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RE: [PSUBS-MAILIST] CNG power for subs

To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] CNG power for subs
From: irox <irox@ix.netcom.com>
Date: Tue, 27 Jul 2010 13:30:14 -0400 (EDT)
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Reply-to: personal_submersibles@psubs.org
Sender: owner-personal_submersibles@psubs.org

Thought about it, but the power density of diesel is
hard too beat.  The marine fowling issue with diesel
could be somewhat offset by using bio-diesel.

Cheers,
  Ian.

-----Original Message-----
>From: Brian Cox <ojaivalleybeefarm@dslextreme.com>
>Sent: Jul 27, 2010 1:19 PM
>To: personal_submersibles@psubs.org
>Subject: RE: [PSUBS-MAILIST] CNG power for subs
>
>Ian,
>       Are you considering CNG for your sub?
>
>Brian
>
>-----Original Message-----
>From: owner-personal_submersibles@psubs.org
>[mailto:owner-personal_submersibles@psubs.org]On Behalf Of irox
>Sent: Tuesday, July 27, 2010 9:41 AM
>To: personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] CNG power for subs
>
>
>
>Hi Brian,
>
>the main issue with gasoline/petrol is that it's heavier than air.
>This is a major issue for submarines since the pressure hull will
>fill up with volatile gases.  Both diesel and CNG give off volatile
>gases, but since it's lighter than air they will vent off rather
>than collect in the hull.
>
>CNG marine vessels:
>http://www.brettandwolffllc.com/ngmvessels.html
>
>Cheers,
> Ian.
>
>-----Original Message-----
>>From: Brian Cox <ojaivalleybeefarm@dslextreme.com>
>>Sent: Jul 27, 2010 11:57 AM
>>To: "Personal_Submersibles@Psubs. Org" <personal_submersibles@psubs.org>
>>Subject: [PSUBS-MAILIST] CNG power for subs
>>
>>Hi All,   Hope everybody had a good time at the convention !   Congrats
>>Vance on your new aquisition !
>>
>>CNG for subs:
>>
>>The main objection to having a gasoline engine on a sub is the volatle gas
>>fumes.  I was thinking that it might be advantages to use Compressed Natural
>>Gas in a regular automotive engine (like a Chevy 350) or whatever would work
>>size wise in a psub.  There is a slight power reduction with CNG but not
>>much. Also the pressurized tank required would take up a bit more room than
>>diesel, but since it is pressurized it would function well at depth as far
>>as keeping seawater out.  Another added benifit would be the elimination of
>>any possible spills into the ocean environment.  If one went with a CNG
>>power it would give you a lot more options with types of engines,
>>compression ratios would have to be altered however.  You can find engines
>>from the factory designed for CNG otherwise you would need to retro-fit.
>>
>>Brian
>>
>>
>>
>>
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>
>
>
>
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>PSUBS.ORG
>PO Box 53
>Weare, NH  03281
>603-529-1100
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>The personal submersibles mailing list complies with the US Federal
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>603-529-1100
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