SamT
Moderator
right - we're having CO2 problems at a dig face
(body sized tube, filled to roof with loose sand, virutually horizontal but dips down slightly so CO2 will sump)
Its not desperate - but after a couple of hours - we are getting a bit short of breath/panting/claustrophobic.
at the moment we've got 2 times 12v pc fans, inline, blowing down a rainwater drainpipe, that then reduces to plastic overflow pipe (inch ish) to go along to the dig face.
its kinda working, but at about 10 meters - its barely managing to push the air far enough.
Wondered if anyones got any ideas for 12v fans that would provide a bit more omph. beter still - powerful enough to suck the co2 out.
(body sized tube, filled to roof with loose sand, virutually horizontal but dips down slightly so CO2 will sump)
Its not desperate - but after a couple of hours - we are getting a bit short of breath/panting/claustrophobic.
at the moment we've got 2 times 12v pc fans, inline, blowing down a rainwater drainpipe, that then reduces to plastic overflow pipe (inch ish) to go along to the dig face.
its kinda working, but at about 10 meters - its barely managing to push the air far enough.
Wondered if anyones got any ideas for 12v fans that would provide a bit more omph. beter still - powerful enough to suck the co2 out.