{
  "name": "BPHX Evaporator + Condenser — standalone runnable examples",
  "fluid": "R410A",
  "circuits": [
    {
      "id": 0,
      "name": "Evaporator circuit (R410A / Water)",
      "components": [
        {
          "type": "RefrigerantSource",
          "name": "ref_src_evap",
          "fluid": "R410A",
          "p_set_bar": 4.0,
          "quality": 0.2
        },
        {
          "type": "BphxEvaporator",
          "name": "evap",
          "refrigerant": "R410A",
          "secondary_fluid": "Water",
          "mode": "dx",
          "target_superheat_k": 5.0,
          "dh_m": 0.003,
          "area_m2": 0.5,
          "n_plates": 20,
          "hot_fluid": "Water",
          "hot_t_inlet_c": 12.0,
          "hot_pressure_bar": 2.0,
          "hot_mass_flow_kg_s": 0.5,
          "cold_fluid": "R410A",
          "cold_t_inlet_c": 2.0,
          "cold_pressure_bar": 4.0,
          "cold_mass_flow_kg_s": 0.1
        },
        {
          "type": "RefrigerantSink",
          "name": "ref_snk_evap",
          "fluid": "R410A",
          "p_back_bar": 4.0
        }
      ],
      "edges": [
        { "from": "ref_src_evap:outlet", "to": "evap:inlet" },
        { "from": "evap:outlet",         "to": "ref_snk_evap:inlet" }
      ]
    },
    {
      "id": 1,
      "name": "Condenser circuit (R410A / Water)",
      "components": [
        {
          "type": "RefrigerantSource",
          "name": "ref_src_cond",
          "fluid": "R410A",
          "p_set_bar": 18.0,
          "quality": 1.0
        },
        {
          "type": "BphxCondenser",
          "name": "cond",
          "refrigerant": "R410A",
          "secondary_fluid": "Water",
          "target_subcooling_k": 3.0,
          "dh_m": 0.003,
          "area_m2": 0.5,
          "n_plates": 20,
          "hot_fluid": "R410A",
          "hot_t_inlet_c": 45.0,
          "hot_pressure_bar": 18.0,
          "hot_mass_flow_kg_s": 0.1,
          "cold_fluid": "Water",
          "cold_t_inlet_c": 25.0,
          "cold_pressure_bar": 2.0,
          "cold_mass_flow_kg_s": 0.5
        },
        {
          "type": "RefrigerantSink",
          "name": "ref_snk_cond",
          "fluid": "R410A",
          "p_back_bar": 18.0
        }
      ],
      "edges": [
        { "from": "ref_src_cond:outlet", "to": "cond:inlet" },
        { "from": "cond:outlet",         "to": "ref_snk_cond:inlet" }
      ]
    }
  ],
  "solver": {
    "strategy": "fallback",
    "max_iterations": 50,
    "tolerance": 1e-6
  }
}