{

"constants": {
  "skylight_to_roof_ratio_max_value": {
    "data_type": "value",
    "refs": [
      "NECB2011_S_3.2.1.4(2)"
    ],
    "value": 1.1,
    "units": "ratio",
    "notes": ""
  },
  "sizing_factor_max_cooling": {
    "data_type": "value",
    "refs": [
      "NECB2011_S_8.4.4.9(1)"
    ],
    "value": 1.1,
    "units": "ratio",
    "notes": ""
  },
  "sizing_factor_max_heating": {
    "data_type": "value",
    "refs": [
      "NECB2011_S_8.4.4.9(2)"
    ],
    "value": 1.3,
    "units": "ratio",
    "notes": ""
  },
  "fan_constant_volume_pressure_rise_value": {
    "data_type": "value",
    "refs": [
      "NECB2011_S_5.Assumption"
    ],
    "value": 640.0,
    "units": "Pa",
    "notes": ""
  },
  "return_fan_constant_volume_pressure_rise_value": {
    "data_type": "value",
    "refs": [
      "MNECB Table 5.4.1.A value"
    ],
    "value": 150.0,
    "units": "Pa",
    "notes": "Sets the return fan pressure rise for constant speed return fans based on the MNECB"
  },
  "supply_fan_variable_volume_pressure_rise_value": {
    "data_type": "value",
    "refs": [
      "NECB2011_S_5.Assumption"
    ],
    "value": 1000.0,
    "units": "Pa",
    "notes": "Sets the supply fan pressure rise based on the Prototype buildings inputs"
  },
  "return_fan_variable_volume_pressure_rise_value": {
    "data_type": "value",
    "refs": [
      "NECB2011_S_5.Assumption"
    ],
    "value": 250.0,
    "units": "Pa",
    "notes": "Sets the return fan pressure rise based on the Prototype buildings inputs"
  },
  "infiltration_rate_m3_per_s_per_m2":{
  "data_type": "value",
  "refs": [
    "DOE Technical Report NREL/TP-5500-46861 Report Existing Building Infiltration rate, pg. 29."
  ],
  "value": 0.001116,
  "units": "m3/s/m2",
  "notes": "Rate = 7.5 L/s/m^2 at 75 Pa converted to rate at 4 Pa assuming n = 0.65"
},
  "infiltration_constant_term_coefficient":{
    "data_type": "value",
    "refs": [
      "NECB2011_S_5.Assumption"
    ],
    "value": 0.0,
    "units": "",
    "notes": ""
  },
  "infiltration_temperature_term_coefficient":{
  "data_type": "value",
  "refs": [
    "NECB2011_S_5.Assumption"
  ],
  "value": 0.0,
  "units": "",
  "notes": ""
},
  "infiltration_velocity_term_coefficient":{
  "data_type": "value",
  "refs": [
    "Assumption"
  ],
  "value": 0.224,
  "units": "",
  "notes": ""
},
  "infiltration_velocity_squared_term_coefficient":{
  "data_type": "value",
  "refs": [
    "Assumption"
  ],
  "value": 0.0,
  "units": "",
  "notes": ""
},
  "exhaust_fan_pressure_rise_value": {
    "data_type": "value",
    "refs": [
      "Pressure rise value for most entries in ASHRAE 90.1-2010 Table 6.5.3.1.1B"
    ],
    "value": 125.0,
    "units": "Pa",
    "notes": "Sets the exhaust fan pressure rise based on ASHRAE 90.1"
  }
}

}