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silent running · 20th December 2007, 08:10

Quote: (Originally Posted by decoweenie)

Looks the same from the pictures.

Looks like the pre-scrubbed gas on the outside, mix with O2 injection, go down the outside of the radial scrubber toward the inside tube, up to the sensor chamber, then thru the center tube out...

So am I to understand that:

The HH is an out-in flow radial?

And that an out-in flow design also means the O2 cells are more likely placed in a such a way as to incidentally function as a barrier between inhaled and exhaled gas?

If this is true then firstly, why would you want to have your exhaled breath and the reaction front of the scrubber nearest the cold water instead of in the middle, where both your exhaled breath/body heat and the scrubber reaction are further away from the cold water and thus better insulated?

And why, given the less than perfect construction of most O2 cells, would you allow them to function as any kind of a barrier between inhale and exhaled gas?

What am I missing here?

20th December 2007, 08:10	#10 (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: 1,836	Re: Hammerhead CCR Web Pages Up Quote: (Originally Posted by decoweenie) Looks the same from the pictures. Looks like the pre-scrubbed gas on the outside, mix with O2 injection, go down the outside of the radial scrubber toward the inside tube, up to the sensor chamber, then thru the center tube out... So am I to understand that: The HH is an out-in flow radial? And that an out-in flow design also means the O2 cells are more likely placed in a such a way as to incidentally function as a barrier between inhaled and exhaled gas? If this is true then firstly, why would you want to have your exhaled breath and the reaction front of the scrubber nearest the cold water instead of in the middle, where both your exhaled breath/body heat and the scrubber reaction are further away from the cold water and thus better insulated? And why, given the less than perfect construction of most O2 cells, would you allow them to function as any kind of a barrier between inhale and exhaled gas? What am I missing here?
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