Quote:
| Originally Posted by Padowan I have a sealed container which has the contents from my scrubber that I emptied out before I took the box on holiday - it had done about 30 shallow minutes, and was completely dry when I tipped it out. |
Lets say it is 15% used. Let's assume you remix it evenly. Since you used it shallow the reaction front would have been very narrow and that is going to be effectively 15% totally used up granules mixed in with good ones. Diving deeper the front is wider. Gordon Henderson explained why in
Planet Zorg better than I ever could.
It is not just a case that the reaction front will be 15% wider but "is there a stepping path from used granule to used granule" so it will channel sooner than you expect. My guess is that rather than giving you the normal case of no CO2 until the reaction front touches the top when it breaks through it will give you some CO2 (ppm to start with) increasing with time as CO2 takes paths through the used up bits. You have gone to a statistical model for CO2 not a brick wall. This is a whole different take on scrubber duration and I wouldn't want to pioneer this one.
It's what? 8 quid a fill? You're throwing away 6 pounds. CO2 breakthrough seems to be the worst thing that can happen to us because nothing goes beep and at depth it doesn't seem to feel obvious. For example see
Alasdair Allan's report recently.
I bid chuck it out.
nigelH