{
  "name": "Chiller MCHX Condensers - Démonstration CLI",
  "description": "Démontre l'utilisation des MchxCondenserCoil (4 coils) et FloodedEvaporator dans le pipeline CLI. Utilise des Placeholder pour simuler compresseur et vanne. Topology linéaire pour compatibilité CLI graphe.",

  "fluid": "R134a",

  "circuits": [
    {
      "id": 0,
      "components": [
        {
          "type": "Placeholder",
          "name": "comp_0",
          "n_equations": 2
        },
        {
          "type": "MchxCondenserCoil",
          "name": "mchx_0a",
          "ua": 15000.0,
          "coil_index": 0,
          "n_air": 0.5,
          "t_air_celsius": 35.0,
          "fan_speed_ratio": 1.0
        },
        {
          "type": "MchxCondenserCoil",
          "name": "mchx_0b",
          "ua": 15000.0,
          "coil_index": 1,
          "n_air": 0.5,
          "t_air_celsius": 35.0,
          "fan_speed_ratio": 0.8
        },
        {
          "type": "Placeholder",
          "name": "exv_0",
          "n_equations": 2
        },
        {
          "type": "FloodedEvaporator",
          "name": "evap_0",
          "ua": 20000.0,
          "refrigerant": "R134a",
          "secondary_fluid": "MEG",
          "target_quality": 0.7
        }
      ],
      "edges": [
        { "from": "comp_0:outlet",   "to": "mchx_0a:inlet" },
        { "from": "mchx_0a:outlet",  "to": "mchx_0b:inlet" },
        { "from": "mchx_0b:outlet",  "to": "exv_0:inlet" },
        { "from": "exv_0:outlet",    "to": "evap_0:inlet" },
        { "from": "evap_0:outlet",   "to": "comp_0:inlet" }
      ]
    },
    {
      "id": 1,
      "components": [
        {
          "type": "Placeholder",
          "name": "comp_1",
          "n_equations": 2
        },
        {
          "type": "MchxCondenserCoil",
          "name": "mchx_1a",
          "ua": 15000.0,
          "coil_index": 2,
          "n_air": 0.5,
          "t_air_celsius": 35.0,
          "fan_speed_ratio": 1.0
        },
        {
          "type": "MchxCondenserCoil",
          "name": "mchx_1b",
          "ua": 15000.0,
          "coil_index": 3,
          "n_air": 0.5,
          "t_air_celsius": 35.0,
          "fan_speed_ratio": 0.9
        },
        {
          "type": "Placeholder",
          "name": "exv_1",
          "n_equations": 2
        },
        {
          "type": "FloodedEvaporator",
          "name": "evap_1",
          "ua": 20000.0,
          "refrigerant": "R134a",
          "secondary_fluid": "MEG",
          "target_quality": 0.7
        }
      ],
      "edges": [
        { "from": "comp_1:outlet",   "to": "mchx_1a:inlet" },
        { "from": "mchx_1a:outlet",  "to": "mchx_1b:inlet" },
        { "from": "mchx_1b:outlet",  "to": "exv_1:inlet" },
        { "from": "exv_1:outlet",    "to": "evap_1:inlet" },
        { "from": "evap_1:outlet",   "to": "comp_1:inlet" }
      ]
    }
  ],

  "solver": {
    "strategy": "newton",
    "max_iterations": 100,
    "tolerance": 1e-6
  },

  "metadata": {
    "note": "Demo MCHX 4 coils + FloodedEvap 2 circuits via CLI",
    "mchx_coil_0_fan": "100% (design point)",
    "mchx_coil_1_fan": "80% (anti-override actif)",
    "mchx_coil_2_fan": "100% (design point)",
    "mchx_coil_3_fan": "90%",
    "glycol_type": "MEG 35%",
    "t_air_celsius": 35.0
  }
}