Cryogenic rebreather

Dremer · 8th January 2006, 07:13

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

divetheworld · 8th January 2006, 09:52

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?

***Louby Lou*** · 8th January 2006, 10:09

Nick uk. · 8th January 2006, 10:21

Yeah MAN'

there all the rage here in Italy!!

Give it time and you'll all want one.

Rock on.

Janwillem Bech · 8th January 2006, 11:51

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

iain-hsm · 8th January 2006, 17:14

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.

E-man · 8th January 2006, 17:17

Interesting...Sounds cold to breathe off of.

***caveseeker7*** · 8th January 2006, 19:32

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.

Dremer · 8th January 2006, 19:50

It seems to be science fiction !

8th January 2006, 07:13	#1 (permalink)
Dremer New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Dec 2005 Location: Italia Posts: 21	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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8th January 2006, 09:52	#2 (permalink)
divetheworld Dive porn pimp Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Classic Kiss Other CCR Join Date: Mar 2005 Location: Leeds, England Posts: 1,537	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? __________________ Self praise is no reccomendation. Dont try to be a great man, just be a man and let history be the judge of you. CHECK OUT OUR INTERWEBS FOR CUSTOM REBREATHER UPGRADES *WWW.NARKEDAT90.CO.UK* *http://www.grpservices.com/pursuit/* Supporting Shearwater Research Products in Europe
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8th January 2006, 10:09	#3 (permalink)
*Louby Lou* Let Me At 'Em! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Roman Corinium! Posts: 1,023	Re: Cryogenic rebreather __________________ Miss Lou x Use of Rebreather World is subject to the Rebreatherworld Terms and Conditions - Please read! Outlaw Divers - Sssh we're diving! You heff vays uff dealink vis zem, oh Miss Rebreather World Admin! - Rob Davie Feb 06 Last edited by Louby Lou : 8th January 2006 at 10:12.
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8th January 2006, 10:21	#4 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 579	Re: Cryogenic rebreather Yeah MAN' there all the rage here in Italy!! Give it time and you'll all want one. Rock on. __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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8th January 2006, 11:51	#5 (permalink)
Janwillem Bech New Member Current Rebreather/s: Inspiration Classic Other CCR Other SCR Other Rebreather/s: Other CCR Other SCR Join Date: Feb 2005 Location: Netherlands Posts: 89	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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8th January 2006, 17:14	#6 (permalink)
iain-hsm Custom Title Allowed! Current Rebreather/s: MK 15.X Other CCR Other SCR Other Rebreather/s: Other CCR Other SCR Join Date: Mar 2005 Location: Loughborough England uk Posts: 346	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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8th January 2006, 17:17	#7 (permalink)
E-man On the loop! Current Rebreather/s: Inspiration Classic Optima Other Rebreather/s: Titan Join Date: Sep 2005 Location: Eastern Coast ;) Posts: 212	Re: Cryogenic rebreather Interesting...Sounds cold to breathe off of.
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8th January 2006, 19:50	#9 (permalink)
Dremer New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Dec 2005 Location: Italia Posts: 21	Re: Cryogenic rebreather It seems to be science fiction !
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