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I recently bought an Algae Powered CO2 scrubber. No idea how effective it is, I wonder what the easiest way to measure is?
by yawgmoth 4y ago
I recently bought an Algae Powered CO2 scrubber. No idea how effective it is, I wonder what the easiest way to measure is?
- antisthenes 4y agoA CO2 meter? ...
- yawgmoth 4y agoYeah! I was thinking "ah the room isn't sealed, nor is the house for that matter" but I can probably get interesting measurements with a simple CO2 meter.
- NavinF 4y agoCO2 meter and a 30 gallon garbage bag to seal the meter inside along with the algae?
- K2h 4y agoIf you try to measure CO2 usage, be aware of the fineprint in your sensor, depending on the sensor it may just take the lowest reading over some period and self calibrate (incorrectly) as normal air CO2 concentration (~400ppm) <https://www.extech.com/products/CO240 https://www.extech.com/products/CO240> Automatic CO2 Baseline Calibration (ABC) The ABC algorithm continually tracks the sensor’s lowest reading over a fixed time interval and slowly corrects for any long-term drift (as compared to the expected fresh air value of 400ppm). The ABC period is 15 days, during which the ABC function default is always on.
- antisthenes 4y agoYou could also drain the water and measure the weight of the algae.
- slavik81 4y agoThe CO2 that it absorbs has to be stored. Measure the change in weight.
- ajmurmann 4y agoI looked into this for a few minutes when a huge algae CO2 scrubber in am airport was discussed a few weeks back. The short is that it does close to nothing: https://news.ycombinator.com/item?id=33173230 https://news.ycombinator.com/item?id=33173230 It's too bad because one of my weird dreams would be to have a vat of genetically modified algae in my house that removes CO2 and turns into some kind of Soylent.