Dear building-sim,

I'm currently working on a LEED NC sports facility with an underground
parkade for approximately 200 cars.

The parkade exhaust system (100% OA) turns on if the CO2
levels detected in the parkade exceed a particular threshold. Has anybody modeled such a system? What
assumptions can be made for the CO2 profile? As it is in a northern climate, I
do not want to overestimate the usage of the system which would skew the heating
energy required to heat the OA to the required supply temperature.

Your help is greatly appreciated.

Thanks

Donal