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<div dir="ltr" data-setdir="false">Hi Hugh, good to hear from you again. Just to clarify, I am not looking to design a scrubber from scratch, I'm looking to just copy someone else's successful design. It's one of those components that is hopefully ubiquitous enough between Kittredge style vessels that it would work in any of them, or put another way we should be able to document a scrubber design that WOULD work successfully in any Kittridge style vessel. I am just beginning to conceptualize about the scrubber and likely won't implement a specific design until June.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;">I do however value the idea of a parameter populated spreadsheet for design. Currently the only info I have to offer is 1-2 occupants (but likely only 1) and internal volume of approximately 49 cu ft empty (no equipment taking up volume). Dimensions, 36 x 72 inches not including the tank heads or conning tower. Cliff's R300 has less volume than a K-boat overall and a lot of his volume is consumed by batteries and other equipment, similarly to the Deep Workers. Ian's GAMMA on the other hand is slightly larger in volume than a K-boat so his scrubber, which is similar to the one that Alec built for SNOOPY, may work well for me.</span></span><br></div><div dir="ltr" data-setdir="false"><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div dir="ltr" data-setdir="false">Sounds like a good project, where do we start? Perhaps you and Cliff can lead us in this effort.</div><div dir="ltr" data-setdir="false"><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div dir="ltr" data-setdir="false"><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;">Jon</span></span></div><div dir="ltr" data-setdir="false"><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div dir="ltr" data-setdir="false"><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div><br></div>
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On Friday, March 22, 2024 at 06:35:49 PM EDT, via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div dir="ltr">Hi Cliff et al,<br></div><div dir="ltr">Many thanks for sharing your fan recommendation. I have googled Cliffs<br></div><div dir="ltr">blower and got the fan curve/data to compare it with mine. The one I<br></div><div dir="ltr">selected is about double the power and as it is a computer forward curve<br></div><div dir="ltr">blower it can go up to 1" of water gauge. Cliff's design appears to have<br></div><div dir="ltr">its best efficiency area around 1/4" water gauge with a max of about 1/2".<br></div><div dir="ltr">The one I have is for a 2 person sub but it is untested. What I mean is that<br></div><div dir="ltr">we do not know the performance of the soda lime bed. I had a good look at<br></div><div dir="ltr">the design of the late Phil Nuyten, before designing mine and learned a bit<br></div><div dir="ltr">from that. His design appears to be a short air travel of approx. 2-3"<br></div><div dir="ltr">depending on where to measure. What is the dwell time for yours, Cliff?<br></div><div dir="ltr"><br></div><div dir="ltr">I think that it is great that Jon is doing the design from scratch but in<br></div><div dir="ltr">order to do the project it would be great if we could do a spreadsheet for<br></div><div dir="ltr">comparison of the different designs. Cliff, as usual, has included the<br></div><div dir="ltr">obvious and in this case I would like to review mine in relation to the<br></div><div dir="ltr">amount of power used for the duration of the ABS required 72 hrs. I am<br></div><div dir="ltr">aiming for 96 hrs but happy for 72 hrs.<br></div><div dir="ltr"><br></div><div dir="ltr">Jon, where can we download/upload a spreadsheet and drawings / photos etc<br></div><div dir="ltr">to assist the project? One of the aspects is to determine what sphere size<br></div><div dir="ltr">is being used and then what resistance at various flow rates of air per sq<br></div><div dir="ltr">ft or per 100 mm square (100 sq cm) . I am proposing testing using a flow<br></div><div dir="ltr">meter of CO2 into a chamber and the maintainable CO2 level achieved. An<br></div><div dir="ltr">airtight box of 1-2 cu metres is a suggestion but ideally a tank of a known<br></div><div dir="ltr">volume. Somewhere there is a recommendation of how many air changes/hour is<br></div><div dir="ltr">best. I need to retrieve the data I used when designing mine but you guys<br></div><div dir="ltr">will be more current.<br></div><div dir="ltr">I am not a user of FB, Tiktok etc and try and confine my file transfer to<br></div><div dir="ltr">email attachments. Cheers, Hugh.<br></div><div dir="ltr"><br></div><div dir="ltr">---Original Message-----<br></div><div dir="ltr">From: Personal_Submersibles <<a href="mailto:personal_submersibles-bounces@psubs.org" rel="nofollow" target="_blank">personal_submersibles-bounces@psubs.org</a>> On<br></div><div dir="ltr">Behalf Of via Personal_Submersibles<br></div><div dir="ltr">Sent: Friday, March 22, 2024 1:56 AM<br></div><div dir="ltr">To: <a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a><br></div><div dir="ltr">Subject: Personal_Submersibles Digest, Vol 127, Issue 31<br></div><div dir="ltr"><br></div><div dir="ltr">Send Personal_Submersibles mailing list submissions to<br></div><div dir="ltr"> <a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a><br></div><div dir="ltr"><br></div><div dir="ltr">To subscribe or unsubscribe via the World Wide Web, visit<br></div><div dir="ltr"> <a href="http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr">or, via email, send a message with subject or body 'help' to<br></div><div dir="ltr"> <a href="mailto:personal_submersibles-request@psubs.org" rel="nofollow" target="_blank">personal_submersibles-request@psubs.org</a><br></div><div dir="ltr"><br></div><div dir="ltr">You can reach the person managing the list at<br></div><div dir="ltr"> <a href="mailto:personal_submersibles-owner@psubs.org" rel="nofollow" target="_blank">personal_submersibles-owner@psubs.org</a><br></div><div dir="ltr"><br></div><div dir="ltr">When replying, please edit your Subject line so it is more specific than<br></div><div dir="ltr">"Re: Contents of Personal_Submersibles digest..."<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Today's Topics:<br></div><div dir="ltr"><br></div><div dir="ltr"> 1. Re: CO2 scrubber BOM or documentation (via Personal_Submersibles)<br></div><div dir="ltr"> 2. Re: CO2 scrubber BOM or documentation<br></div><div dir="ltr"> (Cliff Redus via Personal_Submersibles)<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">----------------------------------------------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Message: 1<br></div><div dir="ltr">Date: Thu, 21 Mar 2024 11:02:09 +0100<br></div><div dir="ltr">From: via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br></div><div dir="ltr">To: "'Personal Submersibles General Discussion'"<br></div><div dir="ltr"> <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br></div><div dir="ltr">Subject: Re: [PSUBS-MAILIST] CO2 scrubber BOM or documentation<br></div><div dir="ltr">Message-ID: <026501da7b76$d67f5f40$837e1dc0$@airesearch.nl><br></div><div dir="ltr">Content-Type: text/plain; charset="utf-8"<br></div><div dir="ltr"><br></div><div dir="ltr">Hi Cliff, <br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">It is a Radial blower right? These ones create a higher pressure than axial<br></div><div dir="ltr">blowers. <br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">Br, Emile<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">Van: Personal_Submersibles <<a href="mailto:personal_submersibles-bounces@psubs.org" rel="nofollow" target="_blank">personal_submersibles-bounces@psubs.org</a>> Namens<br></div><div dir="ltr">Cliff Redus via Personal_Submersibles<br></div><div dir="ltr">Verzonden: donderdag 21 maart 2024 00:17<br></div><div dir="ltr">Aan: Jon Wallace via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br></div><div dir="ltr">Onderwerp: Re: [PSUBS-MAILIST] CO2 scrubber BOM or documentation<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">Jon, see the attached drawing of the scrubber I will be using on the R400.<br></div><div dir="ltr">It is essentially the same configuration I use on the R300. I have had good<br></div><div dir="ltr">luck with the Rapst RL90-18/24 Fan Blower. These come up on eBay often.<br></div><div dir="ltr">You can get this used on eBay for $39 now. These are good German-engineered<br></div><div dir="ltr">blowers that seem to strike a balance between adequate head, and not to much<br></div><div dir="ltr">current draw so that you can meet the 72-hour ABS rule and they are quiet.<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">System Papst RL90-18/24 Chassis Fan Blower | eBay<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">Cliff<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">On Wednesday, March 20, 2024 at 01:21:01 PM CDT, Jon Wallace via<br></div><div dir="ltr">Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a><br></div><div dir="ltr"><mailto:personal_submersibles@psubs.org> > wrote: <br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">Hey guys, I'm in the initial thought processes of CO2 scrubber design and<br></div><div dir="ltr">really don't want to reinvent the wheel on this component. Are any of you<br></div><div dir="ltr">willing to share some details on your design? I know Alec submitted a 3D<br></div><div dir="ltr">printer design which we have on the website however I don't have access to a<br></div><div dir="ltr">3D printer and frankly even though I've spent 40+ years in software<br></div><div dir="ltr">development and can modify a UNIX kernel, my CAD skills are pretty much<br></div><div dir="ltr">non-existent.<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">For this component I'd really like something that can be built with as many<br></div><div dir="ltr">off the shelf parts as possible. Any suggestions?<br></div><div dir="ltr"><br></div><div dir="ltr"> <br></div><div dir="ltr"><br></div><div dir="ltr">Jon<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a> <mailto:Personal_Submersibles@psubs.org><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr"><br></div><div dir="ltr">-------------- next part --------------<br></div><div dir="ltr">An HTML attachment was scrubbed...<br></div><div dir="ltr">URL:<br></div><div dir="ltr"><<a href="http://www.whoweb.com/pipermail/personal_submersibles/attachments/20240321/" rel="nofollow" target="_blank">http://www.whoweb.com/pipermail/personal_submersibles/attachments/20240321/</a><br></div><div dir="ltr">34be80ce/attachment-0001.html><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Message: 2<br></div><div dir="ltr">Date: Thu, 21 Mar 2024 12:55:47 +0000 (UTC)<br></div><div dir="ltr">From: Cliff Redus via Personal_Submersibles<br></div><div dir="ltr"> <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br></div><div dir="ltr">To: via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br></div><div dir="ltr">Subject: Re: [PSUBS-MAILIST] CO2 scrubber BOM or documentation<br></div><div dir="ltr">Message-ID: <<a href="mailto:1307222564.7713199.1711025747944@mail.yahoo.com" rel="nofollow" target="_blank">1307222564.7713199.1711025747944@mail.yahoo.com</a>><br></div><div dir="ltr">Content-Type: text/plain; charset="utf-8"<br></div><div dir="ltr"><br></div><div dir="ltr"> Yes Emile, this is a radial blower. The direction of flow in axial intake<br></div><div dir="ltr">but radial centrifugal exhaust.??Some people refer to these as squirrel gage<br></div><div dir="ltr">blowers.?I was looking at my files and can't put my fingers on the datasheet<br></div><div dir="ltr">for this blower but see Papst RL90-18/14N which is a newer version of this<br></div><div dir="ltr">blower.??https://www.onlinecomponents.com/en/datasheet/rl901814n-12103307/<br></div><div dir="ltr">Cliff<br></div><div dir="ltr"><br></div><div dir="ltr"> On Thursday, March 21, 2024 at 05:02:51 AM CDT, via<br></div><div dir="ltr">Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>> wrote: <br></div><div dir="ltr"> <br></div><div dir="ltr"> <br></div><div dir="ltr">Hi Cliff, <br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">It is a Radial blower right? These ones create a higher pressure than axial<br></div><div dir="ltr">blowers. <br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">Br, Emile<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">Van: Personal_Submersibles <<a href="mailto:personal_submersibles-bounces@psubs.org" rel="nofollow" target="_blank">personal_submersibles-bounces@psubs.org</a>> Namens<br></div><div dir="ltr">Cliff Redus via Personal_Submersibles<br></div><div dir="ltr">Verzonden: donderdag 21 maart 2024 00:17<br></div><div dir="ltr">Aan: Jon Wallace via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br></div><div dir="ltr">Onderwerp: Re: [PSUBS-MAILIST] CO2 scrubber BOM or documentation<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">Jon, see the attached drawing of the scrubber I will be using on the R400.<br></div><div dir="ltr">It is essentially the same configuration I use on the R300.? I have had good<br></div><div dir="ltr">luck with the Rapst RL90-18/24 Fan Blower.? These come up on eBay often.?<br></div><div dir="ltr">You can get this used on eBay for $39 now.? These are good German-engineered<br></div><div dir="ltr">blowers that seem to strike a balance between adequate head, and not to much<br></div><div dir="ltr">current draw so that you can meet the 72-hour ABS rule and they are quiet.<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">System Papst RL90-18/24 Chassis Fan Blower | eBay<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">Cliff<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">On Wednesday, March 20, 2024 at 01:21:01 PM CDT, Jon Wallace via<br></div><div dir="ltr">Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>> wrote: <br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">Hey guys, I'm in the initial thought processes of CO2 scrubber design and<br></div><div dir="ltr">really don't want to reinvent the wheel on this component.? Are any of you<br></div><div dir="ltr">willing to share some details on your design?? I know Alec submitted a 3D<br></div><div dir="ltr">printer design which we have on the website however I don't have access to a<br></div><div dir="ltr">3D printer and frankly even though I've spent 40+ years in software<br></div><div dir="ltr">development and can modify a UNIX kernel, my CAD skills are pretty much<br></div><div dir="ltr">non-existent.<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">For this component I'd really like something that can be built with as many<br></div><div dir="ltr">off the shelf parts as possible.? Any suggestions?<br></div><div dir="ltr"><br></div><div dir="ltr"> ?<br></div><div dir="ltr"><br></div><div dir="ltr">Jon<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr"> <br></div><div dir="ltr">-------------- next part --------------<br></div><div dir="ltr">An HTML attachment was scrubbed...<br></div><div dir="ltr">URL:<br></div><div dir="ltr"><<a href="http://www.whoweb.com/pipermail/personal_submersibles/attachments/20240321/" rel="nofollow" target="_blank">http://www.whoweb.com/pipermail/personal_submersibles/attachments/20240321/</a><br></div><div dir="ltr">a1eec5b8/attachment.html><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Subject: Digest Footer<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles</a><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">End of Personal_Submersibles Digest, Vol 127, Issue 31<br></div><div dir="ltr">******************************************************<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div></div>
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