|
Øystein, There is a difference between sat diving and tech diving at depth with
rebreathers. As you note, sat diving is VERY equipment intensive...many orders
of magnitude over tech diving (which uses a lot of equipment by itself).
Drysuits negate the need for a hot water system and suit and argon extends the
exposure time in cold water with a dry suit by increasing the insulation
effectiveness by about 50% over air (and about 300% over HeOX…can’t
remember the exact number but you get the idea). The argon is not breathed
just used for insulation augmentation in the suit. While the Norwegian
government may have banned argon insulation for their oil patches, it is utilized
around the world by various navies and tech divers. An even more effective
insulation augmentation gas is sulfur hexafluoride, a denser gas with about 4x
the effectiveness of air. In the early 90s, developed a suit, insulation package, and a tie-in to
a small additional outside heat source that circulated warm water through a
tube suit next to the skin similar to what the astronauts use for SEAL SDV
members so that they could survive 12 hour exposures in Arctic waters. Also
worked on parts of the associated 12-hr. mixed gas rebreather. Carsten’s method of mixed-gas rebreathers, drysuits, and argon is
the ideal package size for use with his submersible. It will be great to see
some of the finds that he makes with this system. R/Jay -----Original Message----- Yes, this is true if you wanna go sat diving on your own. But you will never be able to reach the criteria for diving in for example the north sea for the Norwegian gouverment or any of the oilcompanies up here. Argon in dry suits has been tested and found not approved years ago. When diving on trimix the gas is reclaimed, treated and heated befor it goes back to the divers. Actually the system these days are much more complicated then back in the 70. The biggest problemsduring sat diving is loss of hot water. Because of the Helium you breath you can risk freeze to death long time before you can get rescued if the sumarine looses its power. On 2/14/07, MerlinSub@t-online.de <MerlinSub@t-online.de> wrote: > I dont agree.. That's was true in the 70ies. > > Euronaut will fit for saturation diving. But without diver ropes
and pipes. > No hot water for the divers suit. > With a new type of double-rebreather. And Argon in the suits.
Undepentadly from the submarine-system. And that makes the remaining system
inside the sub pretty small. > > :-o Regards Carsten > > > "Øystein Skarholm" <skarholm@gmail.com> schrieb: > > A complete system for sat diving is a pretty large system.
And again > > if you thinking commercial then a submarine can no longer
compete > > against a surface vessel. The number of crew during sat
diving is > > large. And all of the requirements for backup and rescue is > > tremendous. > > > > > >
************************************************************************ > ************************************************************************ >
************************************************************************ > The personal submersibles mailing list complies with the US
Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive
messages > from our organization. > > If you want to be removed from this mailing list simply click on
the > link below or send a blank email message to: > removeme- > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > > 603-529-1100 >
************************************************************************ >
************************************************************************ >
************************************************************************ > > -- Best Regards Øystein Skarholm www.ubat.no ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme- Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************ |