{
  "rows": [
    {
      "part": "cold core",
      "material": "6061-T6 aluminium",
      "mass_kg": 1.0,
      "target_K": 100.0,
      "precool_UA_W_K_target": 35.0,
      "heat_removed_J": 152643.1737900494,
      "entropy_removed_J_K": 808.4159743394922,
      "cooldown_s": 45.58601515727783
    },
    {
      "part": "recuperator",
      "material": "6061-T6 aluminium",
      "mass_kg": 2.0,
      "target_K": 183.0,
      "precool_UA_W_K_target": 70.0,
      "heat_removed_J": 193841.2444156487,
      "entropy_removed_J_K": 824.4349582554894,
      "cooldown_s": 17.79901132571161
    },
    {
      "part": "warm core",
      "material": "6061-T6 aluminium",
      "mass_kg": 1.0,
      "target_K": 280.0,
      "precool_UA_W_K_target": 35.0,
      "heat_removed_J": 12283.849588918712,
      "entropy_removed_J_K": 42.86882362318169,
      "cooldown_s": 1.677892058564678
    },
    {
      "part": "compressor",
      "material": "316 stainless",
      "mass_kg": 0.5,
      "target_K": 105.0,
      "precool_UA_W_K_target": 20.0,
      "heat_removed_J": 38671.20231199467,
      "entropy_removed_J_K": 202.47754869248703,
      "cooldown_s": 19.400854029817364
    },
    {
      "part": "cold pipe and inner vessel",
      "material": "316 stainless",
      "mass_kg": 1.5,
      "target_K": 90.0,
      "precool_UA_W_K_target": 35.0,
      "heat_removed_J": 122003.6519493199,
      "entropy_removed_J_K": 668.873385964107,
      "cooldown_s": 42.09723169143697
    },
    {
      "part": "expander housing",
      "material": "316 stainless",
      "mass_kg": 1.0,
      "target_K": 270.0,
      "precool_UA_W_K_target": 20.0,
      "heat_removed_J": 11075.074574968721,
      "entropy_removed_J_K": 39.34717749638111,
      "cooldown_s": 2.7137418075543343
    }
  ],
  "metal_heat_removed_J": 530518.1966309,
  "heat_leak_during_prep_J": 683.7902273591674,
  "total_precooling_heat_J": 531201.9868582592,
  "cooldown_s": 45.58601515727783,
  "coolant_boiloff_before_driving_kg": 2.6669972595666254,
  "coolant_remaining_after_prep_kg": 3.3330027404333746,
  "cold_availability_gained_by_metal_J": 227690.20148209913,
  "metal_cooldown_entropy_generation_J_K": 4271.810279780906,
  "metal_cooldown_exergy_destroyed_J": 1252281.1835177725,
  "external_preparation_reversible_floor_for_6kg_J": 4450117.254184179,
  "startup_DC_energy_J_target": 2000.0,
  "prepared_loop_gas_mass_kg_target": 0.05,
  "interpretation": "Lumped regulated precooling from 293.15 K to specified operating wall targets. UA, cold-metal masses and target temperatures are explicit design requirements. Maximum coolant mass is retained in the vehicle mass calculation; boiloff mass reduction gives no performance credit."
}