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zbskii · 25th May 2006, 21:55

What were the specs on the membrane you were using? I'm not sure what's needed for diving, but there's serveral different membranes on GE's site:
http://www.osmolabstore.com/OsmoLabP...ldPage&1&1&200
Note the 10 micron membrane has like 400% more flow than most of the others.

Quote: (Originally Posted by decoweenie)

Yes, done it for the SK since it is the easier to test.

Used the same material in the rod pod (i.e. 1.5" diameter) and on top of the scrubber entrance (i.e. 4" diameter).

The WOB difference between the 2 locations was exponential. I can't even able to pull a breath comfortably with the smaller diameter in 1-meter of pool water.

When changed to the larger location, the WOB was much less but still noticeable. At the end, I used neither.

If you are going to use any kind of hydrophobic membrane in the unit, I would suggest fitting it in the largest diameter location to give as much surface for the air to go thru as possible.

25th May 2006, 21:55	#5 (permalink)
zbskii I have a diving problem. Current Rebreather/s: Sport Kiss Other Rebreather/s: Join Date: Dec 2005 Location: Portland, OR Posts: 138	Re: Hydrophobic membrane in loop? What were the specs on the membrane you were using? I'm not sure what's needed for diving, but there's serveral different membranes on GE's site: http://www.osmolabstore.com/OsmoLabP...ldPage&1&1&200 Note the 10 micron membrane has like 400% more flow than most of the others. Quote: (Originally Posted by decoweenie) Yes, done it for the SK since it is the easier to test. Used the same material in the rod pod (i.e. 1.5" diameter) and on top of the scrubber entrance (i.e. 4" diameter). The WOB difference between the 2 locations was exponential. I can't even able to pull a breath comfortably with the smaller diameter in 1-meter of pool water. When changed to the larger location, the WOB was much less but still noticeable. At the end, I used neither. If you are going to use any kind of hydrophobic membrane in the unit, I would suggest fitting it in the largest diameter location to give as much surface for the air to go thru as possible.
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