Site Details - Outdoor Air CO2 and Contaminants

Location tab on model data at Site level

 

The Outdoor air CO2 and generic contaminants data at site level provides a way to select which contaminant types will be simulated. Although carbon dioxide is not normally considered to be an indoor contaminant it is used as an indicator of indoor air quality in buildings. From the simulation point of view EnergyPlus treats carbon dioxide as a type of contaminant. In addition to carbon dioxide, a generic contaminant type model is available.

 

These options should be selected if you wish to model CO2 or contaminant concentration levels in the simulation, either to monitor zone air quality or if DCV control is being used.

Note: DesignBuilder automatically selects the CO2 concentration and Generic contaminant concentration options below as appropriate if you have one of the IAQP DCV systems requiring CO2 or generic contaminant tracking selected in a Detailed HVAC model.

Simulate CO2 concentration

Check this option if simulation of CO2 concentration levels are to be performed.

CO2 concentration schedule

Select the schedule that defines outdoor air carbon dioxide level values in units of ppm. The default schedule defines outdoor constant CO2 concentration at 400ppm based on NOAA ESRL sources.

Simulate contaminant concentration

Check this option if simulation of contaminant concentration levels are to be performed.

 

You can enter details on zone contaminant generation and removal on the Activity tab.

Contaminant schedule

Select the schedule that defines outdoor air contaminant level values in units of ppm.