sepehr
5bd180b5b8
Some checks failed
CI / check (push) Has been cancelled
Capture uncommitted solver robustness work (regularization, domain errors, linear solver lifecycle, tube DP/MSH), web workbench updates, and synced BMAD skills across IDE agent folders before starting BPHX pressure-drop. Co-authored-by: Cursor <cursoragent@cursor.com>
61 lines
1.3 KiB
Markdown
61 lines
1.3 KiB
Markdown
# HeatExchanger (generic)
|
||
|
||
Config type: `"HeatExchanger"`
|
||
Source: `crates/components/src/heat_exchanger/exchanger.rs` + ε-NTU / LMTD models
|
||
|
||
---
|
||
|
||
## EN
|
||
|
||
### Purpose & model
|
||
|
||
Generic two-stream HX with selectable model:
|
||
|
||
- **ε-NTU** effectiveness
|
||
- **LMTD** / counterflow forms
|
||
|
||
Ports: hot_in/out, cold_in/out (Modelica-style 4-port).
|
||
|
||
```
|
||
NTU = UA / C_min
|
||
ε = f(NTU, C_r, flow arrangement)
|
||
Q = ε · C_min · (T_hot,in − T_cold,in)
|
||
```
|
||
|
||
**Requires live four-port edge state** for residual evaluation on the generic path — inlet-only scalar BCs do not invent outlet states.
|
||
|
||
### Residuals & `n_equations()`
|
||
|
||
Inner model residual count (often 2–3 per side balance depending on configuration).
|
||
|
||
### Ports
|
||
|
||
| Port | Role |
|
||
|------|------|
|
||
| `hot_inlet` / `hot_outlet` | hot stream |
|
||
| `cold_inlet` / `cold_outlet` | cold stream |
|
||
|
||
### Calibration
|
||
|
||
`z_ua` on UA (default 1.0).
|
||
|
||
### When not to use
|
||
|
||
For refrigeration condensers/evaporators prefer specialized `Condenser` / `Evaporator` / `FloodedEvaporator` / BPHX which know phase-change ε-NTU and secondary dual modes.
|
||
|
||
---
|
||
|
||
## FR
|
||
|
||
### But
|
||
|
||
Échangeur **générique** 4 ports (ε-NTU / LMTD).
|
||
|
||
### Attention
|
||
|
||
Exige un état **4 ports live**. Pour frigo, préférer Condenser / Evaporator / Flooded / BPHX.
|
||
|
||
### Calibration
|
||
|
||
Z_UA = 1 par défaut.
|