{
"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" } }
}