cannister desing

**jmurba** · 27th May 2007, 17:22

Quote: (Originally Posted by paulraymaekers)

hello, have you asked what price they ask

and you will still have to add a mesh, if not you will breath grains of sorb,

(also weight is an issue!)

paul

hi paul how did u design your cannister so that it provides the diver the better gas , ho did u test it ?

paulraymaekers · 27th May 2007, 17:28

Quote: (Originally Posted by jmurba)

hi paul how did u design your cannister so that it provides the diver the better gas , ho did u test it ?

euh,... think, design, fabricate, test, dive,.. think again, more thinking, drawings, fabricating, testing, diving, ..

paul

**jmurba** · 27th May 2007, 17:56

Quote: (Originally Posted by paulraymaekers)

euh,... think, design, fabricate, test, dive,.. think again, more thinking, drawings, fabricating, testing, diving, ..

paul

well it s not what I meant.... IMHO we can think as mutch as we want without a lab, a breathing machine, is not possible to test and then properly design a cannister.

we just can assume that a given shape, a given quantity of sorb, a given material will provide good results but how to be sure ?

I was looking for formulaes, examples, tests etc...

maybye will I copy the dimensions and internal shape of a cylinder shaped EC approuved re-breather, cause an EC re-breather has to be tested with a breathing machine.

like a buddy insp or an évolution.

anyway I am gonna read carefully the usn document mentionned in this thread.

regards

jean mi

paulraymaekers · 27th May 2007, 18:15

Quote: (Originally Posted by jmurba)

well it s not what I meant.... IMHO we can think as mutch as we want without a lab, a breathing machine, is not possible to test and then properly design a cannister.

we just can assume that a given shape, a given quantity of sorb, a given material will provide good results but how to be sure ?

I was looking for formulaes, examples, tests etc...

maybye will I copy the dimensions and internal shape of a cylinder shaped EC approuved re-breather, cause an EC re-breather has to be tested with a breathing machine.

like a buddy insp or an évolution.

anyway I am gonna read carefully the usn document mentionned in this thread.

regards

jean mi

testing pressure drop over a cannister is easy, even if you have no digital differential pressure gauge that gives up to 0.01 mbar (... but I have :-)

(you can do that with a U-formed transparant tube with water in it :-)

then diving the unit and seeing if the lab mesurements are confirmed in practice

comparing with other existing canisters is not difficult either..

diving canisters in crasy circomstances up to the end, and then rating the scrubber to only a fraction of that time... another way of testing

BUT!!! system behaviour does not only depend on the canister design, counterlungs, position of them, size of both... they all influence your canister efficiency!!!

paul

**jmurba** · 27th May 2007, 19:08

Quote: (Originally Posted by paulraymaekers)

diving canisters in crasy circomstances up to the end, and then rating the scrubber to only a fraction of that time... another way of testing

paul

I don't want to be the result of the test (((-:

27th May 2007, 17:22	#11 (permalink)
jmurba wet bear Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: May 2006 Location: cannes france Posts: 920	Re: cannister desing Quote: (Originally Posted by paulraymaekers) hello, have you asked what price they ask and you will still have to add a mesh, if not you will breath grains of sorb, (also weight is an issue!) paul hi paul how did u design your cannister so that it provides the diver the better gas , ho did u test it ? __________________ when will I be able to think about something else then spending hours underwater, when will I be normal ? http://web.mac.com/jmurba/Site_2/home.html http://web.mac.com/jmurba/Site_3/home.html
(Offline)

27th May 2007, 17:28	#12 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,638	Re: cannister desing Quote: (Originally Posted by jmurba) hi paul how did u design your cannister so that it provides the diver the better gas , ho did u test it ? euh,... think, design, fabricate, test, dive,.. think again, more thinking, drawings, fabricating, testing, diving, .. paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
(Offline)

27th May 2007, 17:56	#13 (permalink)
jmurba wet bear Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: May 2006 Location: cannes france Posts: 920	Re: cannister desing Quote: (Originally Posted by paulraymaekers) euh,... think, design, fabricate, test, dive,.. think again, more thinking, drawings, fabricating, testing, diving, .. paul well it s not what I meant.... IMHO we can think as mutch as we want without a lab, a breathing machine, is not possible to test and then properly design a cannister. we just can assume that a given shape, a given quantity of sorb, a given material will provide good results but how to be sure ? I was looking for formulaes, examples, tests etc... maybye will I copy the dimensions and internal shape of a cylinder shaped EC approuved re-breather, cause an EC re-breather has to be tested with a breathing machine. like a buddy insp or an évolution. anyway I am gonna read carefully the usn document mentionned in this thread. regards jean mi __________________ when will I be able to think about something else then spending hours underwater, when will I be normal ? http://web.mac.com/jmurba/Site_2/home.html http://web.mac.com/jmurba/Site_3/home.html
(Offline)

27th May 2007, 18:15	#14 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,638	Re: cannister desing Quote: (Originally Posted by jmurba) well it s not what I meant.... IMHO we can think as mutch as we want without a lab, a breathing machine, is not possible to test and then properly design a cannister. we just can assume that a given shape, a given quantity of sorb, a given material will provide good results but how to be sure ? I was looking for formulaes, examples, tests etc... maybye will I copy the dimensions and internal shape of a cylinder shaped EC approuved re-breather, cause an EC re-breather has to be tested with a breathing machine. like a buddy insp or an évolution. anyway I am gonna read carefully the usn document mentionned in this thread. regards jean mi testing pressure drop over a cannister is easy, even if you have no digital differential pressure gauge that gives up to 0.01 mbar (... but I have :-) (you can do that with a U-formed transparant tube with water in it :-) then diving the unit and seeing if the lab mesurements are confirmed in practice comparing with other existing canisters is not difficult either.. diving canisters in crasy circomstances up to the end, and then rating the scrubber to only a fraction of that time... another way of testing BUT!!! system behaviour does not only depend on the canister design, counterlungs, position of them, size of both... they all influence your canister efficiency!!! paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
(Offline)

27th May 2007, 19:08	#15 (permalink)
jmurba wet bear Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: May 2006 Location: cannes france Posts: 920	Re: cannister desing Quote: (Originally Posted by paulraymaekers) diving canisters in crasy circomstances up to the end, and then rating the scrubber to only a fraction of that time... another way of testing paul I don't want to be the result of the test (((-: __________________ when will I be able to think about something else then spending hours underwater, when will I be normal ? http://web.mac.com/jmurba/Site_2/home.html http://web.mac.com/jmurba/Site_3/home.html
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode