Status of "tankless" breathing system?

[Jake]

This should probably go somewhere in the equipment section, but maybe this will work as well.

Out of curiosity, has anyone heard anything on the commercialization or further progression of the tankless breathing system that came into the news a year or so ago?

This is something that I would love to experiment with. If anyone needs a lab rat, I'm your guy!

 

[Codyjp]

Neat idea neighbor. How much would the batteries weigh?

 

[kidspot]

From http://www.isracast.com/tech_news/310505_tech.htm

Calculations showed that a one kilo Lithium battery can provide a diver with about one hour of diving time.

 

[Codyjp]

humm, so if i replaced a 35# tank with one of these i could be down for 17 hours? sounds good to me!!!!

Heck, i COULD run out of bottom time at that rate!

 

[kidspot]

Don't forget that this is really a rebreather based system. So you will have the bulk/weight of a current rebreather unit with all it's limitations (media life etc.)

The nice part of incorporating it into a rebreather, as the inventor states, is that the amount of water required drops from 2000 liters/minute to 250 liters/minute.

I still wonder if that water could not be directed and used as means of propulsion...

 

[gregmontalbano]

This is something that I would love to experiment with.

It sure sounds like a fun/cool idea on land, but i'd never ever do it...or even say I would.

 

[Tassie_Rohan]

Wow- you can do anything with a flow chart! Any ideas how the box titled ‘Air Separator’ will actually work, and what sort of power or size it will have to be to deliver 30 Lpm.

Reading the link – the science is all wrong.

What is ‘dissolved air’? Does this mean there is an air molecule? I thought air was a mixture of gasses: largely nitrogen and oxygen.

Fish transfer dissolved oxygen (and nitrogen, carbon dioxide, etc) to and from water, not ‘dissolved air’.

Dropping the pressure will cause water to enter the gaseous phase (such as during cavitations by a ships propeller or boiling): is this gas he’s discovered with his centrifuge? I don’t know if I would enjoy breathing H2O vapour, even if it could be kept stable: what stops the vapor bubble from collapsing once the pressure has returned to normal out of his low pressure ‘air separator’?

I want a box in the flow chart for a machine that extracts dissolved gold from water so I can pay for my dive trips.

Cheers,
Rohan.

 

[gregmontalbano]

Fish transfer dissolved oxygen (and nitrogen, carbon dioxide, etc) to and from water, not ‘dissolved air’.

I could be wrong, but isnt o2,n2, co2 "air" or 'dissolved air' in this case?

 

[Matsya]

Is it possible to extract "AIR" from water? I should think you can extract only "OXYGEN" from water? And if that is the case you would be breathing 100% oxygen?

 

[Matsya]

While o2, n2 & co2 are components of air, are they present in the same proportion in sea water as they are present in air? And will the system extract them and supply them mixed in the same proportion as they are present in air?