncrossCurrent
Extends from baseFunc.
Information
This functions computes the exchanger effectiveness for cross current flows where:
- Both flows are unmixed
- One flow is mixed an the other unmixed
Both fluid are unmixed
The relation to compute the effectiveness derives:
Qc_max is mixed
The relation to compute the effectiveness derives:
Qc_max is unmixed
The relation to compute the effectiveness derives:
For all relations, when Cr ≤ Cr_small, the effectiveness derives. When Cr_small ≤ Cr ≤ 2*Cr_small, the effectiveness is fit by a polynom via the regStep function between its normal relation and the relation for Cr ≤ Cr_small
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real | NTU (from baseFunc) | Number of transfer unit | |
| Real | Cr (from baseFunc) | Ratio of thermal condutance | |
| CrossFlow_arrangement | arrangement | ||
| Real | Qc_A | ||
| Real | Qc_B |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.SIunits.Efficiency | Eff (from baseFunc) | Exchanger effectiveness |