[PSUBS-MAILIST] Diesel Exhaust

[James Frankland]

Hi Greg\All,

Does anyone have any more info on Georges diesel subs?  I have his book and
i dont recall any mention of them, though i could be mistaken, its a while
since i read it.  I'd just be interested to see more info.  Were they K
type designs?  Or something else?
Thanks
james

On 11 October 2013 13:03, greg cottrell <jgcottrell2002 at yahoo.com> wrote:

>   Captain Kittredge built a couple of diesel subs that worked very well.
> In his design, exhaust went straight down into the water at the bottom of
> the hull. The exhaust exit was directly behind what looked like a "v"
> shaped steel skeg that created a low pressure area when the sub was
> moving forward. The low pressure area reduced back pressure on the exhaust.
>
> Incidentally, one of George's customers bought a diesel sub from him but
> took it down one time without closing the exhaust valve. Water entered one
> of the cylinders in the diesel and bent either the crank or the rods when
> he tried to start the engine.
>
> Greg
>
>
>
>   *From:* Marc de Piolenc <piolenc at archivale.com>
> *To:* personal_submersibles at psubs.org
> *Sent:* Thursday, October 10, 2013 10:15 PM
> *Subject:* Re: [PSUBS-MAILIST] Dive report - Pickles Reef
>
> I've been following this discussion with great interest. I don't
> have a
> sub yet, but I do live in the Tropics, and as there's no cold
> current
> handy to where I live any subbing I do will be in water pretty near air
> temperature. As you might expect, I've given this problem a lot of
> thought.
>
> My tentative conclusion is that, if I build a sub, I will have to make
> it more autonomous than is the rule on this list. Specifically, it will
> need a combustion engine to ferry itself on the surface to dive sites,
> and to maintain comfort and keep the battery topped off for diving while
> doing so. I started with the assumption that I would need an air
> conditioning unit running off a small industrial diesel, but then I
> realized that, if I use a snorkel exhausting into the cabin, and have
> the diesel draw air from the cabin, I get continuous renewal of the air
> in the cabin without the cost, power burden and safety problems of
> running a Rankine cycle refrigeration system. That's the solution
> that
> I've retained for the moment. Of course I also need a secure means
> of
> preventing exhaust gas from being aspirated into the snorkel (I can't
>
> quite understand how naval submarines manage to combine both functions
> in one mast), but that might be as simple as having the diesel exhaust
> flush with the hull, with some arrangement to prevent water from coming
> in. Since the diesel would only be used on the surface, and the snort
> would only be there to allow a low-freeboard hatch to be kept closed,
> the power penalty would be minimal.
>
> Fuel storage, fuel feed and the like still have to be worked out. Naval
> submarines have very complex arrangements for this, and that complexity
> must be tolerated for a good reason. Even so, I need a simpler way to do
> it that still protects the fuel from contamination and me from
> asphyxiation.
>
> Marc de Piolenc
>
> On 10/11/2013 1:45 AM, Land N Sea wrote:
> > I have been out of the loop for 5 weeks on the mainland on my sailboat
> > and I should of read all the emails before responding when I got back. I
> > did view the great footage and noticed that my tower looked a little
> > taller (good for water ingress) and of course doesn’t have the dome so I
> > hopefully won’t have quite as bad of a heat problem as one with the dome
> > but I was thinking about Emile’s clear acrylic fairing as an option when
> > I heard about the water egress problems with a three foot chop.
> > It does get pretty hot here and we are about the same latitude as
> > Florida so I will probably be trying Phil’s idea of the frozen pouches
> > vest and or the gallon of frozen water and have the air coming out of my
> > scrubber blowing against it.
> --
> Archivale catalog: http://www.archivale.com/catalog
> Polymath weblog: http://www.archivale.com/weblog
> Translations (ProZ profile): http://www.proz.com/profile/639380
> Translations (BeWords profile): http://www.bewords.com/Marc-dePiolenc
> Ducted fans: http://massflow.archivale.com/
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20131011/0c77bc3d/attachment.html>