[PSUBS-MAILIST] CO2 Sorb

Tue Aug 16 19:13:48 EDT 2016

Thanks Hank,
unfortunately Scott would need a big escape pod for all the crew.
If he had a fly out rov he could use it for gaining video footage of
his dives. I think Scotts submarine hobby is getting out of hand. lol.
Happy Birthday for the other day Scott.
Alan

Sent from my iPad

> On 17/08/2016, at 10:47 am, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
> There is a solution for rescue at 1,000 feet,, escape pod :-)   I think the DW has enough absorbent between the two scrubbers for 36 hr plus they always dive with a second DW on deck.  They throw all the absorbent away after every dive I am told.  
> Hank
> 
> 
> On Tuesday, August 16, 2016 4:42 PM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Does anyone know much about the Deep Worker scrubbers?
> The new ones aren't cylindrical, they are an oblong shape that fits the contour
> of the subs hull either side of your legs. There are 2 of them with fans on the front. 
> I cant see how you would change out the absorbent during a dive as there would 
> not be much room when you are in there. Or do they hold the full amount in both of them.
> If this is so, I presume they run one at a time, so is the redundant scrubber sealed
> in any way prior to use?
> Alan  
> 
> Sent from my iPad
> 
>> On 17/08/2016, at 10:12 am, Scott Waters via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
> 
> 
> This is for Pisces VI. With rescue missions easily taking 2 to 3 days to assymble, I wanted the extra allowance. There is enough space in the cockpit to handle the extra sorb. On Trustworthy, it is a different story. Lol
> 
> Thank you,
> Scott Waters
> 
> 
> 
> Sent from my U.S. Cellular® Smartphone
> 
> 
> -------- Original message --------
> From: Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> 
> Date: 08/16/2016 5:03 PM (GMT-06:00) 
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
> Subject: Re: [PSUBS-MAILIST] CO2 Sorb 
> 
> I'm not sure how you're doing with your weight budget, but the Sodasorb weight really can become a space and weight issue when smaller boats go for compliance with the 72 hour rule. I know there's a competing product that's something like a pre-impregnated fabric instead of granules. Sorry, I can't recall the brand name. But it would be interesting to compare the weight and volume implications.
> 
> 
> Thanks,
> 
> Alec
> 
> On Tue, Aug 16, 2016 at 3:54 PM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> Thanks Cliff. I was also running the numbers on Pisces VI. We will have the following for 1 pilot and 3 observers for a 8 hour mission time and 5 day emergency use
> *400 cuft O2 outside hull emergency use (five 80cuft tanks)
> *160-81 cuft O2 inside hull for up to 8hr mission use (two 80cuft bottles allowing for full discharge)
> *144 lbs sodasorb emergency use (three 48lb jugs)
> *12 lbs sodasorb for up to 8hr mission use (two scrubbers loaded)
> 
> Thank you,
> Scott Waters
> 
> >  -------Original Message-------
> >  From: Cliff Redus via Personal_Submersibles <personal_submersibles at psubs. org>
> >  To: Personal Submersibles General Discussion <personal_submersibles at psubs. org>
> >  Subject: Re: [PSUBS-MAILIST] CO2 Sorb
> >  Sent: Aug 16 '16 14:14
> >
> >  Scott, ABS  uses  a value of 0.115 lbm CO2  generated per hour per
> >  occupant.  Sotasorb HP specification says it can absorb 41% CO2 by
> >  weight.  This comes out to 3.56 Persons-hours per pound of SodaSorb HP
> >  which is close the number Alec posted.  ABS rules call for full life
> >  support for 72 hours plus normal duty time.  If you assume normal duty
> >  time is 8 hours, then the life support system would need to last for
> >  80 hours.  For one person this would give 22.5 lbs of SodaSorbHP and
> >  for two, 45 lbs for this duration.
> >
> >  Actual consumption rate is dependent on a lot of parameters, such as
> >  temperature, humidly, mass of occupants and design of scrubber to
> >  mention just a few.
> >
> >  Cliff
> >
> >  On Tue, Aug 16, 2016 at 11:02 AM, via Personal_Submersibles
> >  <personal_submersibles at psubs. org> wrote:
> >
> >  > Hey guys, Just doing a safety check. What is the rough amount of CO2
> >  > sorb that is needed per occupant per day (normally measured in
> >  > weight)? I have a 48lb jug in Trustworthy which I know is enough for
> >  > 2 people for 3 days. I am just planning on putting it in premeasured
> >  > sealed bags for better storage and was wondering about how much does
> >  > it actually take.
> >  >
> >  > Thank you,
> >  > Scott Waters
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