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  1. #1
    TDF Member Piemaster's Avatar
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  2. #2
    Grumpy Git, Not Old Yet...
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    oh wow...
    DISCLAIMER: If you don't understand this shit, ask a grown up, preferably someone with deep pockets, who your widow/kids can sue. Don't trust people on the internet with your life, your credit card details or your naked selfies! This advice may contain, or indeed be written by someone who is (clinically), nuts.

  3. #3
    Bewildered Nomad Phate's Avatar
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    I...errm....*backs away*

  4. #4
    Established TDF Member ziggi's Avatar
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    9 meteres maximum depth! (ignoring any other crap i can't be bothered reading) i don't think it will have the manufactures too worried!

  5. #5
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    Looks like an idea looking for a problem.

    Snuba would be a better answer at those depths I think.

  6. #6
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    The lengths people will go to avoid air fills!

  7. #7
    Established TDF Member nigel hewitt's Avatar
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    Seawater? That's going to preferentially produce chlorine at the oxygen electrode. The oxygen will react with Sodium.

    Plus the battery is going to have to be magic - we're taking Kw hrs here not Amp hours.
    I think it's about 5KWhr for a kilo of Oxygen and it's not a rebreather so you need to produce your SAC worth of gas in time for every breath.

    And deep you carry a top up bottle of nitrogen. Do the sums.
    Last edited by nigel hewitt; 08-09-2016 at 12:16 PM.
    Helium, because I'm worth it.
    Waterboarding at Guantanamo Bay sounded like a radical holiday opportunity until I looked it up.

  8. #8
    Happy atheist, despite the "evidence"...
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    Quote Originally Posted by nigel hewitt View Post
    Seawater? That's going to preferentially produce chlorine at the oxygen electrode. The oxygen will react with Sodium.

    Plus the battery is going to have to be magic - we're taking Kw hrs here not Amp hours.
    I think it's about 5KWhr for a kilo of Oxygen and it's not a rebreather so you need to produce your SAC worth of gas in time for every breath.

    And deep you carry a top up bottle of nitrogen. Do the sums.
    FFS, Mr Hewitt, stop letting physics get in the way of progress.

    Luddites, the lot of you.
    Happy to be a feminist SJ(K)W snowflake in a godless universe, no matter what some experts think.

  9. #9
    GUE Tech and Cave Instructor johnkendall's Avatar
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    Having just looked it up its about 13MJ of energy to electrolyse 1kg of water, so yeah, I definitely want some of those batteries that hardly weigh anything but can power that.

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    John Kendall
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  10. #10
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    Quote Originally Posted by johnkendall View Post
    Having just looked it up its about 13MJ of energy to electrolyse 1kg of water, so yeah, I definitely want some of those batteries that hardly weigh anything but can power that.

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    You and Tesla industries !




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