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Thread: Cryogenic rebreather

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    New Member Dremer is an unknown quantity at this point Dremer's Avatar
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    Cryogenic rebreather

    There have been plans for a "cryogenic rebreather". It has a tank of liquid oxygen and no absorbent canister. The carbon dioxide is frozen out in a "snow box" by the cold produced as the liquid oxygen expands to gas as the oxygen is used and is replaced from the oxygen tank.
    Such a rebreather called the S-1000 was built around or soon after 1960 by Sub-Marine Systems Corporation. It had a duration of 6 hours and a maximum dive depth of 200 meters of salt water. Its ppO2 could be set to anything from 0.2 bar to 2 bar without electronics, by controlling the temperature of the liquid oxygen, thus controlling the equilibrium pressure of oxygen gas above the liquid. The diluent could be either liquid nitrogen or helium depending on the depth of the dive. The set could freeze out 230 grams of carbon dioxide per hour from the loop, corresponding to an oxygen consumption of 2 liters per minute. If oxygen was consumed faster (high workload), a regular scrubber was needed. See Fischel H., Closed circuit cryogenic SCUBA, "Equipment for the working diver" 1970 symposium, Washington, DC, USA. Marine Technology Society 1970:229-244.
    See also Cushman, L., Cryogenic Rebreather, Skin Diver magazine, June 1969, and reprinted in Aqua Corps magazine, N7, 28, 79.
    There are articles on the web about a cryogenic rebreather called Titanic II. These articles are a hoax; some of them include unrealistic technology.

    from: http://en.wikipedia.org/wiki/Rebreather

    What do you think about?
    Have Anybody any experiences?
    Thank very much!
    Dremer

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    Re: Cryogenic rebreather

    Quote Originally Posted by Dremer
    There have been plans for a "cryogenic rebreather". It has a tank of liquid oxygen and no absorbent canister. The carbon dioxide is frozen out in a "snow box" by the cold produced as the liquid oxygen expands to gas as the oxygen is used and is replaced from the oxygen tank.
    Such a rebreather called the S-1000 was built around or soon after 1960 by Sub-Marine Systems Corporation. It had a duration of 6 hours and a maximum dive depth of 200 meters of salt water. Its ppO2 could be set to anything from 0.2 bar to 2 bar without electronics, by controlling the temperature of the liquid oxygen, thus controlling the equilibrium pressure of oxygen gas above the liquid. The diluent could be either liquid nitrogen or helium depending on the depth of the dive. The set could freeze out 230 grams of carbon dioxide per hour from the loop, corresponding to an oxygen consumption of 2 liters per minute. If oxygen was consumed faster (high workload), a regular scrubber was needed. See Fischel H., Closed circuit cryogenic SCUBA, "Equipment for the working diver" 1970 symposium, Washington, DC, USA. Marine Technology Society 1970:229-244.
    See also Cushman, L., Cryogenic Rebreather, Skin Diver magazine, June 1969, and reprinted in Aqua Corps magazine, N7, 28, 79.
    There are articles on the web about a cryogenic rebreather called Titanic II. These articles are a hoax; some of them include unrealistic technology.

    from: http://en.wikipedia.org/wiki/Rebreather

    What do you think about?
    Have Anybody any experiences?
    Thank very much!
    Dremer
    Hmm, yeah. I think you should mix the liquid gas with vodka to prevent it freezing over. What do you think?
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    Re: Cryogenic rebreather



    Last edited by Louby Lou; 8th January 2006 at 11:12.

  4. #4
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    Re: Cryogenic rebreather

    Yeah MAN' there all the rage here in Italy!!

    Give it time and you'll all want one. :D

    Rock on.

  5. #5
    New Member Janwillem Bech has a spectacular aura about Janwillem Bech has a spectacular aura about Janwillem Bech has a spectacular aura about Janwillem Bech has a spectacular aura about Janwillem Bech has a spectacular aura about Janwillem Bech has a spectacular aura about Janwillem Bech's Avatar
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    Re: Cryogenic rebreather

    http://www.therebreathersite.nl/cryo_pjotrr.htm

    You might bee interested to see this.

    and this:

    http://www.therebreathersite.nl/Zuur..._generator.htm

    and the principle is much much older than you would expect:

    http://www.therebreathersite.nl/Zuur...h/aerorlox.htm

    Have fun reading this.
    Please cc your reply to jw.bech@quicknet.nl

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    Re: Cryogenic rebreather

    I thought the Russian "Cryolung Eliteor" was copied by the Americans not the other way around. We still have designs for a small portible liquid air generator you could use to fill if anyone is that brave!! We used to supply valves to Siebe Gorman the other main designer for LOX mine rescue BA.

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    Re: Cryogenic rebreather

    Interesting...Sounds cold to breathe off of.

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    Re: Cryogenic SCUBA

    Nick Icorn, who owns the scuba collection including many a rebreather, worked on a cryogenic scuba unit in the 60s. Unfortunately all that's ;eft of it are 3 old pictures. The unit wasn't closed circuit, though.
    Attached Images

  9. #9
    New Member Dremer is an unknown quantity at this point Dremer's Avatar
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    Re: Cryogenic rebreather

    It seems to be science fiction !

  10. #10
    James Moore James Moore is an unknown quantity at this point James Moore's Avatar
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    Re: Cryogenic rebreather

    Quote Originally Posted by iain-hsm  View Original Post
    I thought the Russian "Cryolung Eliteor" was copied by the Americans not the other way around. We still have designs for a small portible liquid air generator you could use to fill if anyone is that brave!! We used to supply valves to Siebe Gorman the other main designer for LOX mine rescue BA.
    Hello, James Moore here. I am highly interested in the portable liquid air generator and other liquid air handling equipment that you describe. If you could supply a contact at Siebe Gorman that would be great.
    I am currently designing underwater energy supplies and the cryogenic gas is an excellent energy storage medium.
    Thanks very much for your post, are you interested in collaborating on my plan?

    Jim Moore

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