# Anchor & HeatSource (inline BOLT-style nodes)

Config types: `"Anchor"` / `"RefrigerantNode"`, `"HeatSource"`  
Source: anchor / heat source modules in components

---

## EN

### Anchor (Refrigerant.Node)

Inline **probe or spec** on a refrigerant edge:

| Mode | Behaviour | DoF |
|------|-----------|-----|
| Probe (no key) | measures P/T/SH/SC — **DoF-neutral** | 0 equations |
| Spec | imposes **one** of `superheat_k`, `quality`, `t_c`/`t_k`, `p_bar` | **+1 equation** |

When imposing, free something elsewhere (emergent pressure, free actuator, free boundary).

### HeatSource (Heat.Source)

Injects `q_w` (or `q_kw`) into the stream energy balance:

```
ṁ · (h_out − h_in) = Q_heat
```

Negative Q extracts heat. Can be linked as `cold_component` of a thermal coupling (motor cooling pattern).

### Ports

Inline on a single branch (inlet/outlet pass-through).

### Calibration

None required for probe mode.

### JSON (main)

| Key | Component | Meaning |
|-----|-----------|---------|
| `superheat_k` / `quality` / `t_c` / `p_bar` | Anchor | one optional FIX |
| `q_w` / `q_kw` | HeatSource | heat injection |

---

## FR

### Anchor

Sonde (0 DoF) ou **une** spécification (+1 équation) : SH, x, T ou P.

### HeatSource

Injection de chaleur `Q` dans le bilan d’énergie du fluide.

### DoF

Imposer une spec Anchor ⇒ libérer ailleurs.