Rebreather World - View Single Post - New CCRB Sentinel Rebreather aka Baby Boris

silent running · 19th October 2007, 09:48

Dave, thanks for the clarifications and walking me through it.

I think I understand the servo assist idea, maybe a bit like a bellows works. And if 2 CLs do slow down gas velocity and incresase dwell time, wouldn't 3 lungs slow it down 1/3 more than 2 CLs?

As for the widening of the Sentinel scrubber helping with insulation, which in effect is functioning like a 2nd lung in a single lung design, would you take a guess at how much the gap is between the inside scrubbber stack and the outside housing? This design sounds a bit like the Prism radial-about .5 inch between the scrubber stack and the housing, thus providing insulation for the exhaled gas which travels in-out and up through the gap. Not sure of the gas flow direction in the Sentinel. The next question is: which is the best direction from an insulation scrubber efficiency standpoint-gas flowing in through that gap, or out through the gap?

By the hose t's being on the shoulder, do you mean resting them at the highest point, or on the front of the shoulder, or somewhere else?

19th October 2007, 09:48	#36 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,813	Re: New CCRB Sentinel Rebreather aka Baby Boris Dave, thanks for the clarifications and walking me through it. I think I understand the servo assist idea, maybe a bit like a bellows works. And if 2 CLs do slow down gas velocity and incresase dwell time, wouldn't 3 lungs slow it down 1/3 more than 2 CLs? As for the widening of the Sentinel scrubber helping with insulation, which in effect is functioning like a 2nd lung in a single lung design, would you take a guess at how much the gap is between the inside scrubbber stack and the outside housing? This design sounds a bit like the Prism radial-about .5 inch between the scrubber stack and the housing, thus providing insulation for the exhaled gas which travels in-out and up through the gap. Not sure of the gas flow direction in the Sentinel. The next question is: which is the best direction from an insulation scrubber efficiency standpoint-gas flowing in through that gap, or out through the gap? By the hose t's being on the shoulder, do you mean resting them at the highest point, or on the front of the shoulder, or somewhere else?
(Offline)