{
  "schema_version": "1.0.0",
  "model_version": "2026-09-12.1",
  "status": "synthetic_teaching_data",
  "language": "en",
  "workshop": "heat-pumps",
  "title": "Heat pumps and useful heat",
  "assumptions": "Each bin COP includes internal unit consumption. External auxiliaries are added once. Backup replaces the specified share of bin-4 heat at a factor of 1. Capacity, defrost and allowable-temperature checks require the equipment documentation.",
  "inputs": {
    "hours1": {
      "value": 1200,
      "unit": "h",
      "description": "Bin 1: hours"
    },
    "load1": {
      "value": 3,
      "unit": "kWₜₕ",
      "description": "Bin 1: heat load"
    },
    "cop1": {
      "value": 4.5,
      "unit": "",
      "description": "Bin 1: COP"
    },
    "hours2": {
      "value": 1600,
      "unit": "h",
      "description": "Bin 2: hours"
    },
    "load2": {
      "value": 5,
      "unit": "kWₜₕ",
      "description": "Bin 2: heat load"
    },
    "cop2": {
      "value": 3.7,
      "unit": "",
      "description": "Bin 2: COP"
    },
    "hours3": {
      "value": 1200,
      "unit": "h",
      "description": "Bin 3: hours"
    },
    "load3": {
      "value": 8,
      "unit": "kWₜₕ",
      "description": "Bin 3: heat load"
    },
    "cop3": {
      "value": 2.8,
      "unit": "",
      "description": "Bin 3: COP"
    },
    "hours4": {
      "value": 400,
      "unit": "h",
      "description": "Bin 4: hours"
    },
    "load4": {
      "value": 10,
      "unit": "kWₜₕ",
      "description": "Bin 4: heat load"
    },
    "cop4": {
      "value": 2.2,
      "unit": "",
      "description": "Bin 4: COP"
    },
    "aux": {
      "value": 450,
      "unit": "kWh",
      "description": "External auxiliary energy"
    },
    "backup": {
      "value": 0,
      "unit": "%",
      "description": "Backup heating in bin 4"
    },
    "tariff": {
      "value": 0.18,
      "unit": "€/kWh",
      "description": "Electricity price"
    }
  }
}