Built In 4 Easy Steps
Barbecue Exhaust Hose
I started at the source of the CO2, and taped a dryer hose on top of the barebecue. This allowed the CO2 to be exhausted away from the barbecue for the next step. After around 10 minutes the tae would melt and have to be replaced. Next time I could use kapton tape for it's higher heat resistance.
Airflow Fan
To help accelerate the exhaustion of the air from the hose I used a 90mm 12V fan to move air. In the future it would be cool to use the barbecues otherwise unused heat energy to power the fan.
Carbon Filter
To capture the CO2 I 3D printed a filter out of ABS. Then I filled it with activated carbon pelletes. And to retain the pellets I used a mesh-like fabric on both sides.
CO2 Monitoring
After passing the air throught the filter. It entered a close to aritight 3D printed chamber. Inside of the chamber I added a CO2 Monitor to measure the CO2 levels after the tests.
