Quote: (Originally Posted by
Freef)
So I was wrong to assume a fixed volume, and my figures gave a shorter time to metabolise the pO2. Looks like it's you who is the SCR guru!
Appropriate green sent and humble pie in the oven. If you find these figures wrong I'll sulk though!
The real problem with attempting to rely on the pO2 dropping in this way is that the loop will be collapsing by 2.2L at 40m to drop the pO2. I think that this is about the volume of the exhale CL. It will become difficult to breathe as the loop volume decreases, and when the gas is turned back on the ADV will be likely to fire, adding more O2 to the loop.
The conclusion in part could be that running comparably hot diluents at differents depths, then its will take longer to breathe it down at shallows. Even more so since the loop-redution is bigger and therefor even more O2 gets added. This is however offset by the fact that the relative pressure drops faster when you ascend, and allso that you dont have any advantage to that hot diluents when shallow, unless for deco-mixes (It's really a matter of how high a PPO2 you willing to run when flushing, and then how low a flow you can safely use)....
About the guru-part I respectfully decline, with only 20mins on a dolphin, and only 5mins SCR on my rEvo. I may find the theory intersting, but I normally have little practical idea what I talking about (yeah I'm an engineer
).
I tend to go out on a theoretical limb, just see the SCR-bailout-thead......
Thanks for the green - I will however still judge impartially in the caption-contest
Regards
Nicolai