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openair-collective / openair-epiphyte

Epiphyte is a miniature, stand-alone, open source direct air capture machine that removes CO2 from the air, designed by OpenAir volunteers.
CERN Open Hardware Licence Version 2 - Permissive
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ENGR: CO2 sensors: Decrease turbulence/increase reliability #13

Open KCollins opened 3 months ago

KCollins commented 3 months ago

Related to Issue #12 .

With our CO2 sensors we also experienced a lot of turbulence and noise, making it hard to measure accurately. In addition to a product upgrade we also need to reconsider the chamber and sorbent panel design design to optimize for smoother air flow, and an alternate method of sheltering the sensor head..

mxbifurcations commented 2 months ago

I took inspiration from Epiphyte for a slightly different purpose : make a buffering device in a greenhouse heated by a biochar unit. The DAC device in adsorption mode should clip CO2 above 1300ppm and should sustain CO2 level under 600 ppm when in desorption mode. I want to add a parallel pipe to reduce turbulences around the oulet sensor with geotextile layers. I looked at images of CFD for filters but did not perform CFD for this parallel chamber myself.

DAC BECCS CARBONE URBAIN